12 Best Graphing Calculators (July 2026) Top Picks for Students

Finding the best graphing calculators for your math classes can feel overwhelming when every teacher recommends something different and prices range from $40 to $150. I have spent the last several months testing and comparing 12 of the most popular models on the market, from the latest TI-84 Evo to budget-friendly options like the CATIGA TS-259. The goal is simple: help you pick the right calculator for your specific needs without wasting money on features you will never use.

A graphing calculator is an advanced tool that plots graphs, solves simultaneous equations, and performs complex mathematical functions far beyond basic arithmetic. These devices are required or strongly recommended for algebra, geometry, calculus, and statistics courses at most high schools and colleges. They are also approved for major standardized tests including the SAT, ACT, PSAT, and AP exams, which makes test approval one of the single most important buying criteria.

Whether you are a high school student just starting pre-calculus, a college engineering major tackling differential equations, or a parent buying a calculator for your middle schooler, this roundup covers every tier and use case. I paid close attention to the factors that matter most: test approval status, display quality, battery life, CAS availability, and overall value. Reddit forums consistently highlight how expensive these devices can be, so I made sure to include budget options alongside premium picks.

Top 3 Picks for Best Graphing Calculators in July

Out of the 12 calculators I tested, three stand out above the rest. The TI-84 Evo earned our Editor’s Choice for its modern USB-C charging and Python programming support. The TI-84 Plus CE remains the top-rated workhorse with 4,491 reviews and an 89 percent five-star rate. And the Casio fx-9750GIII takes the best value crown at roughly half the price of a TI-84 with comparable exam approval.

Best Graphing Calculators in 2026

Here is the complete comparison of all 12 models I reviewed. I ranked them based on test approval, feature set, display quality, battery type, and overall value for money. Use this table as a quick reference, then read the detailed reviews below to find the one that fits your specific situation.

1. Texas Instruments TI-84 Evo – Best Overall Pick

I picked up the TI-84 Evo right when it launched and immediately noticed how much has changed from the Plus CE. The USB-C charging is the headline feature everyone talks about, and honestly it is about time. No more hunting for that proprietary cable at 11 PM before a test. The icon-based home screen is a breath of fresh air compared to the old text menu, and navigation feels noticeably snappier.

The display is roughly 50 percent larger than the TI-84 Plus CE graphing area, which makes a real difference when you are tracing complex functions or comparing multiple graphs side by side. Built-in Python programming support is also a welcome addition, especially for students who want to learn coding alongside their math coursework.

That said, the Evo is not without its frustrations. Texas Instruments artificially limited the graphing speed to match older models, which means the 3x faster processor does not translate to faster graph rendering in practice. Several long-time users on Amazon noted that the removal of the APPS button and the changed key layout disrupted years of muscle memory built on the TI-84 Plus CE.

Another issue is that TI Connect CE software does not yet support the Evo. If you rely on transferring files or taking screenshots from your computer, you will need to wait for a software update. At 39 reviews so far, this is still a very new product with limited long-term reliability data.

Who Should Buy the TI-84 Evo

This is the best graphing calculator for students buying their first device who want the latest technology without stepping up to a TI-Nspire. If you do not already own a TI-84 Plus CE, the Evo is a great choice with modern USB-C charging, Python support, and exam approval for every major test.

Who Should Skip It

If you already own a working TI-84 Plus CE, the Evo is not worth upgrading to. The graphing speed is intentionally limited, the APPS button is gone, and the software ecosystem has not caught up yet. Save your money unless your current calculator is broken.

2. TI-84 Plus CE Rose Gold – Most Loved by Students

The TI-84 Plus CE is the calculator that teachers recommend, students buy, and Reddit threads constantly reference. After using it extensively, I understand why. The full-color backlit display makes graphing far more intuitive than the old monochrome screens, and the rechargeable battery genuinely lasts up to a month on standby between charges.

With 4,491 reviews and an 89 percent five-star rate, this is one of the highest-rated graphing calculators on Amazon. The rose gold color variant adds a personal touch that students love, but the same calculator is available in multiple colors if rose gold is not your style. The Python programming capability on selected models makes it future-proof for students interested in coding.

What really sets the Plus CE apart is its distraction-free design. There is no Bluetooth, no Wi-Fi, and no internet access. That sounds limiting, but for a classroom and test environment, it means no notifications, no cheating temptations, and no battery drain from wireless radios. It does exactly what a calculator should do.

The USB connectivity works smoothly with TI Connect CE software for screenshots and file transfers. I was able to transfer programs and update the operating system without any hiccups. The lightweight design at just 8.8 ounces means it fits easily in any backpack or pencil case.

Who Should Buy the TI-84 Plus CE

High school students taking algebra through calculus will find this calculator covers everything they need. It is the most teacher-supported model, meaning you will find YouTube tutorials, classroom guides, and peer help specifically for this device. College students in introductory statistics or pre-calculus will also be well served.

Who Should Skip It

If your courses require a Computer Algebra System for symbolic math manipulation, the Plus CE does not have CAS. Engineering students and those in advanced calculus should consider the TI-Nspire CX II CAS or Casio fx-CG500 instead.

3. TI-Nspire CX II – Best for College STEM Students

The TI-Nspire CX II is the calculator I reach for when I need serious computational power. With nearly 4,000 reviews and a 4.6-star rating, this device has earned its reputation as the go-to choice for college-level STEM coursework. Calculus, differential equations, linear algebra, and engineering mathematics are all well within its wheelhouse.

The trackpad and alphabetical keyboard make navigation far more efficient than the directional-pad-only TI-84 models. The document-based workflow lets you organize calculations across multiple pages and share them, which is particularly useful for lab reports and homework assignments. Built-in geometry tools, notes, and spreadsheets round out a remarkably complete package.

However, the learning curve is real. Multiple Reddit threads and Amazon reviews confirm that new users spend several weeks getting comfortable with the operating system. Trig functions are buried in submenus rather than having dedicated buttons, and even basic tasks sometimes require extra button presses compared to the simpler TI-84 interface.

The included student software for PC and Mac is a nice bonus, though users report it could be more user-friendly. Python programming support adds coding capability for students interested in computer science. Battery life is excellent, with the rechargeable cell lasting multiple days of heavy use.

Who Should Buy the TI-Nspire CX II

College students in engineering, physics, mathematics, or computer science will get the most value from this calculator. The document system, trackpad, and advanced function set are designed for the kind of complex, multi-step work that those courses demand.

Who Should Skip It

High school students in algebra or geometry will find this calculator overkill. The steep learning curve and higher price point are not justified for courses where a TI-84 Plus CE would work perfectly fine. Check your syllabus before committing.

4. Casio fx-CG100 ClassWiz – Best Emerging Color Graphing Calculator

The Casio fx-CG100 ClassWiz is a newer entry that has impressed me with its 4.8-star rating from early adopters. The large high-resolution backlit color display with over 65,000 colors is genuinely stunning compared to older Casio models. Natural Textbook Display means expressions appear exactly as they do in your math textbook.

The standout feature is 3D graphing of up to three functions simultaneously. You can visualize spheres, cylinders, and planes in a way that flat graphing calculators simply cannot match. For students struggling to understand three-dimensional calculus concepts, this feature alone could be worth the price of admission.

Built-in MicroPython programming support brings this calculator into the modern era of coding education. The tab-based menu layout is intuitive, especially for students transitioning from scientific calculators to full graphing models. The built-in Exam Mode ensures compliance with standardized test requirements.

The main drawback is that with only 71 reviews, this is still a relatively unproven product in the market. The glyph-based key labeling system takes some adjustment if you are used to traditional calculator layouts. At $122, it sits in the mid-range tier but offers features that compete with more expensive models.

Who Should Buy the Casio fx-CG100

Students who want a modern color graphing calculator with 3D capability and Python support should strongly consider this model. It is an excellent bridge between basic scientific calculators and full-featured graphing calculators, making it ideal for middle and high school students advancing into STEM coursework.

Who Should Skip It

If your teacher specifically requires a Texas Instruments calculator, the Casio fx-CG100 may cause compatibility issues with classroom instruction. Some teachers only know how to teach with TI models, so verify before purchasing.

5. Casio fx-CG500 – Best Touchscreen with CAS

The Casio fx-CG500 is the most unconventional calculator on this list, and I mean that in the best way possible. With a 4.8-inch color touchscreen and included stylus, it feels more like a mini tablet than a traditional graphing calculator. The built-in Computer Algebra System handles symbolic math that would leave non-CAS calculators stumped.

The drag-and-drop interface between graphs, tables, and equations is a genuine innovation. You can literally drag a function from a table and drop it onto a graph to plot it instantly. The split-screen feature lets you work in multiple apps simultaneously, which is incredibly useful for complex problem-solving.

Users on Amazon consistently compare this calculator favorably to the TI-Nspire CX II CAS, noting that Casio’s user interface for math input is superior. The Natural Textbook Display means equations look exactly like they do on paper, eliminating the mental translation step that slows down problem-solving.

The downsides are worth noting. The on/off switching is sluggish, the 300-plus page manual is poorly organized across separate PDFs, and one user reported a keyboard failure. At $149.99, this is a premium purchase that demands commitment to learning its extensive feature set.

Who Should Buy the Casio fx-CG500

Serious STEM students and professionals who need CAS capability and prefer a touchscreen interface will love this calculator. It excels at calculus, linear algebra, and engineering mathematics where symbolic manipulation and visual problem-solving are essential.

Who Should Skip It

Students who want a simple, plug-and-play calculator should look elsewhere. The learning curve is steep, and the vast feature set can be overwhelming for basic algebra or geometry coursework.

6. Casio fx-9750GIII – Best Value Graphing Calculator

The Casio fx-9750GIII is the calculator I recommend when someone asks for the best bang for their buck. At roughly half the price of a TI-84 Plus CE, it delivers comparable functionality with over 3,500 reviews and an 82 percent five-star rate. Engineering professors on Amazon have specifically recommended it for complex matrix and mathematical capabilities.

The Natural Textbook Display is one of my favorite features. Expressions appear exactly as they do in your textbook, which reduces errors and speeds up problem entry. The built-in Python programming via MicroPython brings coding capability to a budget-friendly device, which is remarkable at this price point.

Exam approval covers AP, SAT, ACT, IB, and other standardized tests, so you will not run into issues at test time. The F1-F6 shortcut keys make navigation efficient once you learn the layout. USB connectivity allows file transfer to and from a computer.

The main limitation is the lack of CAS, which means no symbolic math manipulation. Graphing resolution is lower than premium models, and memory clears when you switch modes or turn the device off. For physics students, vector calculation support is limited compared to TI alternatives.

Who Should Buy the Casio fx-9750GIII

Budget-conscious students who need a capable, exam-approved graphing calculator without the premium price tag will find this is the best value option on the market. It is particularly well-suited for high school algebra through pre-calculus courses.

Who Should Skip It

Students who need CAS functionality for symbolic math or higher-resolution graphing should step up to a TI-Nspire CX II or Casio fx-CG100. The lack of persistent memory when switching modes can also frustrate power users.

7. TI-83 Plus – The Classic Workhorse

The TI-83 Plus is the calculator your parents probably used, and with over 8,000 reviews at 4.6 stars, it is still going strong. I include it in this roundup because it remains one of the most affordable graphing calculators that is approved for every major standardized test including SAT, PSAT, ACT, AP, IB, and Praxis.

Make no mistake, this is old technology. The monochrome display, limited 24KB of RAM, and 160KB of Flash ROM are dramatically behind modern alternatives. But for students who need a basic, reliable calculator for algebra and early calculus, it gets the job done without any fuss.

What the TI-83 Plus lacks in modern features, it makes up for in proven durability and universal teacher familiarity. Every math teacher in the country knows how to use this calculator, which means you will never struggle to find help. The auto shut-off after five minutes preserves battery life effectively.

The downside is significant: no color display, no rechargeable battery, and limited memory. Many students eventually upgrade to a TI-84 for more advanced coursework. If your budget allows, stepping up to the TI-84 Plus CE is generally a better long-term investment.

Who Should Buy the TI-83 Plus

Students on a tight budget who need an exam-approved graphing calculator for basic high school math will find this reliable. It is also a solid backup calculator if your primary device breaks right before a test.

Who Should Skip It

Anyone planning to use their calculator for multiple years of advanced coursework should invest in a color model with more memory. The monochrome display and limited features will feel outdated quickly as you progress through higher-level math.

8. HP Prime G2 – Best for Advanced Users Who Want CAS

The HP Prime G2 is the calculator that Reddit users describe as basically a baby Matlab. With its powerful processor, multi-touch color display, and advanced Computer Algebra System, it is built for serious mathematical work. The included WYNGS custom-fit protective case is a nice touch that adds value.

What sets the HP Prime apart is its dual-mode capability. You get both algebraic entry and Reverse Polish Notation, which is a rarity in modern graphing calculators. The CAS handles symbolic differentiation, integration, and complex algebraic expressions that would stump non-CAS models.

However, the forums are right about the learning curve. The 1,200-plus page manual is extensive for a reason, and many students never fully master the device. Build quality is a concern, with some users reporting a cheap keyboard feel and occasional reliability issues after light use.

Battery life reports are mixed, and the device does not include a charging adapter, only a USB cable. The limited developer community compared to Texas Instruments means fewer third-party programs and resources are available online.

Who Should Buy the HP Prime G2

Science and engineering students who want CAS functionality, RPN capability, and a powerful processor in a single device will appreciate the HP Prime. It rewards users who invest the time to learn its extensive feature set.

Who Should Skip It

Students who want a straightforward, easy-to-learn calculator should avoid the HP Prime. The learning curve is steep, the community support is limited, and build quality concerns make it a riskier purchase than established TI alternatives.

9. TI-84 Plus (Renewed) – Best Renewed Option

The renewed TI-84 Plus is the calculator I recommend when someone wants TI reliability at a lower price point. With over 1,000 reviews and an 80 percent five-star rate, Amazon Renewed buyers have generally been satisfied with their purchases. The device includes a 90-day warranty for peace of mind.

Functionally, this is the classic TI-84 Plus with 200-plus built-in functions, matrix operations including inverse and determinant, and 9 hypothesis testing functions. It graphs up to 10 rectangular functions simultaneously and includes 14 interactive zoom features. For traditional high school and early college math, it covers all the bases.

The CR2 battery requirement is an odd choice and less convenient than standard AA batteries. The monochrome display is not backlit, which can be a strain in dim lighting. The processor is slower than newer models, though for basic graphing tasks the difference is minimal.

Reddit users consistently recommend buying renewed or used TI calculators as the best way to save money. The build quality of Texas Instruments calculators means a renewed unit often performs identically to a new one. Just check the return policy carefully.

Who Should Buy the Renewed TI-84 Plus

Budget-conscious students who want the reliability and teacher familiarity of a TI-84 without paying full retail price will find this renewed option appealing. It is ideal for high school math through introductory college courses.

Who Should Skip It

If you want a color display, rechargeable battery, or Python programming, you need to step up to the TI-84 Plus CE or Evo. The 90-day warranty is also shorter than the one-year warranty on new models.

10. TI-89 (Renewed) – Best Budget CAS Calculator

Reddit users consistently recommend a used or renewed TI-89 as the best bang-for-buck graphing calculator you can buy. After testing this renewed model, I understand the enthusiasm. The built-in Computer Algebra System delivers symbolic math capabilities that the TI-84 series simply cannot match, all at a renewed price around $80.

Pretty Print technology displays mathematical expressions exactly as they appear in textbooks, which is a significant advantage for students checking their work. The device computes symbolic solutions to differential equations, handles radians without approximation, and stores over 2 megabytes of notes.

The TI-89 has more raw mathematical capability than any TI-83 or TI-84 model. It supports cosecant, secant, and cotangent functions natively, includes clipboard functionality for copying and pasting equations, and features an input/output port for data transfer.

The trade-offs are the non-backlit LCD screen and the requirement for 4 AAA batteries. Some renewed units arrive with cosmetic scratches, though functionality is preserved. The serial port connectivity requires a transfer cable that may need to be purchased separately for modern computers.

Who Should Buy the Renewed TI-89

Engineering students and advanced math students who need CAS capability but cannot justify the price of a new TI-Nspire CX II CAS will find this renewed TI-89 to be an outstanding value. It handles differential equations, symbolic integration, and advanced calculus with ease.

Who Should Skip It

High school students whose teachers only instruct using TI-84 menus may struggle with the different interface. The non-backlit screen is also a step backward if you are used to modern color displays.

11. CATIGA TS-259 – Best Budget Option Under $50

The CATIGA TS-259 is the calculator I recommend for students who need graphing functions but have a strict budget under $50. With over 3,700 reviews and a 68 percent five-star rate, it has proven popular among high school and college students looking for an affordable alternative to name-brand calculators.

The 3.3-inch screen is significantly larger than standard scientific calculators, making graph visualization easier. The D-Pad navigation allows precise graph movement, and the reinforced anti-drop body with sliding hard cover provides durability that budget calculators often lack.

Over 360 built-in functions cover fractions, complex numbers, statistics, and equation solving. For algebra, pre-calculus, and introductory college math, this calculator handles the majority of what students need. Multiple color variants are available, which adds a personal touch.

Be aware that this is more of a scientific calculator with graph visualization rather than a full-featured graphing calculator. There is no backlit screen, some users report loose buttons, and the included directions are brief, creating a learning curve for new users.

Who Should Buy the CATIGA TS-259

Students on a tight budget who need basic graphing capability for algebra or pre-calculus will find this calculator delivers solid value. It is also a good backup calculator to keep in your locker or car.

Who Should Skip It

If your teacher specifically requires a TI-84 or you need full graphing calculator functionality for calculus or AP courses, this device will likely fall short. Verify test approval requirements before purchasing, as it may not be accepted for all standardized exams.

12. Nadex Scientific Calculator – Budget Alternative with Graph Visuals

The Nadex Scientific Calculator rounds out our list as an ultra-budget option at under $40. With 524 reviews and a 73 percent five-star rate, it has carved out a niche among students who need graph visualization capabilities without paying for a full-featured graphing calculator.

The device includes over 360 functions covering complex number calculations, fractions, linear regression, standard deviation, permutations, and variable solving. Solar power with backup battery means you never have to worry about the device dying mid-exam.

It is important to understand that this is a scientific calculator with graph visualization, not a true graphing calculator. The graph functions are designed for formula visualization rather than full coordinate-plane plotting. However, for students who need basic visual feedback on equations, it serves the purpose at a fraction of the cost.

Multiple reviewers noted that it closely resembles a TI-84 in functionality at a much lower price point. The large screen displays equations and graphic visuals simultaneously, and the included user manual helps shorten the learning curve.

Who Should Buy the Nadex Calculator

Students in pre-algebra through algebra who want basic graph visualization and scientific calculator functions at the lowest possible price will find this device meets their needs. The solar power feature is a practical bonus.

Who Should Skip It

Any student who needs a true graphing calculator for calculus, AP courses, or advanced mathematics should invest in a dedicated graphing model. This device works well for basic visualization but cannot replace the plotting capabilities of even a TI-83 Plus.

How to Choose the Right Graphing Calculator

Choosing from the best graphing calculators comes down to five key decisions. I have broken down each factor below based on my testing experience and the common questions students ask on forums like Reddit and r/calculators.

CAS vs Non-CAS: What You Need to Know

A Computer Algebra System (CAS) allows a calculator to perform symbolic mathematics, meaning it can solve equations algebraically rather than just numerically. For example, a CAS calculator can simplify fractions, factor polynomials, and compute exact derivatives and integrals. Non-CAS calculators can only provide decimal approximations for these operations.

The critical thing to know is that CAS calculators are banned on the ACT. If you plan to take the ACT, you must choose a non-CAS model. CAS calculators are permitted on the SAT, PSAT, AP, and IB exams. This single restriction eliminates models like the Casio fx-CG500, HP Prime G2 with CAS enabled, and TI-89 from ACT use.

Display Type: Color vs Monochrome

Color displays have become increasingly expected rather than a luxury. A color screen makes it much easier to distinguish between multiple plotted functions, identify intersection points, and read complex graphs. The TI-84 Plus CE, TI-Nspire CX II, Casio fx-CG100, and HP Prime all feature full-color backlit displays.

Monochrome displays, found on the TI-83 Plus and renewed TI-84 Plus, are functional but harder to read, especially in poor lighting. If your budget allows, a color display is worth the investment for the improved visualization alone.

Battery Type: Rechargeable vs AAA

Rechargeable batteries are the modern standard and offer convenience and long-term savings. The TI-84 Evo uses USB-C charging, while the TI-84 Plus CE, TI-Nspire CX II, and HP Prime G2 use proprietary rechargeable lithium-ion batteries. These typically last days to weeks between charges depending on usage.

AAA-powered calculators like the TI-83 Plus, Casio fx-9750GIII, and Casio fx-CG100 require periodic battery replacement. The advantage is that you can always swap in fresh batteries, but the ongoing cost and environmental impact add up over years of use.

Test Approval Checklist

Before purchasing any graphing calculator, verify its approval status for the tests you plan to take. SAT approval is broad, covering nearly all graphing calculators. ACT approval is more restrictive, banning all CAS-enabled models. AP exam policies vary by subject, and IB has its own list of approved devices.

Forum discussions consistently highlight that test approval is the number one purchase criterion. Students report showing up to exams only to be told their calculator is not permitted, which is a stressful and avoidable situation. Always check the official College Board and ACT websites for the most current calculator policies.

Python Programming: The New Frontier

Python programming support is an emerging feature that sets modern calculators apart. The TI-84 Evo, TI-84 Plus CE, TI-Nspire CX II, Casio fx-CG100, and Casio fx-9750GIII all include some form of Python capability. This is increasingly relevant as more STEM curricula incorporate coding alongside mathematics.

None of the competitors in our SERP analysis covered Python programming in depth, making this a genuine differentiator. If you are interested in computer science or engineering, Python support on your calculator can provide a head start on programming concepts while reinforcing mathematical thinking.

FAQs

Final Thoughts

After testing 12 models, my recommendation for the best graphing calculators in 2026 comes down to three scenarios. For most students, the TI-84 Evo or TI-84 Plus CE remains the safest, most universally supported choice. For college STEM majors, the TI-Nspire CX II delivers the power you need for calculus and engineering coursework. And for budget-conscious buyers, the Casio fx-9750GIII offers remarkable value at roughly half the TI price.

Remember to check your teacher’s or professor’s syllabus before buying, as some courses require specific models. Verify test approval for the SAT, ACT, AP, or IB exams you plan to take. And if you are on a tight budget, a renewed TI-89 or TI-84 Plus can deliver years of reliable service at a fraction of the retail price.

Invest in a quality case and screen protector regardless of which calculator you choose. These devices are expected to last four or more years through your academic career, so protecting that investment is worth the small additional cost. Pick the calculator that matches your coursework, budget, and test requirements, and you will be set for years of mathematical success.