Use TI-84 Calculator Online
TI-84 Plus CE Emulator
Full-featured graphing calculator that works right in your browser. Supports trig, logs, graphing, statistics, variable storage, and more.
What Is a TI-84 Graphing Calculator?
The TI-84 graphing calculator is a handheld electronic device manufactured by Texas Instruments. It is one of the most widely used graphing calculators in the world, especially popular among high school and college students in the United States.
The TI-84 family includes several models:
- TI-84 Plus — The classic model with a monochrome LCD screen, 24KB RAM, and USB connectivity
- TI-84 Plus Silver Edition — Enhanced version with more memory (48KB RAM) and interchangeable faceplates
- TI-84 Plus CE — The latest model featuring a full-color display, rechargeable battery, slimmer design, and 3MB of flash memory
- TI-84 Plus CE Python Edition — Newest variant with built-in Python programming capability
The TI-84 is approved for use on major standardized tests including the SAT, ACT, AP exams, and IB exams, making it the go-to calculator for exam preparation.
💡 Tip: Don't have a physical TI-84? You can use our free online TI-84 emulator for homework, practice, and learning — no purchase required!
TI-83 vs TI-84: Quick Comparison
Choosing between the TI-83 and TI-84? Here's the key differences at a glance:
| Feature | TI-83 Plus | TI-84 Plus CE |
|---|---|---|
| Display | 96×64 Monochrome | 320×240 Full Color |
| Processor | 6 MHz Zilog Z80 | 48 MHz eZ80 |
| RAM | 24 KB | 154 KB |
| Flash Memory | 160 KB | 3 MB |
| Battery | 4× AAA batteries | Rechargeable Li-Ion |
| USB | ✗ No | ✓ Mini-USB |
| Price (USA) | ~$50 | ~$120–$150 |
| Exam Approved | ✓ SAT, ACT, AP | ✓ SAT, ACT, AP |
🏆 Verdict
The TI-84 Plus CE is the clear winner for most students. It's faster, has a color screen, rechargeable battery, and more memory. The TI-83 Plus is only recommended if you're on a very tight budget.
Read Full Comparison →How to Use TI-84 (Step-by-Step)
New to the TI-84? Here's a quick overview of the most essential operations:
Basic Arithmetic
Use the number keys and operation buttons (+, −, ×, ÷) to perform calculations. Press ENTER to execute. The result appears on the right side of the display.
Graphing Functions
Press Y= to enter function editor. Type your equation (e.g., x²+2x-3). Press GRAPH to plot. Use WINDOW to adjust the viewing range.
Scientific Functions
Access SIN, COS, TAN, LOG, LN directly from the keypad. Press 2ND first for inverse functions (sin⁻¹, cos⁻¹, tan⁻¹).
Storing Variables
Calculate a value, then press STO→ followed by a letter key (A-Z) to save it. Recall stored values by pressing ALPHA + the letter key.
Degree vs Radian Mode
Press MODE to toggle between DEG and RAD. This affects all trigonometric calculations. Use DEG for most school work and RAD for calculus.
Common TI-84 Functions
Graphing
Plot multiple y=f(x) functions, adjust window settings, trace curves, find intersections, and analyze graph behavior.
Algebra
Solve equations, factor polynomials, work with fractions, exponents, radicals, and complex expressions with ease.
Statistics
Calculate mean, median, standard deviation. Perform regressions (linear, quadratic, exponential) and create statistical plots.
Calculus
Evaluate numeric derivatives and integrals, find function minimums/maximums, and explore limits graphically.
Trigonometry
Compute sin, cos, tan and their inverses in both degree and radian modes. Graph trig functions and analyze periods.
Matrices
Define, add, multiply, and invert matrices. Solve systems of linear equations using row reduction and determinants.
TI-84 Games & Downloads
Did you know you can play games on your TI-84 calculator? Popular games include Tetris, Snake, Mario, Pac-Man, and Flappy Bird — all designed to run on the TI-84's processor.
Games are installed by transferring .8xp program files from your computer to the calculator via USB cable. While games are a fun way to explore your calculator, they're only available on the physical device — not on online emulators.
Reset, Battery & Troubleshooting
If your TI-84 is frozen, displaying errors, or behaving unexpectedly, a reset usually fixes the issue. There are three types of resets:
- RAM Reset — Clears temporary memory but keeps archived programs. The safest option.
- Archive Reset — Clears archived data including saved programs.
- Factory Reset — Returns calculator to out-of-box state. All data is lost.
For battery issues: The TI-84 Plus uses 4× AAA batteries (plus a CR1616 backup). The TI-84 Plus CE uses a built-in rechargeable Li-Ion battery charged via USB.
Buying a TI-84 vs Using Online
🌐 Online (Free)
- ✅ Instant access
- ✅ No downloads
- ✅ Graphing + Scientific
- ✅ Mobile friendly
- ❌ Not for exams
- ❌ Needs internet
🇺🇸 Buy New (USA)
- ✅ Exam approved
- ✅ Full features
- ✅ Physical device
- ✅ No internet needed
- ❌ Expensive
- ❌ Easy to lose/break
🇮🇳 Buy in India
- ✅ Exam approved
- ✅ Full features
- ✅ Physical device
- ✅ Available on Flipkart
- ❌ High price in INR
- ❌ Limited availability
Frequently Asked Questions
Yes! Our online TI-84 emulator is completely free. It works in any modern web browser — no sign-up, no download, no payment required. You can perform all standard graphing and scientific calculations.
The physical TI-84 calculator is approved for SAT, ACT, AP, IB, and most other standardized tests. However, online versions are NOT allowed during exams since they require internet access. Use our online tool for practice, then bring your physical TI-84 to the exam.
The TI-84 Plus CE is better in almost every way: faster processor (48 MHz vs 6 MHz), color display, rechargeable battery, more memory, and USB connectivity. The TI-83 is only better in terms of price (~$50 vs ~$120). Read our full comparison.
In the US, a new TI-84 Plus CE costs $120–$150. Used models go for $50–$90. In India, prices range from ₹8,000–₹15,000. You can also rent a TI-84 for $5–$15/month from some services. Or use our free online version for everyday calculations.
The TI-84 Plus uses 4× AAA batteries plus a CR1616 backup coin cell. The TI-84 Plus CE has a built-in rechargeable lithium-ion battery that charges via USB and lasts about 1 month on a single charge. Read our battery guide.
Yes! The physical TI-84 supports game files (.8xp) transferred via USB. Popular games include Tetris, Snake, Mario, Pac-Man, and more. Note: games only work on the physical calculator, not the online emulator. Browse TI-84 games.
Press 2ND → + (MEM) → 7 (Reset) → 1 (All RAM) → 2 (Reset). This clears RAM while keeping archived programs. For a full factory reset, choose "All Memory" instead. Full reset guide.
The TI-89 is more advanced with a Computer Algebra System (CAS) that can do symbolic math — factoring, solving equations symbolically, and symbolic calculus. The TI-84 only does numeric calculations. However, the TI-89 is NOT allowed on some exams. Read full TI-84 vs TI-89 comparison.