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You're now using the most accurate free TI-84 calculator online. This tool replicates every key function of the physical Texas Instruments TI-84 Plus — including graphing, scientific calculations, statistics, matrices, and finance math — running entirely in your browser with zero downloads required.
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Press Y= to enter up to 10 functions. Press GRAPH to plot. Use TRACE and CALC to analyze curves, find zeros, maxima and intersections.
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Use STAT → Edit to enter data, then STAT → CALC for mean, standard deviation, regression models, and full hypothesis testing.
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Full scientific calculator with trig functions, logarithms, exponents, complex numbers, matrices, and the complete MATH and CATALOG menus.
Graph a function
Press Y= → type your function → press GRAPH. Use ZOOM 6 for standard window.
Find zeros / roots
After graphing, press 2ND → CALC → 2:zero, set left/right bounds, press ENTER.
Calculate statistics
Press STAT → Edit, enter data in L1, then STAT → CALC → 1-Var Stats.
Matrix operations
Press 2ND → MATRIX → Edit, enter your matrix, then return to home screen and use matrix name for operations.
You can use your keyboard for faster input. Numbers 0–9 work directly. Use * for multiply, / for divide, ^ for exponents, Enter for ENTER, and Escape for CLEAR. Arrow keys navigate the cursor on the calculator display.