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Calculators

From quick arithmetic to graphing, matrices, vectors, and financial planning — pick the right calculator for the job.

All Calculators · 9 Tools

Basic Calculator

Quick arithmetic with history — always available inline on the home page.

Scientific Calculator

Trig, logarithms, exponents, constants, memory & degree/radian modes — a full scientific calc in the browser.

⚡ Intermediate

Graphing Calculator

Plot up to 4 functions, zoom, pan, trace coordinates — works like a TI-84.

⚡ Intermediate

TI-84 Plus CE Emulator

Online TI-84 Plus CE — full keypad, 2nd & ALPHA, trig, logs, history, 7 themes, theater mode.

⚡ Intermediate

Matrix Calculator

Add, subtract, multiply, transpose, determinant, inverse & row-reduce matrices up to 4×4.

➡️ full-page

Vector Calculator

Add, subtract, scale, dot product, cross product, magnitude, unit vector & angle — in 2D and 3D.

⚡ Intermediate

⚖️ full-page

Equation Solver

Solve linear, quadratic, and 2×2 systems step-by-step with every algebraic step shown.

Dimensional Analysis

Build factor-label unit-conversion chains across 60+ units for physics, chemistry & engineering.

⚡ Intermediate

Compound interest, savings goals, loan amortization & investment growth calculators.

⚡ Intermediate

💡 Not sure which to use?

Start with the Scientific Calculator for most homework. Need to plot a curve? Try the Graphing Calculator. Working with unit conversions? The Dimensional Analysis tool is your friend.

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