Scientific calculator

Expressions, units, complex numbers,
matrices, plotting — in one place

Type math like you'd write it. Supports sin(pi/4), 5km + 3mi, (2+3i)^2, [1,2;3,4] * [5;6], derivative('x^3','x'), x = 42, f(t) = exp(-t^2). 100% in your browser.

angle rad deg

precision

About

What this is

SciCal is a feature-complete scientific calculator built around the math.js expression engine. Type math the way you'd write it in a paper — 2 sin(π/4), 5km/h in m/s, e^(iπ) + 1, det([1,2;3,4]), derivative('x^3','x') — and it just works.

Features

Live preview as you type, plus full result on Enter.
Units: 5km + 3mi, 30 m/s to km/h, automatic unit propagation.
Complex numbers, matrices, BigNumber precision.
Variables & functions: x = 42, f(t) = sin(t)^2.
Symbolic derivatives: derivative('cos(x)*x', 'x').
Constants library — CODATA 2018 physics, IAU 2015 astronomy, math.
Programmer mode — base conversion (hex/oct/bin), bitwise.
Plot mode — instant y = f(x) graphing, auto-scale.
Angle mode (rad/deg), precision selector, history navigation.
Fully client-side — no server, no tracking, no API keys.

Tips & tricks

Enter evaluates; Alt+↑/↓ navigates history.
Click any item in the History panel to restore it.
Click a Constant to insert its symbol at the cursor.
Use ans in expressions to refer to the last result.
Matrix literal: [1,2,3; 4,5,6; 7,8,9] (rows separated by ;).
Implicit multiplication works: 2pi, 3sin(x).

Acknowledgements