Scientific & Standard Online Calculator

Free online scientific calculator with trigonometric functions (sin, cos, tan), logarithms, square roots, factorials, degree/radian modes, and calculation history.

Overview

What this tool does

Perform standard math calculations and scientific trigonometric, logarithmic, and power equations.

100% private in-browser processing. Zero cloud uploads.

Tutorial

How to use it

1Use on-screen buttons or keyboard numbers and operators (+, -, *, /).
2Apply scientific functions (sin, cos, tan, log, ln, sqrt, factorials, powers).
3Switch between DEG and RAD modes, and inspect your calculation history.

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We process your documents privately in local sandbox storage. Your actual data remains in your browser tab. We never log, view, or store file contents.