Calculator
Free online calculator with basic and scientific modes, full keyboard support, and a running history you can reuse.
Works offlineCalculators
Type directly, or use the keypad. Enter evaluates, Esc clears.
History
About the calculator
Switch between a clean basic keypad and a scientific mode with trigonometry, logarithms, roots, powers, factorials and constants. Every result is kept in a history panel, so you can click any earlier line to drop it straight back into the display. The whole keypad is keyboard-driven: type expressions directly, press Enter to evaluate and Escape to clear.
This tool runs entirely in your browser. Nothing you type is uploaded, and it keeps working with no connection at all — including as an installed app.