PeakwayHQ
CalcBoard
Scientific calculator in your browser sidebar
Trig, log, powers, unit converter, hex/binary. Always one shortcut away.
Free forever. No account required.
Features
Scientific Functions
sin, cos, tan, log, ln, sqrt, powers, and more
Unit Converter
Length, weight, temperature, data storage
Programmer Mode
HEX, DEC, BIN conversion for developers
History & Memory
Recall past calculations, store values
Keyboard Shortcuts
Cmd+Shift+K to open, full keyboard support
Works Offline
No account, no internet required
How it works
1
Install
Add CalcBoard to your browser in one click
2
Open
Click the icon or press Cmd+Shift+K (Ctrl+Shift+K on Windows)
3
Calculate
Full scientific calculator always at your fingertips