The calculator that thinks in plain text.
Zahl is a quiet, fast, natural-language calculator for macOS. Type what you mean — math, currencies, units, dates — and the answer appears next to it. Every sheet saves itself.
Zahl is a quiet, fast, natural-language calculator for macOS. Type what you mean — math, currencies, units, dates — and the answer appears next to it. Every sheet saves itself.
What it does
Zahl reads each line as a small expression. It knows numbers, money, units, time zones, dates, and your own variables — and it does the right thing without any modes, panels, or buttons.
Words and operators both work. Write the way you think.
Name a value, reuse it anywhere. prev grabs the line above.
Rates refresh hourly from public ECB data. Works offline with the last cache.
Length, mass, volume, area, energy, data, temperature, angle.
Add days, count business days, hop between cities.
Drop sum, average, or mean on a line. Blank lines reset.
Mix bases freely; convert with in hex / in binary.
Tabs at the bottom. Double-click to rename. Nothing to manage.
Pick the font, the canvas color, the result color. Always-on-top, menu bar, global hotkey.
One price. Yours forever.
A single license unlocks Zahl on up to two of your Macs. No subscriptions, no accounts, no telemetry. Free updates within the major version.