About Calculator
A clean, keyboard-friendly calculator for everyday arithmetic — no ads in the keypad, no app to install, and it works offline.
What it does
Addition, subtraction, multiplication, division and percentages through a keypad that also takes your keyboard: digits, operators, Enter to evaluate and Escape to clear. The running expression stays visible so you can see what you actually typed rather than guessing what the machine heard.
When you'd use it
For the quick sum you'd otherwise do in a spreadsheet cell or a phone app — splitting a bill, checking an invoice, sanity-checking a number mid-meeting. If you need trigonometry, logarithms or constants, the Scientific Calculator is the same idea with a bigger keypad.
Common questions
- Does it keep a history of my calculations?
- The current expression stays on screen while you build it. Nothing is written to a server; anything retained lives only in your own browser.
- Can I use my keyboard instead of clicking?
- Yes. Number keys, + - * / and Enter all work, and Escape clears.
- Does it work offline?
- Yes. After your first visit the whole site is cached, so the calculator opens with no connection.