A calculator that stays out of your way
"Calculator" is one of the most-searched terms online every single month — usually because someone just needs a fast answer without digging through a phone app or a cluttered site full of pop-ups. This one works the moment the page loads: click or type, get your answer, done.
It supports the basics you actually use — addition, subtraction, multiplication, division, percent, sign flip, square root, and squaring — plus memory buttons (MC / MR / M+ / M−), a backspace key for fixing a typo without clearing everything, a one-tap copy button, and a short history of your last few calculations so you don't lose a number you needed a moment ago. Everything happens in your browser; nothing is sent anywhere.
Frequently asked questions
Is this calculator really free?
Yes — completely free, no sign-up, no account. It runs entirely in your browser, the same way every Calcoras tool does.
Does my calculation history get saved anywhere?
Only on your own device, in your browser's local storage. Nothing is sent to a server, and nobody but you can see it.
Can I use my keyboard instead of clicking?
Yes. Number keys, + - * /, Enter or = for the result, Escape to clear, Backspace to delete the last digit, and % for percent all work.
Does it work offline?
Once the page has loaded once, yes — it's plain JavaScript with no external calls, so it keeps working without a connection.
Does it have memory buttons?
Yes — M+ adds the current number to memory, M− subtracts it, MR recalls what's stored, and MC clears it. MR and MC light up when something is actually stored.
What happens if I keep pressing equals?
It repeats the last operation with the same number, just like a physical calculator — so 5 + 3 = gives 8, and pressing = again gives 11, then 14, and so on.
Can I copy my result?
Yes — tap the copy icon in the top corner of the display to copy the current number to your clipboard.