Type a math expression using + − × ÷, percent and parentheses. The result updates as you type — there is no button to press and nothing to submit.
A simple calculator that works everywhere
This free online calculator handles the everyday math you reach for most: adding up a bill, splitting a total, working out a quick percentage or checking a number before you commit to it. It runs as a full calculator app right inside your browser tab, on phones and desktops alike, with large, easy-to-tap keys and a clear read-out.
Type, tap or paste
You can enter a calculation three ways: press the on-screen keypad, use your physical keyboard (the number row, +, -, *, /, %, ^ and Enter all work), or paste a whole expression copied from somewhere else. Tap any value already on screen to select and edit just that number, so fixing a typo never means starting over.
Order of operations, handled for you
The calculator follows standard PEMDAS/BODMAS precedence, so multiplication and division are resolved before addition and subtraction. Use parentheses to group terms and control exactly how an expression is evaluated — for example (45 + 15) × 3 gives a different answer than 45 + 15 × 3.
Percentages and powers
The percent key turns the number before it into a fraction of one hundred, so 50% becomes 0.5 and 200 × 15% gives 30. Raise a number to a power with the caret, for example 2^10 for two to the tenth.
Private by default
Every calculation happens locally in your browser. Your numbers are never sent to a server, there is no sign-up, and your recent results stay on your own device so you can copy any answer with a single tap.