Calculator Online (Arithmetic with Exponents)
Runs 100% in your browser — your files never leave your device.
Quick arithmetic should not need a spreadsheet. Type or tap an expression with +, −, *, /, %, powers (^), and parentheses, and the answer updates as you type — with the full expression kept visible so you can check what you computed. Float noise is rounded away: 0.1 + 0.2 really is 0.3 here.
How it works
- 1
Type or tap the expression
Use the keypad or your keyboard — digits, operators, powers, and parentheses.
- 2
Read the live result
The answer appears as soon as the expression is valid; mistakes explain themselves.
- 3
Edit and continue
Change any part of the expression and the result follows instantly.
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