A walkthrough, end to end.
- 1
Type an expression like 12 * (5 + 3) - 4, or use the keypad.
- 2
Trailing % treats the value as percent (50% → 0.5).
- 3
Order of operations: parentheses → ×, ÷ → +, −.
Order of operations
PEMDAS: parentheses, exponents (not supported here — use the scientific calculator), then multiplication and division left-to-right, then addition and subtraction.
What you can do with this.
Tip and bill split
Compute a 18% tip on $42.50 and split four ways quickly.
Discounts
$120 with 25% off: 120 - 120*25%.
Quick spreadsheet check
Verify a single-cell computation without opening Excel.
Homework arithmetic
Check sums and products against your manual work.
Currency math
Multiply quantities and prices on the fly.
Unit conversion math
Multiply by conversion factors quickly.
Quick percent calc
Use trailing % anywhere in an expression.
Basic calculator 2026 — what's current
Standard utility tool; wins for being one tab away with no install.
Frequently asked.
+, −, ×, ÷, parentheses, decimals, and trailing %.
Double-precision floats. For huge integers use the big number calculator.
Not in this basic version — use the exponent calculator.
No. Everything runs locally in your browser.