Calculator

A grocery receipt split four ways, a tip on a 48 dollar bill, a loan ratio for a side project. Mental math handles small tasks, but bigger numbers invite mistakes.

Keyboard-friendly for speed

Click the keypad or type from the keyboard. The display updates instantly. Press Enter to solve the current expression just like a desk calculator.

Use parentheses to keep order of operations straight, and the percent key for quick discounts or taxes.

Percent keys behave differently on phones and spreadsheets

Some calculators treat 100 + 10% as 110. Others return 100.1. We follow the simpler percentage model, so 50 + 10% equals 55, matching most pocket calculators.

Long expressions can overflow

The display caps at 15 digits. For heavy number crunching, export to a dedicated spreadsheet.