Everyday Math
3 free calculators & converters. Every tool runs entirely in your browser — nothing you type is uploaded.
Available calculators
Percentage Calculator
Calculate percentages, percentage change, and find the percentage of any number. Three ways: X% of Y, What % is X of Y, X is Y% of what.
Tip Calculator
Calculate restaurant tip by percentage, split the bill among friends, and round up or down. Free, no sign-up. Default tips 15% / 18% / 20% / 25% shown for quick comparison.
Currency Converter
Convert money between 40+ currencies with indicative mid-market exchange rates. Enter an amount, pick the currency, and see every value instantly. Free, no sign-up.