Everyday Math Calculators

Tip splitting, percentages, age, and other quick calculations for daily decisions.

• Age CalculatorCalculate your exact age in years, months, and days from a birth date. See total days lived and days until next birthday.
• Percentage CalculatorCalculate percentages, find what percent one number is of another, and determine percentage change between two values. Multi-mode percentage calculator with clear explanations.
• Split Bill CalculatorDivide a restaurant bill and tip evenly among your group. See exactly how much each person owes including their share of the tip.
• Tip CalculatorQuickly calculate tip amounts and split bills among friends. Choose preset percentages or enter custom tip % and divide by number of people.