Math Calculators
Solve everyday math problems instantly. Compute percentages, exact ages, the difference between two dates, or your weighted GPA — without juggling spreadsheets or rusty algebra.
Percentage Calculator
Calculate percent of a number, what percent X is of Y, and percentage change between two values.
Open calculatorAge Calculator
Calculate your exact age in years, months, days, hours and seconds. Includes zodiac and generation.
Open calculatorDate Calculator
Days between two dates, add or subtract days, day of the week and business-day calculator.
Open calculatorGPA Calculator
Calculate weighted and unweighted GPA on multiple scales. Includes "GPA needed" reverse calculator.
Open calculatorFraction Calculator
Add, subtract, multiply, divide and simplify fractions. Convert to decimal or mixed number with worked steps.
Open calculatorRatio Calculator
Simplify, scale and split ratios. Find equivalent ratios with the cross-multiply method.
Open calculatorAverage Calculator
Compute mean, median, mode, range and standard deviation from a list of numbers.
Open calculatorTime Calculator
Add, subtract and convert times in hours, minutes and seconds. Includes elapsed-time and decimal-hour conversion.
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