Calculate percentages every way: what % of a number, percentage change, increase/decrease, and reverse percentage.
25% of 200 = (25 ÷ 100) × 200 = 50
Solve every common percentage problem instantly. Switch between modes to find what percent of one number is another, the percentage change between two values, or what number a percentage represents.
Simplify ratios, scale them up or down, or solve for a missing value in a proportion (A:B = C:D).
Calculate the final price after a percentage discount, or find the discount percentage given two prices.
Calculate your exact age in years, months, days, hours, and minutes from your date of birth to any date.
Calculate the exact number of years, months, weeks, days, and working days between any two dates.
Calculate the mean, median, mode, sum, and count from a list of numbers. Just paste or type your values.
Calculate the right tip and split the bill across people. Choose tip percentage and number of diners.