Math & Money Calculators

Calculate percentages, pay, discounts, costs, tips, and random values with clear inputs and results.

BOGO Calculator - Find the Real Discount

See the effective percentage discount across every item in a buy one, get one or buy X, get Y promotion.

Find an item's current cost per use and see how more uses can lower it.

Convert hourly pay into annual and periodic gross earnings.

Solve three common percentage problems instantly.

Find the percent increase or decrease between two values.

Generate random whole numbers or decimals within a custom range.

Convert annual salary into an equivalent hourly rate.

Calculate a tip and split the total bill in seconds.