Tool category

Calculators

Calculate common financial, date, health, and numerical results.

Available tools

Handle common percentage calculations with clear formulas and results.

Calculate percentage increase/decrease between two values.

Calculate mean plus basic count/sum statistics from a list of numbers.

Calculate age/duration between dates with clear date assumptions.

Calculate elapsed days and calendar differences between two dates.

Calculate durations between times and add/subtract durations.

Calculate discount amount and final price.

Calculate tax amount and total from a user-entered tax rate without assuming a jurisdiction.

Calculate tip and total with optional bill splitting.

Calculate estimated payment, total paid, and interest from principal, rate, and term with a clear informational disclaimer.

Calculate simple interest and final amount.

Calculate compound growth from user-supplied principal, rate, frequency, and time with a clear informational disclaimer.

Calculate profit, margin, and related values from cost and revenue.

Calculate markup percentage, cost, price, and profit.

Calculate break-even units/revenue from fixed cost, variable cost, and selling price.

Calculate a credit-weighted GPA from course grade points and credits, using your school's grading scale.

Calculate your weighted course grade from category scores and percentage weights, with clear results for partial or full course weights.

Compare product prices per item, kilogram, or liter across package sizes and multipacks, with automatic conversion between compatible units.