Calculators

Calculate body fat percentage using the US Navy method. See lean mass, fat mass, and body composition category. Free body fat calculator.

Convert CGPA to percentage on 10-point or 4-point grading scales.

Calculate what percentage of your codebase is covered by tests to ensure adequate testing and reduce bugs. Integrates with common testing frameworks.

Convert fractions to decimals and percentages. Also simplifies fractions using GCD. Free fraction converter.

Calculate your average grade and letter grade from multiple scores.

Mix two hex colors together at any ratio to create a new color.

Convert between hexadecimal, decimal, octal, and binary number systems. Free base converter for programmers.

Convert between profit margin and markup percentage — see the difference and calculate selling price from cost.

Calculate markup percentage and profit margin from cost and selling price. Understand the difference between markup and margin.

Calculate percentage increase or decrease between two values. Shows absolute change and direction.

Scale recipe ingredient amounts up or down for any number of servings.

Calculate key SaaS metrics: MRR, ARR, LTV, CAC, LTV:CAC ratio, churn rate, and payback period from your business data.

Calculate actual screen dimensions from diagonal size and aspect ratio.

Estimate number of solar panels needed based on monthly electricity usage, location, and panel wattage.

Calculate tip amount and split the bill between any number of people. Works with any currency — globally applicable.

Calculate tip and split the bill evenly among any number of people.

Calculate words per minute (WPM) and characters per minute from a timed typing test — includes accuracy percentage.