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A growing collection of calculators and tools — built for speed, designed for clarity, free to use.

5 tools available

Percentage Calculator

Calculate percentages instantly — find X% of Y, what percent X is of Y, and percentage change between two numbers.

Calculate tips and split bills between any number of people. Supports custom tip percentages and per-person breakdowns.

Compound Interest Calculator

See how your savings or investments grow over time with compound interest. Includes monthly contribution support.

Calculate your exact age in years, months, and days from your date of birth. Also shows days until your next birthday.

Calculate your Body Mass Index using height and weight. Supports both metric and imperial units with health range indicators.