Every calculation, beautifully simple

Work out percentages fast: X% of Y, what percent one number is of another, and percentage change.

Calculate your Body Mass Index (BMI) from height and weight, with the WHO weight category.

Calculate your monthly mortgage payment, total interest and total cost from the loan amount, annual interest rate and loan term in years.

Calculate exact age in years, months and days between a birth date and any date.

See how your money grows with compound interest across different compounding frequencies.

Calculate the exact difference between two dates in years, months, days, weeks and total days. Free online date duration calculator.

Convert between major world currencies with live, daily-updated exchange rates.

Convert pay between hourly, weekly, monthly and annual figures using your hours per week and weeks per year.