Calculators & Converters

Fast everyday calculators and accurate unit conversions.

Percentage Calculator

Calculate percentages, percentage share, and percentage change.

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

Calculate body mass index and see the standard weight category.

Loan Payment Calculator

Estimate monthly payments, total interest, and total loan cost.

Convert common length, weight, and temperature units instantly.

Unix Timestamp Converter

Convert Unix timestamps to readable dates and dates back to Unix time.