Everyday Calculators tools
Free calculators for percentages, discounts, dates, age, and unit conversion. Each one shows the formula, so you can check the answer rather than trust it.
Unit Converter
Convert length, weight, and temperature between metric and US units.
Date Duration Calculator
Count the days between two dates, including weeks, weekdays, and weekend days.
Percentage Calculator
Calculate percentages, increases, decreases, and simple ratios.
Age Calculator
Calculate age in years, months, days, and total days.