Free calculator library

Dates & age calculators

Find an age or count the time between two calendar dates.

Age calculatorCalculate age in years, months and days.Date difference calculatorCount days between two dates.

How to use these calculators

Choose a calculator, enter values in the units shown and select Calculate. Review both the result and the formula notes. These tools are designed for general information; local taxes, fees, lender terms and individual health factors can change what applies to you.