Free date calculator

Age Calculator

Find an exact age in years, months, and days, plus the next birthday and useful age milestones.

  • Instant answer
  • Private in your browser
  • No signup or download

Your dates

How old is someone on a certain date?

Exact age

Add both dates

Your answer will appear here.

Keep going

Related free tools

Date Difference CalculatorMeasure the exact time between two moments in calendar units, hours, minutes, and seconds.Days Between Dates CalculatorCount calendar days between two dates with clear start-day and end-day inclusion choices.Business-Day CalculatorCount workdays or add business days using your workweek and a custom holiday list.

Three simple steps

How to use it

  1. Enter a birth date and choose the date you want to measure against.
  2. Read the exact calendar age or switch to totals such as weeks and days.
  3. Use the next-birthday and milestone dates for planning.

Private by default

Your entries and results stay in this browser tab. Bookify does not upload, save, or sell the numbers you enter here.