How to Calculate Age from a Date of Birth
Key points
- Enter the date of birth
- Enter a reference date
- Read the age
Steps
- Enter the "Date of birth" in Calculate Age, Days Between Dates and Date Offsets.
- Enter a "Reference date" to see the age on that day. If empty, today is used.
- "Age" is shown in years, months and days.
The legal treatment of age may count the day differently. This tool uses the rule that you gain a year on your birthday.
Use "Calculate Age, Days Between Dates and Date Offsets" (free)
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