Age Difference Calculator
Enter two dates of birth to compare ages, see who is older and get the exact difference down to the day.
Format: DD/MM/YYYY
Format: DD/MM/YYYY
Enter both dates of birth to compare ages
Your full age report - chronological age, zodiac sign, planetary ages, milestones and more - will appear here.
Frequently Asked Questions
Who is considered older?
The person with the earlier date of birth. If the dates are identical, the difference is zero and neither is older.
How is the age difference expressed?
As full years, months and days, plus the equivalent in weeks, hours and minutes for a quick overview.
Can I use custom labels instead of Person A and Person B?
Yes. Type your own labels, for example names like 'Alice' and 'Bob', and they will be used in the headline and summary.
Does the difference account for leap years?
Yes. All date math uses a tested library, so leap years, February 29 and month-end dates are handled correctly.
How precise is the result?
The difference is computed on exact calendar dates and is precise to the day.
Can I share or save the result?
Yes. Use the Copy or Share buttons to send a plain-text summary, or download a branded PDF report.