Age Calculator - Exact Age in Years, Months, Days from Date of Birth
Calculate exact age in years, months, and days from any date of birth to any date
How it works
- 1Enter your date of birth
Pick the day, month, and year you were born.
- 2Set the reference date
Defaults to today, but you can change it to any past or future date to calculate age as of that date.
- 3Read your age
See exact age in years/months/days, total days lived, and countdown to your next birthday.
About Age Calculator - Exact Age in Years, Months, Days from Date of Birth
Free age calculator. Enter your date of birth and a reference date to see your exact age in years, months, and days, plus total days, weeks, hours, and minutes lived. Also shows the date of your next birthday and how many days until it. Runs entirely in your browser. Age Calculator - Exact Age in Years, Months, Days from Date of Birth on 712 Tools runs entirely inside your browser using modern JavaScript APIs - no server ever sees your data. That means instant results, complete privacy, and no upload limits.
Whether you need to calculate exact age in years, months, and days from any date of birth to any date for a debugging session, a quick sanity check, or a production incident, this tool is free to use as many times as you need. There are no watermarks, no sign-up, and no ads inside the tool itself.
Frequently asked questions
How is age calculated?
The tool counts complete years from your date of birth to the reference date, then complete months since your last birthday, then remaining days - the standard chronological age used in medical, legal, and school contexts.
Can I calculate age at a past date?
Yes - set the reference date to any past date to see how old you (or anyone) was on that day. Useful for insurance, school enrollment, or legal paperwork.
Is my date of birth uploaded?
No. All calculations run entirely in your browser.
Read more
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