Age Calculator

Determine your precise age in years, months, days, hours, and minutes, along with days until next birthday.

Last reviewed: June 2026
Built and maintained by · Last updated June 2026
Your Age
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Total Months
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Total Weeks
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Total Days
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Total Hours
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Next Birthday
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Quick Answer

To calculate age, subtract the birth date from today's date. The result is usually given in years, but this calculator also shows your exact age in months, weeks, days, hours, and seconds. Enter your date of birth above for an instant breakdown. Age in years counts completed years, so you stay "30" until the day before your 31st birthday.

Important Disclaimer: This calculator is for date math and record keeping only. It does not verify identity, legal eligibility, medical status, insurance rating, or benefit eligibility.

How to use the Age Calculator

The Age Calculator answers a precise calendar question: how much time has elapsed between a birth date and another date. Enter the date of birth, leave the calculation date set to today or choose a specific target date, and the calculator returns completed years, remaining months, remaining days, total months, total weeks, total days, total hours, and the next birthday countdown.

This is useful when a form needs exact age, when a school or sports program has a cutoff date, when you are checking age on a historical record, or when you simply need a clean birthday countdown. The calculation uses the actual calendar instead of assuming every month has the same length, so February, leap years, and month-end dates are handled as date math rather than rough averages.

Worked example

If someone was born on June 15, 1994 and the calculation date is June 2, 2026, their completed age is 31 years, 11 months, and 18 days. The next birthday is 13 days away, and the person turns 32 on June 15, 2026. Changing the calculation date lets you answer the same question for a future deadline or a past document date without doing the calendar counting manually.

Common mistakes to avoid

  • Using rounded years for exact-age rules: A person who is 31 years and 11 months old is not yet 32 for most cutoff rules.
  • Ignoring the target date: Age on a school, sports, travel, or insurance form may be based on a specific date rather than today.
  • Assuming every month is 30 days: Exact age depends on the real month lengths between the two dates.
  • Overusing the result: The calculator helps with date math, but the organization setting the rule decides eligibility.

Frequently Asked Questions

It reports calendar age in years, months, and days, plus total months, weeks, days, hours, and the number of days until the next birthday.
Yes. Change the Calculate Age On field to any past or future date to answer questions like age on a deadline, event date, school cutoff, or document date.
The calculator uses real calendar dates, so leap years and February 29 are included in the elapsed-day calculation. Birthday rules for leap-day births can still vary by institution.
Rounded age usually counts only completed years. Exact age also includes the remaining months and days, which matters for cutoff dates, eligibility windows, and record keeping.
Use it as a date math aid, then verify the relevant agency, school, insurer, or program rule. The calculator does not determine legal status or benefit eligibility.