A walkthrough, end to end.
- 1
Pick your date of birth.
- 2
Optionally pick a target date (defaults to today).
- 3
See exact age in y/m/d, total days, hours, and minutes.
Date difference
Compute years, then months, then days using calendar rollover. Total time uses milliseconds between dates.
What you can do with this.
Birthday checker
Confirm exact age on a specific date.
Eligibility checks
Verify age cutoffs for events, school, voting, etc.
Pet ages
Compute pet age in human days or weeks.
Anniversary count
Total days since a milestone date.
Resume math
Verify time between roles or graduation dates.
Project age
How many days has a project been running?
Total minutes lived
Fun fact for birthdays and milestones.
Age 2026 — what's current
Standard date math; calculator wins for instant precise answers.
Frequently asked.
Calculations use your local time zone.
Handled automatically by JavaScript date math.
No. All math runs in your browser.
Yes — pick a future target to see age on that date.