Age Converter
Convert any age to months, weeks, days, hours, minutes, and seconds.
Find exactly how many days, hours, and minutes old you are down to the current moment.
Enter your birth date for exact results, or type an age in years.
Age conversions use standard time units.
Conversion factors:
- 1 year = 365.25 days (accounting for leap years)
- 1 year = 52.1775 weeks
- 1 year = 12 months
- 1 year = 8,766 hours
- 1 year = 525,960 minutes
- 1 year = 31,557,600 seconds
Fun age milestones:
- 1 billion seconds old ≈ age 31 years, 8 months
- 10,000 days old ≈ age 27 years, 4 months
- 1,000 weeks old ≈ age 19 years, 2 months
- 500 months old ≈ age 41 years, 8 months
Exact calculation: For precise results, enter your birth date. The calculator accounts for actual calendar days including leap years.
The 365.25 figure is the small fudge that turns the year math into an estimate rather than an exact count. A calendar year is 365 days, but Earth’s orbit takes about a quarter-day longer, which is why leap years exist, and averaging that quarter-day back in gives a tidy number. So the age-in-years conversions here are averages, while the birth-date calculation counts your real days, leap years included.
This sits firmly in the fun-fact category rather than the paperwork one. It’s the quick way to answer questions like how many days, hours, or heartbeats you’ve stacked up, not the figure you’d put on a legal form. For anything official, your exact age counted from your birth date is what matters.
How we build and check this converter
This converter runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.