This age calculator gives an exact age from a date of birth, right in your browser. Enter the birth date and you get the age in years, months and days, the same span as totals in months, weeks and days, the weekday you were born on and how many days remain until the next birthday. Nothing is sent to a server, and it spends no credits.
How to calculate your exact age
Count the full years since the birth date, then the full months since the last birthday, then the days left over. Someone born on July 14, 1990 is 36 years, 3 months and 7 days old on October 21, 2026. Doing that by hand means remembering which months have 30 or 31 days and whether February had 29. The age calculator handles the calendar for you, leap years included.
How old am I in months, weeks and days?
The same person has lived 435 months, 1,892 weeks or 13,248 days on October 21, 2026. Totals like these are handy for a baby’s age in weeks, a milestone day count, or a form that asks for age in months.
What day of the week was I born?
July 14, 1990 was a Saturday. The tool shows the weekday for any birth date you enter.
How many days until my next birthday?
From October 21, 2026, the next July 14 is 266 days away. The countdown updates as you change either date.
Age on a date other than today
“Age on” is set to today, but you can move it. Pick a past date to see how old someone was at an event, or a future one to see how old they will be on a deadline, a trip or an eligibility date.
Who it’s for
- Anyone filling in a form that asks for an exact age.
- Parents tracking a child’s age in weeks or months.
- People planning a milestone birthday or a day-count celebration.
- Genealogists and writers checking ages on historical dates.
FAQ
Can I work out someone else’s age?
Yes. Enter any date of birth: a child’s, a parent’s, or a historical figure’s, and set “age on” to the date you care about.
Is my date of birth sent anywhere?
No. The age calculator runs entirely in your browser and stores nothing.
What does it cost?
It comes with the Nexin library: Nexin Lite or Nexin Pro opens it, and it spends no credits.
