Enter a date of birth to get exact age in years, months, and days — plus the totals in days, weeks, and months.
Counts calendar years/months/days between the two dates. Leap years are handled by real date math. General information only.
Exact age is the whole years, then leftover months, then leftover days between two dates — the same way you'd say someone is "34 years, 2 months, and 9 days old." The totals show the same span counted purely in days, weeks, or months.
Yes — it uses real calendar math, so February 29ths and varying month lengths are counted correctly.
Yes — change the "age at date" field to any date to see how old someone will be then.
Related: date difference calculator · savings goal calculator · all free calculators.
Yes. The Age Calculator is completely free, runs in your browser, and never asks for a signup, email, or download. Enter your numbers and the result updates instantly.
It uses standard formulas and recalculates the moment you change a value, so the math is exact for the inputs you enter. Treat the result as a reliable planning estimate; for decisions with legal or tax consequences, confirm the figures with a qualified professional.
Yes. The calculator is mobile-friendly and works on any phone, tablet, or computer — there is no app to install and nothing to save.
Yes. Scroll to “Add this free calculator to your site” above and copy the embed snippet to place the live calculator on your blog or website for free.
Last reviewed: September 2026. Free to use, no signup — Age Calculator by ToolWise Digital.
Copy the snippet to embed the live calculator on your blog or website — free for any site. The small “Calculator by ToolWise Digital” credit line keeps it free; you're welcome to remove it, but we appreciate you leaving it.
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