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GARGLOO

Age Calculator

Exact age down to the day.

Runs on your device

At a glance

Input:
Numbers you enter
Processing:
Runs locally in your browser
Privacy:
Your files stay on your device — nothing is uploaded to a server

About this tool

Precise chronological age for forms, visa applications and curiosity — expressed three ways plus totals in days, hours and minutes.

How to use it

  1. Enter the date of birth.
  2. Optionally set an 'as of' date other than today.
  3. Read exact age and next-birthday countdown.

Frequently asked questions

How is age in months and days computed?

Calendar-exact: complete years first, then complete months, then remaining days using real month lengths including leap years.

Does it handle leap-day birthdays (Feb 29)?

Yes. In non-leap years the birthday is treated as March 1 for 'next birthday' purposes, matching common legal conventions.

Is my birth date stored?

No. The calculation runs locally; nothing is sent or saved when you close the tab.