On this page is an age in seconds calculator. Enter your birthday and we'll instantly tell you how many seconds you've been alive - plus minutes, hours, and years.
Age in seconds calculator
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Using the age in seconds calculator
To find out how many seconds old you (or anyone) are:
- Birthday: Enter the date and time you were born. Adjust for your current timezone if needed.
- Auto-Calculate: Results update instantly as you change the date - no button needed.
- Live Counter: Watch your age in seconds tick up in real-time!
The main result shows your age in seconds. The secondary line shows minutes, hours, and years for context.
(And don't worry, the tool does factor in leap years.)
More age calculators
Want to express your age in a different unit? Try one of these:
