Live age calculator
How Old Are You in Seconds?
Enter your birth date to calculate approximately how many seconds you have been alive. Add your birth time and time zone for a more precise live result.
You are approximately
seconds old
Enter your details to start the live counter.
About the Age in Seconds Calculator
Your result updates once every second. A date-only calculation begins at the start of your birth date, while an entered birth time and time zone provide a more precise starting moment.
How is my age in seconds calculated?
The calculator converts your entered birth date and optional birth time into a moment, then measures the elapsed seconds up to the present.
Is my age-in-seconds result exact?
A result using your birth date alone is approximate. Adding your birth time and birth time zone produces a more precise result.
Why is birth time optional?
Many people do not know their exact birth time, so the calculator can still provide an approximate result from the date alone.
Why do you need my birth time zone?
A local birth time represents a different universal moment depending on where it occurred. The time zone lets the calculator make the correct conversion.
Does the counter update live?
Yes. After calculating, the displayed number increases automatically once every second.
Is my birth information stored?
No. The calculation happens in your browser and your birth information is not sent to or stored on our server.