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📅 Age Calculator

Your exact age — down to the nanosecond. Updates live.

Birth date Time

years old

In any unit

Years—

Months—

Weeks—

Days—

Hours—

Minutes—

Seconds—

Milliseconds—

Microseconds—

Nanoseconds 🤓—

Calendar breakdown

You are—

Next birthday—

Day of week (born)—

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Nanosecond precision is theoretical — JavaScript timers don't actually have that resolution. The number is real (calculated from your birthday and current time) but the last few digits move in chunks of ~1ms.