How many seconds are in a week?
Exactly 604,800 seconds under the seven-day definition.
Time Unit Converter
Convert milliseconds, seconds, minutes, hours, days, weeks, and years.
Calculations happen locally. We do not send your values to our server.
Example
1 day equals 24 hours, 1,440 minutes, or 86,400 seconds.
Calculation method
All units normalize to seconds. A converter year is defined as 365.25 days.
Important notes
Calendar months are excluded because their lengths vary.
Frequently asked questions
Why is a year 365.25 days?
It is a conventional average for unit conversion, not a specific calendar year.
Can this convert months?
No. A month has no single fixed duration.