Time Unit Converter
Convert seconds, minutes, hours, days, weeks, milliseconds, and nanoseconds.
Result
Enter a value to convert.
The calculation runs locally in your browser.
What this tool converts
Convert durations across nanoseconds, milliseconds, seconds, minutes, hours, days, and weeks.
How the conversion works
Enter a value, choose source and target units, and the result updates immediately. Dynamic equivalents use the same engine and internal precision.
Target duration = Source duration in seconds ÷ seconds per target unit
Verifiable example
1 hour equals 60 minutes or 3,600 seconds; 1 week equals 604,800 seconds.
Calculations run locally in the browser and require no external API.
Frequently asked questions
How many seconds are in an hour?
One hour contains exactly 3,600 seconds.
How many hours are in a week?
A seven-day week contains 168 hours.
Does it convert dates?
No. It converts durations; use Days Between Dates for calendar dates.