Misc

Duration Converter

Runs locally

Use Duration Converter

What it does

Convert a duration between milliseconds, seconds, minutes, hours and days, and read it as hours, minutes and seconds.

It runs entirely in your browser: nothing you enter is uploaded.

Example

9000 seconds

Input
9000
Output (captured 2026-10-20)
MILLISECONDS
9,000,000
SECONDS
9000.00
MINUTES
150.00
HOURS
2.5000
DAYS
0.1042
READABLE
2h 30m 0s

With Seconds selected (the default): 150.00 minutes, 2.5000 hours, 0.1042 days and readable 2h 30m 0s.

FAQ

How are the results rounded?

Seconds and minutes show 2 decimals, hours and days 4, and the readable form drops fractions of a second. Hours are not split into days there, so 90000 seconds reads 25h 0m 0s.

Are months, years or negative values supported?

No. The largest unit is a 24-hour day, and negative values produce a confusing readable form, so enter positive durations.

Is anything sent?

No. The conversion is simple arithmetic in your browser.