Random Duration Generator
Generates a random duration between 1 second and 12 hours, formatted as hours, minutes and seconds — useful for placeholder data, estimates or games.
What this generator does
Produces a length of time rather than a point in time, for filling fields that measure how long something took.
How to use this tool
- Press generate for a random duration.
Worked examples
- Format
- 1h 42m
Common use cases
- Placeholder data for scheduling apps
- Estimating a random task length for a game
- Testing duration-formatting code
How this generator works
A length of time is drawn within the bounds you set and then converted into every unit that makes sense for it — so a draw is shown as hours and minutes as well as in plain minutes or seconds. The conversions are exact integers rather than rounded decimals, which is why 90 minutes reads as 1h 30m rather than 1.5 hours.
Limitations and good to know
- A duration, not a time of day and not a date range: it says how long, never when.
- Nothing accounts for calendar irregularities. Adding a generated duration to a real timestamp across a daylight-saving change will not give the answer arithmetic on the clock suggests.
- The draw is uniform between the bounds, so a duration near the middle is no more likely than one at either extreme.