Time Duration Converter
Local ProcessingConvert between time duration units including milliseconds, seconds, minutes, hours, days, and weeks.
How It Works & Processing Standards
Convert between the units listed below using s as the base unit.
| ms | 1 ms = 0.001 s |
| min | 1 min = 60 s |
| h | 1 h = 3600 s |
| day | 1 day = 86400 s |
| week | 1 week = 604800 s |
Tool processing runs in your browser. If you create a calculator or conversion share link, its values are included in the URL. See the privacy policy for account, analytics and advertising data.
Answers "how many hours is 90 minutes?" or "how many hours in 2 weeks?". Months and years are left out because their length varies.
A day is fixed at 24 hours and a week at 7 days. Months and years vary by calendar and are not offered (use the date tools for the span between two dates).
How to Use Time Duration Converter
- 1Enter a valueDecimals and negative numbers (for temperature, say) are accepted.
- 2Choose unitsPick the unit you have and the unit you want. The swap button reverses the direction.
- 3Read, copy or shareResults show up to six decimal places. Copy them or create a share link with the same value.
Examples
Common Use Cases
- Adding up work or study time in hours
- Program run times from ms to seconds
- Project durations in days or weeks
Frequently Asked Questions (FAQ)
Is 1.5 hours 1 hour 50 minutes?
No. 0.5 hours is 30 minutes, so it is 1 hour 30 minutes.
Why is there no month?
Months are 28 to 31 days long, so they cannot be converted as a fixed length.