Time Converter
1 s = 1000 ms
About the time category
Durations: from milliseconds in code to work weeks and long-haul flights.
You will reach for these conversions when estimating project durations across work days, weeks, and person-hours, or reading timeouts or latency figures in technical documentation.
- A typical football match plus halftime: 90 minutes, 1.5 hours
- A full work day: 8 hours, 480 minutes
Popular time conversions
Common mistakes
- A "work week" is 40 hours, but a calendar week is 168 hours; never mix them in estimates
- Leap years: 365.25 days per year on average, which is why the 2026 date math drifts without them
Frequently asked questions
Which time units does this converter support?
10 units: Second, Millisecond, Microsecond, Nanosecond, Minute, Hour, and more. All conversions run locally in your browser, nothing is sent to a server.
How accurate are the time conversions?
All factors follow the official SI definitions and internationally agreed standards. Results are shown with up to 8 significant digits, which is far beyond the precision of everyday measurements.
Is this converter free?
Yes, completely free and unlimited, supported by ads. No app install, no sign-up.