What this tool does
Convert milliseconds to and from seconds, minutes, hours, microseconds, nanoseconds, and other time units. Type an amount in milliseconds, choose the units, and the tool converts it to seconds. It offers 6 time units and also shows the same amount in the others.
Inputs
- Value: A number.
- From: Choose one: Microsecond, Nanosecond, Millisecond, Second, Minute, Hour. Starts as Millisecond.
- To: Choose one of the same 6 units as "From". Starts as Second.
How to use
- Enter the amount you want to convert.
- Choose the unit to convert from and the unit to convert to.
- Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.
Worked examples
Conversions from milliseconds to seconds:
- 1 ms = 0.001 s
- 5 ms = 0.005 s
- 10 ms = 0.01 s
- 50 ms = 0.05 s
- 100 ms = 0.1 s
Multiply the number of milliseconds by 0.001 to get seconds. Both units are exact definitions, so 0.001 is the exact factor: 1 ms = 0.001 s.
Sources: Millisecond: SI Brochure, 9th edition (2019, updated 2022), Table 7 (SI prefixes). Second: SI Brochure, 9th edition (2019).
Limitations
- Converts a length of time between units. It does not work out the time between two calendar dates.
FAQs
- Q: How many seconds are in one millisecond?
- A: One millisecond is 0.001 seconds. Change the From and To boxes to convert any other pair of units.
- Q: Can I convert the other way, from seconds to milliseconds?
- A: Yes. Swap the From and To units. One second is 1,000 milliseconds.
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