Microseconds to milliseconds
Type a value in microseconds to see it in milliseconds straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the microseconds box.
- Read the result in milliseconds as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
ms = µs × 0.001
Multiply the value in microseconds by 0.001 to get milliseconds.
Example
To convert 25 µs to milliseconds: 25 × 0.001 = 0.025 ms.
Conversion table
| Microseconds (µs) | Milliseconds (ms) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
About the units
- Microsecond
- One millionth of a second, exactly 0.000001 s.
- Millisecond
- One thousandth of a second, exactly 0.001 s. It is used for response times and network latency.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many milliseconds are in one microsecond?
1 µs = 0.001 ms exactly.
How do I convert microseconds to milliseconds?
Use ms = µs × 0.001. For example, 25 µs = 0.025 ms.
How many microseconds are in one millisecond?
1 ms = 1,000 µs.
How many days are in a month and a year here?
A year is the average Gregorian year of 365.2425 days and a month is 1/12 of that, 30.436875 days. Results are averages, so use a date calculator for the gap between two specific dates.
How is a Hijri year compared with a Gregorian year?
We use the tabular Islamic calendar average of about 354.367 days, so a Hijri year is roughly 11 days shorter than a Gregorian one. The result is approximate because real Hijri months follow the moon sighting.