Convert Millisecond to Second
Use this free converter to change milliseconds (ms) into seconds (s). Millisecond and second both measure time. As a quick reference, 1 ms equals 0.001 s, and 1 s equals 1000 ms.
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Second (s)
0.001
1 ms = 0.001 s
Time conversion table
| Millisecond | Second |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 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 |
| 1,000 | 1 |
How to convert Millisecond to Second
Multiply the millisecond value by 0.001 to get seconds.
- Enter the number of milliseconds you want to convert.
- The converter instantly shows the equivalent value in seconds.
- Worked example: 15 ms × 0.001 = 0.015 s.
- Use the swap button to reverse the conversion (second to millisecond).
About these units
Millisecond (ms)
- Definition
- A millisecond (ms) is one thousandth of a second.
- History
- It uses the SI prefix "milli-" and became important with electronics and computing.
- Current use
- Milliseconds measure response times, network latency, and reaction speed.
Second (s)
- Definition
- The second (s) is the SI base unit of time, defined by the radiation frequency of the caesium-133 atom.
- History
- Once 1/86,400 of a day, it was redefined in 1967 using atomic transitions for far greater precision.
- Current use
- The second is the foundation of timekeeping in science, technology, and daily life.
Frequently asked questions
How many seconds are in a millisecond?
There are 0.001 s in 1 ms. To convert, multiply the number of milliseconds by 0.001.
How do I convert milliseconds to seconds?
Multiply the millisecond value by 0.001 to get seconds. For example, 10 ms = 0.01 s.
Is this millisecond-to-second converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Millisecond to other time units
| Unit | 1 Millisecond equals |
|---|---|
| Second (s) | 0.001 s |
| Microsecond (µs) | 1000 µs |
| Minute (min) | 0.000016666667 min |
| Hour (h) | 2.7778e-7 h |
| Day (d) | 1.1574e-8 d |
| Week (wk) | 1.6534e-9 wk |
| Month (mo) | 3.8026e-10 mo |
| Year (yr) | 3.1688e-11 yr |