The millisecond
The millisecond (ms) equals one-thousandth of a second. It is the standard unit for software response times, network latency, and video frame timing — human reaction time is typically 200–300 ms.
Milliseconds to Seconds Converter
1 ms = 0.001 s (millisecond → second)
1 ms = 0.001 s
1 millisecond equals 0.001 seconds. To convert milliseconds to seconds, multiply the millisecond value by 0.001. For quick reference: 1 ms = 0.001 s, 5 ms = 0.005 s, 10 ms = 0.01 s, 100 ms = 0.1 s.
Formula
Seconds = Milliseconds × 0.001Quick
How to convert milliseconds to seconds
Take your value
Start with your value in milliseconds.
Multiply by 0.001
Multiply the millisecond value by 0.001. This is the exact conversion factor from milliseconds to seconds.
Read the result
The product is your value in seconds. For example, 5 ms × 0.001 = 0.005 s.
Conversion formula
The exact factor from milliseconds to seconds is 0.001.
Seconds = Milliseconds × 0.001
Milliseconds to Seconds conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Milliseconds (ms) | Seconds (s) |
|---|---|
| 1 ms | 0.001 s |
| 2 ms | 0.002 s |
| 3 ms | 0.003 s |
| 4 ms | 0.004 s |
| 5 ms | 0.005 s |
| 6 ms | 0.006 s |
| 7 ms | 0.007 s |
| 8 ms | 0.008 s |
| 9 ms | 0.009 s |
| 10 ms | 0.01 s |
| 15 ms | 0.015 s |
| 20 ms | 0.02 s |
| 25 ms | 0.025 s |
| 30 ms | 0.03 s |
| 45 ms | 0.045 s |
| 60 ms | 0.06 s |
| 90 ms | 0.09 s |
| 100 ms | 0.1 s |
| 120 ms | 0.12 s |
| 150 ms | 0.15 s |
| 180 ms | 0.18 s |
| 240 ms | 0.24 s |
| 300 ms | 0.3 s |
| 360 ms | 0.36 s |
| 450 ms | 0.45 s |
| 500 ms | 0.5 s |
| 600 ms | 0.6 s |
| 750 ms | 0.75 s |
| 900 ms | 0.9 s |
| 1000 ms | 1 s |
| 1200 ms | 1.2 s |
| 1500 ms | 1.5 s |
| 1800 ms | 1.8 s |
| 2400 ms | 2.4 s |
| 3000 ms | 3 s |
| 3600 ms | 3.6 s |
| 4500 ms | 4.5 s |
| 6000 ms | 6 s |
| 7200 ms | 7.2 s |
| 9000 ms | 9 s |
| 10000 ms | 10 s |
| 18000 ms | 18 s |
| 36000 ms | 36 s |
| 43200 ms | 43.2 s |
| 86400 ms | 86.4 s |
| 172800 ms | 172.8 s |
| 604800 ms | 604.8 s |
| 1000000 ms | 1000 s |
| 31557600 ms | 31558 s |
| 100000000 ms | 100000 s |
Real-world reference
A camera shutter might fire in 4 ms. A good website response time is under 200 ms.
Frequently asked questions
- How many seconds are in 1 millisecond?
- 1 millisecond equals 0.001 seconds.
- How do I convert milliseconds to seconds?
- Multiply the millisecond value by 0.001. So x ms × 0.001 = the equivalent in s.
- What is 5 milliseconds in seconds?
- 5 milliseconds equals 0.005 seconds.
- What is 10 milliseconds in seconds?
- 10 milliseconds equals 0.01 seconds.
- What is 100 milliseconds in seconds?
- 100 milliseconds equals 0.1 seconds.
- How do I convert back from seconds to milliseconds?
- Multiply the second value by 1000. For example, 1 s = 1000 ms.
- Is the millisecond bigger than the second?
- No. 1 millisecond is smaller than 1 second. It takes 1000 milliseconds to equal 1 second.
- Are these conversion factors exact?
- The factor is derived directly from the SI definitions of millisecond and second; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.
About the millisecond and the second
The second
The second (s) is the SI base unit of time. It has been defined since 1967 in terms of the cesium-133 atomic transition, specifically as 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom.