Convert seconds to milliseconds
1 second equals 1,000 milliseconds. Enter a value below to convert instantly.
Need the other direction? Convert millisecond to second →
Formula
Multiply the number of seconds by 1000 to get milliseconds.
Step by step
- Start with 1 s.
- Multiply by the conversion factor 1000.
- 1 × 1000 = 1,000 ms.
Seconds to Milliseconds conversion table
| Seconds (s) | Milliseconds (ms) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 30 | 30,000 |
| 60 | 60,000 |
| 100 | 100,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
Convert Second to other time units
1 s expressed in every other time unit on this site.
- Second s 1
- Millisecond ms 1,000
- Microsecond µs 1,000,000
- Nanosecond ns 1,000,000,000
- Picosecond ps 1,000,000,000,000
- Femtosecond fs 1,000,000,000,000,000
- Attosecond as 1e+18
- Shake shake 100,000,000
- Planck Time tP 1.8548584e+43
- Minute min 0.016666667
- Hour h 0.00027777778
- Day d 0.000011574074
- Week wk 0.0000016534392
- Fortnight fortnight 8.2671958e-7
- Month mo 3.8026486e-7
- Quarter qtr 1.2675495e-7
- Year yr 3.1688739e-8
- Decade decade 3.1688739e-9
- Century century 3.1688739e-10
- Millennium millennium 3.1688739e-11
- Day (sidereal) d (sid) 0.000011605763
- Hour (sidereal) h (sid) 0.00027853831
- Minute (sidereal) min (sid) 0.016712299
- Second (sidereal) s (sid) 1.0027379
- Week (Julian) wk (Jul) 0.0000016534392
- Month (synodic) mo (syn) 3.9193494e-7
- Year (Julian) yr (Jul) 3.1688088e-8
- Year (leap) yr (leap) 3.1623153e-8
- Year (tropical) yr (trop) 3.1688761e-8
- Year (sidereal) yr (sid) 3.1687536e-8
- Year (common) yr (365d) 3.1709792e-8
- Quinquennial 5 yr 6.3419584e-9
- Septennial 7 yr 4.5299703e-9
- Octennial 8 yr 3.963724e-9
- Novennial 9 yr 3.5233102e-9
- Quindecennial 15 yr 2.1139861e-9
About the second
The second (s) is a SI unit of time. The SI base unit of time, defined by the caesium-133 hyperfine transition.
About the millisecond
The millisecond (ms) is a SI unit of time.
Where this conversion is used
Converting seconds to milliseconds comes up when scheduling, timers, project planning, and physics. Month and year use average calendar lengths, so they are approximate for any specific date range.
Related conversions
Frequently asked questions
How many milliseconds are in a second?
One second equals 1,000 milliseconds.
How do you convert seconds to milliseconds?
Multiply the number of seconds by 1000 to get milliseconds.
What is 1 millisecond in seconds?
One millisecond equals 0.001 seconds.
When would I convert seconds to milliseconds?
This conversion is common when scheduling, timers, project planning, and physics.
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.