Hours to Milliseconds
Convert hours (h) to milliseconds (ms). Type in either box; the other updates as you go.
How to convert hours to milliseconds
To convert hours to milliseconds, multiply the number of hours by 3,600,000.
Example
Convert 5 hours to milliseconds:
Hour to millisecond conversion chart
| Hours (h) | Milliseconds (ms) |
|---|---|
| 1 h | 3,600,000 ms |
| 2 h | 7,200,000 ms |
| 3 h | 10,800,000 ms |
| 4 h | 14,400,000 ms |
| 5 h | 18,000,000 ms |
| 6 h | 21,600,000 ms |
| 7 h | 25,200,000 ms |
| 8 h | 28,800,000 ms |
| 9 h | 32,400,000 ms |
| 10 h | 36,000,000 ms |
| 12 h | 43,200,000 ms |
| 15 h | 54,000,000 ms |
| 20 h | 72,000,000 ms |
| 25 h | 90,000,000 ms |
| 30 h | 108,000,000 ms |
| 40 h | 144,000,000 ms |
| 50 h | 180,000,000 ms |
| 60 h | 216,000,000 ms |
| 70 h | 252,000,000 ms |
| 75 h | 270,000,000 ms |
| 80 h | 288,000,000 ms |
| 90 h | 324,000,000 ms |
| 100 h | 360,000,000 ms |
| 150 h | 540,000,000 ms |
| 200 h | 720,000,000 ms |
| 250 h | 900,000,000 ms |
| 500 h | 1,800,000,000 ms |
| 1,000 h | 3,600,000,000 ms |
Going the other way? See the milliseconds to hours chart.
About the units
Hour (h)
An hour is 60 minutes, or 3,600 seconds.
Millisecond (ms)
A millisecond is one thousandth of a second. Reaction times, network latency and audio delays are measured in milliseconds.
Frequently asked questions
How many milliseconds are in an hour?
There are 3,600,000 milliseconds in an hour.
How many hours are in a millisecond?
There are 2.777777778 × 10⁻⁷ hours in a millisecond.
How do you convert hours to milliseconds?
To convert hours to milliseconds, multiply the number of hours by 3,600,000.
What is 5 hours in milliseconds?
5 hours equals 18,000,000 milliseconds.
Convert between milliseconds, seconds, minutes, hours, days, weeks, months and years. Open the time converter to see a value in every unit at once.