Hours to Milliseconds Converter
Enter the time in hours below to convert it to milliseconds.
Result in Milliseconds:
Do you want to convert milliseconds to hours?
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How to Convert Hours to Milliseconds
To convert a measurement in hours to a measurement in milliseconds, multiply the time by the following conversion ratio: 3,600,000 milliseconds/hour.
Since one hour is equal to 3,600,000 milliseconds, you can use this simple formula to convert:
milliseconds = hours × 3,600,000
The time in milliseconds is equal to the time in hours multiplied by 3,600,000.
For example, here's how to convert 5 hours to milliseconds using the formula above.
milliseconds = (5 hr × 3,600,000) = 18,000,000 ms
How Many Milliseconds Are in an Hour?
There are 3,600,000 milliseconds in an hour, which is why we use this value in the formula above.
1 hr = 3,600,000 ms
Hours and milliseconds are both units used to measure time. Keep reading to learn more about each unit of measure.
What Is an Hour?
The hour is a period of time equal to 1/24 of a day or 60 minutes.
The hour is an SI accepted unit for time for use with the metric system. Hours can be abbreviated as hr (plural hrs); for example, 1 hour can be written as 1 hr, and 2 hours can be written as 2 hrs.
Learn more about hours.
What Is a Millisecond?
One millisecond is equal to 1/1,000 of a second or 1,000 microseconds.
The millisecond is a multiple of the second, which is the SI base unit for time. In the metric system, "milli" is the prefix for thousandths, or 10-3. Milliseconds can be abbreviated as ms; for example, 1 millisecond can be written as 1 ms.
Learn more about milliseconds.
Hour to Millisecond Conversion Table
| Hours | Milliseconds |
|---|---|
| 0.000001 hr | 3.6 ms |
| 0.000002 hr | 7.2 ms |
| 0.000003 hr | 10.8 ms |
| 0.000004 hr | 14.4 ms |
| 0.000005 hr | 18 ms |
| 0.000006 hr | 21.6 ms |
| 0.000007 hr | 25.2 ms |
| 0.000008 hr | 28.8 ms |
| 0.000009 hr | 32.4 ms |
| 0.0000001 hr | 0.36 ms |
| 0.000001 hr | 3.6 ms |
| 0.00001 hr | 36 ms |
| 0.0001 hr | 360 ms |
| 0.001 hr | 3,600 ms |
| 0.01 hr | 36,000 ms |
| 0.1 hr | 360,000 ms |
| 1 hr | 3,600,000 ms |