Milliseconds to Hours Conversion

Enter the time in milliseconds below to get the value converted to hours.

Results in Hours:
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1 ms = 2.7778E-7 hr
Hint: use a scientific notation calculator to convert E notation to decimal

How to Convert Milliseconds to Hours

Calendars document the days in a month

To convert a millisecond measurement to an hour measurement, divide the time by the conversion ratio.

Since one hour is equal to 3,600,000 milliseconds, you can use this simple formula to convert:

hours = milliseconds ÷ 3,600,000

The time in hours is equal to the milliseconds divided by 3,600,000.

For example, here's how to convert 5,000,000 milliseconds to hours using the formula above.
5,000,000 ms = (5,000,000 ÷ 3,600,000) = 1.388889 hr

Milliseconds and hours are both units used to measure time. Keep reading to learn more about each unit of measure.


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 10-3. Milliseconds can be abbreviated as ms; for example, 1 millisecond can be written as 1 ms.


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; for example, 1 hour can be written as 1 hr.

Millisecond to Hour Conversion Table

Millisecond measurements converted to hours
Milliseconds Hours
1 ms 0.00000027778 hr
2 ms 0.00000055556 hr
3 ms 0.00000083333 hr
4 ms 0.0000011111 hr
5 ms 0.0000013889 hr
6 ms 0.0000016667 hr
7 ms 0.0000019444 hr
8 ms 0.0000022222 hr
9 ms 0.0000025 hr
10 ms 0.0000027778 hr
100 ms 0.000027778 hr
1,000 ms 0.000278 hr
10,000 ms 0.002778 hr
100,000 ms 0.027778 hr
1,000,000 ms 0.277778 hr
10,000,000 ms 2.7778 hr