Convert joule/hour to milliwatt
Please provide values below to convert joule/hour [J/h] to milliwatt [mW], or Convert milliwatt to joule/hour.
1 J/h = 0.277778 mW. To convert joule/hour to milliwatt, multiply the value by 0.277778; to go the other way, divide by it (1 mW = 3.59999712 J/h). Both units measure power and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 J/h = 0.277778 mW
- 1 mW = 3.59999712 J/h
- 10 J/h = 2.77778 mW
- 100 J/h = 27.7778 mW
How to Convert Joule/hour to Milliwatt
1 J/h = 0.277778 mW
Example: convert 15 J/h to mW:
15 J/h = 15 × 0.277778 mW = 4.16667 mW
Joule/hour to Milliwatt Conversion Table
| joule/hour | milliwatt |
|---|---|
| 1 J/h | 0.277778 mW |
| 2 J/h | 0.555556 mW |
| 3 J/h | 0.833334 mW |
| 5 J/h | 1.38889 mW |
| 10 J/h | 2.77778 mW |
| 20 J/h | 5.55556 mW |
| 50 J/h | 13.8889 mW |
| 100 J/h | 27.7778 mW |
| 500 J/h | 138.889 mW |
| 1000 J/h | 277.778 mW |
Joule/hour
A joule per hour (J/h) is a unit of power representing the amount of energy (in joules) transferred or converted per hour.
History/Origin
The joule per hour has been used as a measure of power in various scientific and engineering contexts, especially where energy transfer rates are expressed over longer periods. It is derived from the SI unit of energy, the joule, divided by time in hours.
Current Use
Joule per hour is occasionally used in fields like heating, energy consumption, and industrial processes to quantify power over extended durations, though it is less common than watts for standard power measurements.
Milliwatt
A milliwatt (mW) is a unit of power equal to one thousandth of a watt, used to measure small amounts of power.
History/Origin
The milliwatt was introduced as part of the metric system to provide a convenient unit for measuring low power levels, especially in electronics and telecommunications, with its usage expanding alongside the adoption of the watt as the standard power unit.
Current Use
Milliwatts are commonly used today in electronics, audio equipment, and wireless communication devices to specify power levels, such as in battery-powered devices, LED brightness, and signal transmission power.
Frequently Asked Questions
What is 1 joule/hour in milliwatt?
1 joule/hour (J/h) = 0.277778 milliwatt (mW).
How do you convert joule/hour to milliwatt?
Multiply the joule/hour value by 0.277778. For example, 25 J/h × 0.277778 = 6.94445 mW.
What is 10 joule/hour in milliwatt?
10 J/h = 2.77778 mW.
Which unit is larger, the joule/hour or the milliwatt?
The milliwatt is the larger unit: 1 J/h equals only 0.277778 mW.