Convert watt-hour to millijoule
Please provide values below to convert watt-hour [W*h] to millijoule [mJ], or Convert millijoule to watt-hour.
1 W*h = 3600000 mJ. To convert watt-hour to millijoule, multiply the value by 3600000; to go the other way, divide by it (1 mJ = 2.77777777778e-07 W*h). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 W*h = 3600000 mJ
- 1 mJ = 2.77777777778e-07 W*h
- 10 W*h = 36000000 mJ
- 100 W*h = 360000000 mJ
How to Convert Watt-Hour to Millijoule
1 W*h = 3600000 mJ
Example: convert 15 W*h to mJ:
15 W*h = 15 × 3600000 mJ = 54000000 mJ
Watt-Hour to Millijoule Conversion Table
| watt-hour | millijoule |
|---|---|
| 1 W*h | 3600000 mJ |
| 2 W*h | 7200000 mJ |
| 3 W*h | 10800000 mJ |
| 5 W*h | 18000000 mJ |
| 10 W*h | 36000000 mJ |
| 20 W*h | 72000000 mJ |
| 50 W*h | 180000000 mJ |
| 100 W*h | 360000000 mJ |
| 500 W*h | 1800000000 mJ |
| 1000 W*h | 3600000000 mJ |
Watt-Hour
A watt-hour (W·h) is a unit of energy equal to the amount of energy transferred or used when one watt of power is sustained for one hour.
History/Origin
The watt-hour was established as a practical unit of energy measurement with the adoption of the International System of Units (SI) and has been used in electrical and energy industries to quantify energy consumption and storage since the 20th century.
Current Use
Watt-hours are commonly used to measure electrical energy consumption in household appliances, batteries, and energy storage systems, providing a convenient unit for billing, capacity ratings, and energy management.
Millijoule
A millijoule (mJ) is a unit of energy equal to one thousandth of a joule, where 1 joule equals 1 newton meter or 1 kg·m²/s².
History/Origin
The millijoule is derived from the SI base unit joule, with the prefix 'milli' indicating a factor of 10⁻³. It has been used in scientific and engineering contexts to measure small amounts of energy, especially in fields like electronics and biomechanics.
Current Use
The millijoule is commonly used today to quantify small energy quantities in electronics, biomedical applications, and energy measurements where precision at a small scale is required.
Frequently Asked Questions
What is 1 watt-hour in millijoule?
1 watt-hour (W*h) = 3600000 millijoule (mJ).
How do you convert watt-hour to millijoule?
Multiply the watt-hour value by 3600000. For example, 25 W*h × 3600000 = 90000000 mJ.
What is 10 watt-hour in millijoule?
10 W*h = 36000000 mJ.
Which unit is larger, the watt-hour or the millijoule?
The watt-hour is the larger unit: 1 W*h = 3600000 mJ.