Convert millijoule to watt-second
Please provide values below to convert millijoule [mJ] to watt-second [W*s], or Convert watt-second to millijoule.
1 mJ = 0.001 W*s. To convert millijoule to watt-second, multiply the value by 0.001; to go the other way, divide by it (1 W*s = 1000 mJ). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 mJ = 0.001 W*s
- 1 W*s = 1000 mJ
- 10 mJ = 0.01 W*s
- 100 mJ = 0.1 W*s
How to Convert Millijoule to Watt-Second
1 mJ = 0.001 W*s
Example: convert 15 mJ to W*s:
15 mJ = 15 × 0.001 W*s = 0.015 W*s
Millijoule to Watt-Second Conversion Table
| millijoule | watt-second |
|---|---|
| 1 mJ | 0.001 W*s |
| 2 mJ | 0.002 W*s |
| 3 mJ | 0.003 W*s |
| 5 mJ | 0.005 W*s |
| 10 mJ | 0.01 W*s |
| 20 mJ | 0.02 W*s |
| 50 mJ | 0.05 W*s |
| 100 mJ | 0.1 W*s |
| 500 mJ | 0.5 W*s |
| 1000 mJ | 1 W*s |
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.
Watt-Second
A watt-second (W·s) is a unit of energy equivalent to one joule, representing the amount of energy transferred or converted when one watt of power is applied for one second.
History/Origin
The watt-second originated from the SI system of units, where the watt (W) is the SI derived unit of power, and the second (s) is the SI base unit of time. It has been used historically in physics and engineering to quantify energy, especially in contexts where energy transfer occurs over short durations.
Current Use
The watt-second is primarily used in scientific and engineering contexts to measure small amounts of energy, such as in electrical and mechanical systems. It is often replaced by the joule in modern applications but remains a recognized unit within the energy converter category.
Frequently Asked Questions
What is 1 millijoule in watt-second?
1 millijoule (mJ) = 0.001 watt-second (W*s).
How do you convert millijoule to watt-second?
Multiply the millijoule value by 0.001. For example, 25 mJ × 0.001 = 0.025 W*s.
What is 10 millijoule in watt-second?
10 mJ = 0.01 W*s.
Which unit is larger, the millijoule or the watt-second?
The watt-second is the larger unit: 1 mJ equals only 0.001 W*s.