100 Joules to Watts
Joules measure energy and watts measure power, so the answer depends on time. Here is the wattage required to expend 100 J over each period.
100 W (over 1 second)
Because 1 watt = 1 joule per second, expending 100 J in exactly 1 second requires a power of 100 W.
- Over 1 minute
- 1.66667 W
- Over 1 hour
- 0.0277778 W
- Over 1 day
- 0.00115741 W
100 joules to watts, explained
A watt is a rate of energy transfer: one watt means one joule of energy is transferred every second. Therefore, to find out how many watts 100 joules equals, you must know how fast that energy is used.
For example, releasing 100 J over one hour (3,600 seconds) requires 100 ÷ 3,600 = 0.0277778 W. Releasing it slowly over a full day only requires 0.00115741 W.
The amount of energy never changes — only the rate at which it is delivered. Released in a single second it demands 100 W; spread across a full day the same 100 J needs only 0.00115741 W.
watts = 100 J ÷ time in seconds100 J = 100 J
100 J is enough energy to run a 10 W LED bulb for 10 seconds.
Need a different energy or time? Use the interactive converter below for any combination.
100 J power over time
| Time period | Power (watts) |
|---|---|
| 1 second | 100 W |
| 1 minute | 1.66667 W |
| 10 minutes | 0.166667 W |
| 1 hour | 0.0277778 W |
| 6 hours | 0.00462963 W |
| 1 day | 0.00115741 W |
Convert any energy and time
The full Joules to Watts converter handles J, kJ, MJ, and any time unit for instant power results.
FAQ: 100 joules
How many watts is 100 joules?
100 joules does not equal a fixed number of watts. Joules measure energy and watts measure power. To find watts, you must divide the joules by the time in seconds. For example, 100 J over 1 second is 100 W.
How do you convert 100 joules to watts?
Divide the 100 joules by the number of seconds the energy is released over. Power (W) = Energy (J) ÷ Time (s). If the time is 1 hour (3,600 seconds), it is 100 ÷ 3,600 = 0.0277778 W.
How much energy is 100 joules?
100 J is enough energy to run a 10 W LED bulb for 10 seconds.