1,000 Joules to Watts
Joules measure energy and watts measure power, so the answer depends on time. Here is the wattage required to expend 1000 J over each period.
1,000 W (over 1 second)
Because 1 watt = 1 joule per second, expending 1000 J in exactly 1 second requires a power of 1,000 W.
- Over 1 minute
- 16.6667 W
- Over 1 hour
- 0.277778 W
- Over 1 day
- 0.0115741 W
1000 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 1000 joules equals, you must know how fast that energy is used.
For example, releasing 1000 J over one hour (3,600 seconds) requires 1000 ÷ 3,600 = 0.277778 W. Releasing it slowly over a full day only requires 0.0115741 W.
That same energy is 1 kJ. The amount of energy never changes — only the rate at which it is delivered. Released in a single second it demands 1,000 W; spread across a full day the same 1,000 J needs only 0.0115741 W. 1,000 J is exactly 1 kilojoule (kJ), the SI multiple used for food energy and battery specs.
watts = 1000 J ÷ time in seconds1,000 J = 1 kJ
1,000 J is enough energy to run a 10 W LED bulb for 100 seconds.
Need a different energy or time? Use the interactive converter below for any combination.
1000 J power over time
| Time period | Power (watts) |
|---|---|
| 1 second | 1,000 W |
| 1 minute | 16.6667 W |
| 10 minutes | 1.66667 W |
| 1 hour | 0.277778 W |
| 6 hours | 0.0462963 W |
| 1 day | 0.0115741 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: 1000 joules
How many watts is 1000 joules?
1000 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, 1000 J over 1 second is 1,000 W.
How do you convert 1000 joules to watts?
Divide the 1000 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 1000 ÷ 3,600 = 0.277778 W.
How much energy is 1000 joules?
That same energy is 1 kJ. 1,000 J is enough energy to run a 10 W LED bulb for 100 seconds. 1,000 J is exactly 1 kilojoule (kJ), the SI multiple used for food energy and battery specs.