Convert Joules to Watts for free with our J to W online calculator

## How To Convert Joules to Watts

To convert joules to watts, you need to use the following J to W formula:

**Watts (W) = Joules (J) / Time (seconds)**

For example, if a light bulb uses 10 Joules of energy (electrical) and stays lit for 2 seconds, you can find the power (wattage) of the bulb:

Power = 10 Joules / 2 seconds = 5 Watts

### Joules to Watts Conversion Examples

*Example 1*: Convert 500 joules to watts

**Input**: 500 joules**Result**: 500 watts

*Example 2*: Convert 10,000 joules to watts

**Input**: 10,000 joules**Result**: 10,000 watts

**Related: Joules to Kilojoules**