Practical tools for measured work
Energy converter
Convert joules, watt-hours and thermochemical calories with visible equivalences.
Calculate the layout, check the diagram, then print the result for the shop or jobsite.
1 kWh × 3600000 = 3600000 J
Equivalent measurements
| Unit | Value |
|---|---|
| J | 3600000 |
| kJ | 3600 |
| MJ | 3.6 |
| Wh | 1000 |
| kWh | 1 |
| cal (th) | 860420.6501 |
| kcal (th) | 860.4206501 |
How it works
Enter a value, choose its current unit and select the target unit. The table shows equivalent values within the same physical quantity. Signed values are supported; conversion does not change the meaning of a negative measurement.
1 kWh = 3,600,000 J; 1 kcal (th) = 4184 J
Torque and energy have different physical meanings even though both involve force and distance. Use the torque tool for moments and the energy tool for work. Calorie factors marked th use the thermochemical definition; electrical kWh means energy, not power.
Current-input example
The result above uses these exact values. This snapshot is included when the page is printed so the output can be checked against the original measurements.
- Value
- 1
- From unit
- kWh
- To unit
- J
Primary result: Converted value: 3600000 J.
Before using the result
- Check the selected mode, units and input values before using the result.
- Read the assumptions and rounding rules; compare the worked example with your intended calculation.
- A numerical result does not supply missing context or change the stated limitations.
Limitations
Results use floating-point arithmetic and are displayed to ten significant digits. This tool does not measure an object, infer missing dimensions or supply material density. Keep unrounded values for further calculations when precision matters.
Frequently asked questions
Why are some units missing from the list?
Only units of the same physical quantity can be selected together. Choose another converter for a different quantity; a length cannot become an area without another dimension.
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