What does the Energy Converter do?

Convert Joule, kWh, Wh, MWh, GWh, calorie.

How do I use the Energy Converter?

Enter the requested values using the units shown, choose the options that match your case, calculate the result and review the displayed formula or working before using the answer.

Which formula does the Energy Converter use?

The formula or calculation method is shown on the page together with the result. Review the displayed steps and units for the exact method used by this tool.

How should I check a Energy Converter result?

Verify the input values and units first, then compare the result with the displayed calculation steps, assumptions, warnings and any cited reference that applies to your use case.

What are the limitations of the Energy Converter?

The result depends on the values, units and assumptions entered. Treat it as a calculation aid and use the applicable official document, manufacturer data or qualified professional review when the decision requires one.

Where can I find related tools?

Use the related-tools links on the page or browse the Unit Converters collection for another calculation method or supporting tool.

Back

Energy Converter

Joule, kWh, Wh, MWh, GWh, calorie

Convert units

Instant calculation in your browser. No sign-up or upload.

Display precision

From value

Converted result3,600,000

1 kWh = 3,600,000 J

Calculation working

Result = input × source factor ÷ target factor
1 × 3,600,000 ÷ 1 = 3,600,000 J
Factors refer to the same base quantity. Rounding is applied to the display, not intermediate calculations.

Display: 10 significant digits. More digits do not make the original measurement more accurate.

Try a practical example

Batch conversion

One value per line, up to 200. Uses the selected kWh → J units. Invalid rows stay visible in the results and CSV.

Compare all units

Using this energy converter

Compare electricity consumption, battery energy and generation records in joules or watt-hours.

Energy accumulates over time. 1 kWh is the energy associated with 1 kW maintained for one hour, and equals 3.6 million joules.

Check before using the result

kW is power; kWh is energy. A unit conversion cannot turn one into the other without operating duration.
Calorie here is the thermochemical small calorie (4.184 J). A food Calorie is a kilocalorie, which is 1,000 small calories.

Definitions and method: NIST: unit conversion factors and rounding. Calculations use double-precision arithmetic; the display precision can be adjusted above.

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