kWh to J
Convert kWh to J. Enter a value and view the calculation method, examples and conversion table.
Energy converter
kWh to J formula
The calculator converts the input to the category's reference unit, then divides by the target unit's factor.
Result = input × source factor ÷ target factor
1 × (3,600,000 ÷ 1) = 3,600,000
Worked example: 1 Kilowatt hours = 3,600,000 Joules
Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
kWh to J conversion table
| Kilowatt hours | Joules |
|---|---|
| 1 Kilowatt hours | 3,600,000 Joules |
| 2 Kilowatt hours | 7,200,000 Joules |
| 5 Kilowatt hours | 18,000,000 Joules |
| 10 Kilowatt hours | 36,000,000 Joules |
| 20 Kilowatt hours | 72,000,000 Joules |
| 50 Kilowatt hours | 180,000,000 Joules |
| 100 Kilowatt hours | 360,000,000 Joules |
| 250 Kilowatt hours | 900,000,000 Joules |
| 500 Kilowatt hours | 1,800,000,000 Joules |
| 1,000 Kilowatt hours | 3,600,000,000 Joules |
Definitions and assumptions
Energy factors are expressed relative to joules. This tool uses the thermochemical calorie (4.184 J) and the International Table British thermal unit. Energy and torque can share dimensions but describe different physical quantities.
How to use this calculator
- Enter the value you want to convert.
- Choose the source and target units, then adjust the display precision if needed.
- Read the result. Select Convert to open a page for this value, or use the table below.
Frequently asked questions
how many J is 1 kWh?
1 Kilowatt hours = 3,600,000 Joules. Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
how to convert kWh to J?
The calculator converts the input to the category's reference unit, then divides by the target unit's factor. 1 × 3,600,000 ≈ 3,600,000 Joules. Use the source and target factors shown in the formula. The worked example uses the value on this page, and the table provides other common values.
Are all calories identical?
No. Several historical calorie definitions exist. This tool uses the thermochemical calorie of exactly 4.184 joules; a kilocalorie is 1000 of these calories.
Why is the displayed result rounded?
Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
What input range can I use?
This calculator accepts non-negative values up to 1 trillion, with up to 8 decimal places. It does not calculate signed vectors or calendar date intervals.
Why is a unit unavailable?
A conversion is unavailable when a verified unit definition or a current exchange-rate value has not been configured. The tool does not invent a coefficient.
Sources and methodology
Methods and sources · Content revised
Report a problem