How do I convert kWh to kJ?

Use the formula shown above or enter a value to see kWh converted to kJ instantly.

What is the formula for kWh to kJ?

The converter calculates kJ by applying the category-specific conversion factor for Energy.

When should I use kWh vs kJ?

kWh and kJ are both part of the Energy category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Energy Conversion Guide

Convert kWh to kJ

Use the live converter below to translate between Kilowatt Hour (kWh) and Kilojoule (kJ). Scroll further for quick examples, formula tips, and related units.

Formula insight: Most unit conversions use a simple multiplication or division by a conversion factor. The calculator shows the exact formula used.

Convert

kWh → kJ

Kilowatt Hour

kWh

Kilojoule

3,600

Rounded result (4 decimals max)

Formula

1 kWh = 3,600 kJ

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

Results update as you type. Swap the direction to convert back from kJ to kWh.

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kWh to kJ quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Kilowatt Hour (kWh)	Kilojoule (kJ)
0.25 kWh	900 kJ
0.5 kWh	1,800 kJ
1 kWh	3,600 kJ
2 kWh	7,200 kJ
5 kWh	18,000 kJ
10 kWh	36,000 kJ
25 kWh	90,000 kJ
100 kWh	360,000 kJ

kJ back to kWh

Keep the reciprocal handy when double-checking calculations or undoing a conversion.

Kilojoule (kJ)	Kilowatt Hour (kWh)
0.25 kJ	0.0001 kWh
0.5 kJ	0.0001 kWh
1 kJ	0.0003 kWh
2 kJ	0.0006 kWh
5 kJ	0.0014 kWh
10 kJ	0.0028 kWh
25 kJ	0.0069 kWh
100 kJ	0.0278 kWh

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Compare all energy conversion guide

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