Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
1 kWh to J 5 kWh to J 10 kWh to J 25 kWh to J 180 kWh to J 248 kWh to J 360 kWh to J 450 kWh to J 500 kWh to J 1,000 kWh to J 2,500 kWh to J 25,000 kWh to J
Reverse Conversions
5 J to kWh 100 J to kWh 203 J to kWh 248 J to kWh 250 J to kWh 270 J to kWh 360 J to kWh 450 J to kWh 2,250 J to kWh 2,500 J to kWh 5,000 J to kWh 50,000 J to kWh
More Energy Conversions
1 MJ to BTU 100 J to cal 1 GJ to kWh 1 GJ to MJ 2 MJ to BTU 100 kJ to kcal 1 MJ to kWh 2 GJ to MJ 10 BTU to J 250 cal to J

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Popular Conversions

Kilowatt-Hours to Megajoules Megajoules to Kilowatt-Hours Joules to Calories Kilocalories to Kilojoules British Thermal Units to Joules Watt-Hours to Joules

Common Benchmarks

1 kWh 3.6 MJ
AA battery 10 kJ
Slice of bread 330 kJ
100 W bulb for 1 hour 0.1 kWh
Match stick 1 kJ
Phone battery 40 kJ

Formula

J = kWh × 3600000

Example

Example: convert 225 kilowatt-hours to joules.

225 kWh = 810000000 J

Conversion table

kilowatt-hours (kWh) joules (J)
1 kWh 3600000 J
2 kWh 7200000 J
5 kWh 18000000 J
10 kWh 36000000 J
20 kWh 72000000.00000001 J
50 kWh 180000000 J
100 kWh 360000000 J

Explanation

These are both units.

How to convert kilowatt-hours to joules

  1. Start with the value in kilowatt-hours (kWh).
  2. Multiply it by 3600000.
  3. The result is the measurement in joules (J).

Example: 225 kWh → 810000000 J

Frequently Asked Questions

How much is 225 kilowatt-hours in joules?

225 kilowatt-hours equals 810000000 joules.

What is a kilowatt-hour?

A kilowatt-hour is a unit of energy.

What is a joule?

A joule is a unit of energy.

When are kilowatt-hours used?

It is used when working with energy measurements.

When are joules used?

It is used when working with energy measurements.

Why do some conversions produce very small or very large numbers?

The result can look tiny or huge because the units are meant for very different scales. A joule is used for everyday scales, while a kilowatt-hour is used for much larger scales. That’s why 1 kilowatt-hour equals 3,600,000 joules.