Kilowatt Hours to Joules Converter

Kilowatt Hours to Joules Converter

Joules
—
Megajoules
—
1 kWh = 3,600,000 joules · 1 kWh = 3.6 megajoules

How to convert kilowatt hours to joules

To convert kilowatt hours to joules, multiply by 3,600,000. For example, 2 kWh × 3,600,000 = 7,200,000 joules. To convert to megajoules, multiply by 3.6 instead.

Going the other way — to convert joules to kWh — divide by 3,600,000. So 10,000,000 J ÷ 3,600,000 = 2.778 kWh.

1 kWh = 3.6 megajoules = 3,600,000 joules. Kilowatt hours are used for measuring electricity consumption. Joules are the SI unit of energy used in physics and science.

Kilowatt hours to joules conversion table

Kilowatt Hours (kWh) Joules (J) Megajoules (MJ)
0.1 kWh360,000 J0.36 MJ
0.5 kWh1,800,000 J1.8 MJ
1 kWh3,600,000 J3.6 MJ
2 kWh7,200,000 J7.2 MJ
5 kWh18,000,000 J18 MJ
10 kWh36,000,000 J36 MJ
50 kWh180,000,000 J180 MJ
100 kWh360,000,000 J360 MJ

Frequently asked questions

How many joules is 1 kWh?
1 kWh = 3,600,000 joules = 3.6 megajoules. This comes from 1000 watts × 3600 seconds = 3,600,000 joules.
How many kWh is 1 megajoule?
1 megajoule = 0.27778 kWh. Calculation: 1,000,000 ÷ 3,600,000 = 0.2778 kWh.
What does kWh mean?
kWh stands for kilowatt hour — the energy used by a 1000-watt device running for 1 hour. It is the standard unit on electricity bills worldwide.
How many joules is 10 kWh?
10 kWh = 36,000,000 joules = 36 megajoules. This is roughly the daily electricity consumption of an average home.
How many kWh is 1 billion joules?
1 billion joules = 277.778 kWh. Calculation: 1,000,000,000 ÷ 3,600,000 = 277.78 kWh.