Joules to BTU Converter

Joules to BTU Converter

BTU
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Kilojoules
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1 BTU = 1055.06 J · 1 kJ = 0.947817 BTU

How to convert joules to BTU

To convert joules to BTU, divide by 1055.06. For example, 10,550.6 J ÷ 1055.06 = 10 BTU. Going the other way, multiply BTU by 1055.06 to get joules.

To convert joules to kilojoules, divide by 1000. So 1055.06 J ÷ 1000 = 1.05506 kJ.

1 BTU = 1055.06 joules = 1.05506 kJ = 0.252164 kcal. BTU is used in the US for heating and cooling systems. Joules are the standard international unit of energy.

Joules to BTU conversion table

Joules (J) BTU Kilojoules (kJ)
1000 J0.948 BTU1 kJ
5000 J4.739 BTU5 kJ
10,550.6 J10 BTU10.551 kJ
50,000 J47.391 BTU50 kJ
100,000 J94.782 BTU100 kJ
500,000 J473.910 BTU500 kJ
3,600,000 J3412.14 BTU3600 kJ (1 kWh)

Frequently asked questions

How many joules is 1 BTU?
1 BTU = 1055.06 joules = 1.05506 kJ = 0.252164 kcal.
How many BTU is 1000 joules?
1000 joules = 0.948 BTU = 1 kJ. Calculation: 1000 ÷ 1055.06 = 0.948 BTU.
How many BTU is 1 kWh?
1 kWh = 3,600,000 J = 3412.14 BTU. Calculation: 3,600,000 ÷ 1055.06 = 3412.14 BTU.
How many joules is 5000 BTU?
5000 BTU = 5,275,300 joules = 5275.3 kJ. Calculation: 5000 × 1055.06 = 5,275,300 J.
What is BTU used for?
BTU is used in the US for rating the heating and cooling capacity of air conditioners, furnaces, and heat pumps. A typical window air conditioner is rated between 5000 and 12000 BTU.