Convert BTU to Kilojoules

Convert btu to kilojoules (BTU to kJ) instantly. Free, accurate btu to kilojoules calculator with conversion formula and chart.

From

To1.055055853

1 BTU = 1.055055853 kJ

Conversion formula

1 btu = 1.055055853 kilojoules

Multiply a value in btu by 1.055055853 to get kilojoules; divide by the same number to convert back.

BTU to Kilojoules conversion table

BTU (BTU)	Kilojoules (kJ)
1 BTU	1.05506 kJ
2 BTU	2.11011 kJ
5 BTU	5.27528 kJ
10 BTU	10.5506 kJ
25 BTU	26.3764 kJ
50 BTU	52.7528 kJ
100 BTU	105.506 kJ
500 BTU	527.528 kJ
1,000 BTU	1,055.06 kJ

For example, 12 btu is 12.6607 kilojoules.
A value of 75 btu converts to 79.1292 kilojoules.
Going the other way, 1 kilojoule is 0.947817 btu.

More energy conversions

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About BTU to Kilojoules

Easily convert btu (BTU) to kilojoules (kJ) with this free, instant calculator. Enter a value in btu to see the equivalent in kilojoules right away — accurate and calculated in your browser.

How to use BTU to Kilojoules

1
Enter the number of btu you want to convert.
2
The equivalent value in kilojoules appears instantly.
3
Switch units anytime to convert in either direction.

How to convert BTU to Kilojoules

Enter any value in btu (BTU) and this calculator instantly shows the equivalent in kilojoules (kJ) using the exact internationally agreed conversion factor — no rounding tricks, no ads in the way, and it works offline once the page is loaded.

Use the swap button to convert in the other direction (kilojoules to btu), or switch to any other energy unit from the dropdown — the same page handles joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, btu, electronvolts.

Frequently Asked Questions

How do you convert btu to kilojoules?

Enter your value in btu and the converter instantly shows the result in kilojoules using the exact conversion factor.

Is the btu to kilojoules converter free?

Yes — it's completely free, instant and requires no sign-up.

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