How many Joule are in one British thermal unit?

One British thermal unit equals 1055.055853 J. Enter any amount above to get an exact figure for your own value.

Is this converter accurate?

Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.

Do you upload the numbers I enter?

No. The British thermal unit to Joule conversion runs entirely in your browser tab, and nothing you type is sent to a server.

Does it work on my phone?

Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.

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British thermal unit to Joule

Convert British thermal unit to Joule and get the exact value instantly.

British thermal unit (BTU)Joule (J)1055.055853

1 BTU = 1055.055853 J

Related conversions

British thermal unit → Kilojoule British thermal unit → Megajoule British thermal unit → Gigajoule British thermal unit → Calorie British thermal unit → Kilocalorie British thermal unit → Watt hour British thermal unit → Kilowatt hour British thermal unit → Electronvolt

About this conversion

To convert British thermal unit to Joule, multiply the number of British thermal unit by 1055.055853.

Energy shows up as joules, calories, kilowatt-hours or BTU depending on the field (nutrition, an electricity bill, heating or physics), so a conversion makes the numbers comparable.

Conversion table

British thermal unit (BTU)	Joule (J)
1 BTU	1055.055853 J
2 BTU	2110.111705 J
5 BTU	5275.279263 J
10 BTU	10550.55853 J
100 BTU	105505.5853 J

How to use this converter

Enter your British thermal unit value
Type any number into the British thermal unit field. It starts at 1 so you can read the rate straight away.
Read the Joule result
The amount in Joule updates as you type, so there is no button to press and nothing to wait for.
Swap or keep exploring
Use the swap control to flip the direction, or pick a related conversion from the list below.

Frequently asked

How many Joule are in one British thermal unit?: One British thermal unit equals 1055.055853 J. Enter any amount above to get an exact figure for your own value.
Is this converter accurate?: Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
Do you upload the numbers I enter?: No. The British thermal unit to Joule conversion runs entirely in your browser tab, and nothing you type is sent to a server.
Does it work on my phone?: Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.

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