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BTU to Joules Converter

1 BTU = 1,055.055853 J. Type any value to convert BTU to joules.

1 BTU = 1,055.055853 J

Formula: J = BTU × 1,055.055853

Common values
Decimals
In every unit 12 units
Joule (J) 1,055.055853 J
Kilojoule (kJ) 1.055055853 kJ
Megajoule (MJ) 0.001055055853 MJ
Calorie (cal) 252.1644007 cal
Kilocalorie (kcal) 0.2521644007 kcal
Watt-hour (Wh) 0.2930710702 Wh
Kilowatt-hour (kWh) 0.0002930710702 kWh
Electronvolt (eV) 6.585140678 × 10²¹ eV
British thermal unit (BTU) 1 BTU
Therm (thm) 0.00001000238767 thm
Foot-pound (ft·lbf) 778.1692623 ft·lbf
Erg (erg) 10,550,558,530 erg

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If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Calculated in your browser – nothing you type is sent anywhere. Privacy details

BTU to joules table

Formula: J = BTU × 1,055.055853

British thermal unit (BTU)Joule (J)
0.1 BTU105.5055853 J
0.25 BTU263.7639632 J
0.5 BTU527.5279263 J
1 BTU1,055.055853 J
2 BTU2,110.111705 J
3 BTU3,165.167558 J
4 BTU4,220.22341 J
5 BTU5,275.279263 J
6 BTU6,330.335116 J
7 BTU7,385.390968 J
8 BTU8,440.446821 J
9 BTU9,495.502674 J
10 BTU10,550.55853 J
12 BTU12,660.67023 J
15 BTU15,825.83779 J
20 BTU21,101.11705 J
25 BTU26,376.39632 J
30 BTU31,651.67558 J
40 BTU42,202.2341 J
50 BTU52,752.79263 J
60 BTU63,303.35116 J
75 BTU79,129.18895 J
100 BTU105,505.5853 J
150 BTU158,258.3779 J
200 BTU211,011.1705 J
250 BTU263,763.9632 J
500 BTU527,527.9263 J
1,000 BTU1,055,055.853 J

How to use: BTU to Joules

  1. 1 Type the value in BTU.
  2. 2 The result in joules appears at once – or type in the joules field to convert back.
  3. 3 Pick a common value, round to fewer decimals or swap the units with one click.
  4. 4 Copy the result, or open “In every unit” to see the value in all units of energy.

About this tool

British thermal unit (BTU) is a unit of energy (imperial and US customary); 1 BTU = 1,055.055853 J. Joule (J) is a unit of energy (SI).

To convert BTU to joules, multiply the value by 1,055.055853 (J = BTU × 1,055.055853). Example: 100 BTU = 105,505.5853 J.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

How do I convert BTU to joules?

To convert BTU to joules, multiply the value by 1,055.055853: J = BTU × 1,055.055853. For example 100 BTU = 105,505.5853 J.

What is 1 BTU in joules?

1 BTU = 1,055.055853 J. The other way round, 1 J = 0.0009478171203 BTU.

How exact is the result?

The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.

Can I convert other units of energy here?

Yes – choose any of the 12 units of energy in the From and To lists, or switch to another measurement at the top.

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