Online calculator to convert British Thermal Units to joules (BTU to J) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Energy units.
Conversion Calculator
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Convert BTU to J
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Conversion Definitions
The following is a list of definitions relating to conversions between BTU and joules.
What is a British Thermal Unit (BTU)?
A British Thermal Unit is a unit of energy in the Imperial System. The symbol for British Thermal Unit is BTU or Btu. There are 0.00094782 BTU in a joule. A BTU is measured as the quantity of heat required to raise the temperature of 1 pound of water by 1°F.
What is a joule (J)?
A joule is a unit of energy in the International System of Units (SI). The symbol for joule is J. There are 1,055.05585262 joules in a BTU.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from BTU to J is:
J = BTU x 1,055.05585262
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from British Thermal Units to joules (BTU to J).
BTU to Joule Conversion Example
Task: Convert 4 BTUs to joules (show work) Formula: BTU x 1,055.05585262 = J Calculations: 4 BTU x 1,055.05585262 = 4,220.22 J Result: 4 BTU is equal to 4,220.22 J
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from BTUs to joules.
BTUs to Joules Conversion Chart
| British Thermal Units (BTU) | joules (J) |
|---|---|
| 1 BTU | 1,055.06 J |
| 2 BTU | 2,110.11 J |
| 3 BTU | 3,165.17 J |
| 4 BTU | 4,220.22 J |
| 5 BTU | 5,275.28 J |
| 6 BTU | 6,330.34 J |
| 7 BTU | 7,385.39 J |
| 8 BTU | 8,440.45 J |
| 9 BTU | 9,495.5 J |
| 10 BTU | 10,550.56 J |
| 20 BTU | 21,101.12 J |
| 30 BTU | 31,651.68 J |
| 40 BTU | 42,202.23 J |
| 50 BTU | 52,752.79 J |
| 75 BTU | 79,129.19 J |
| 100 BTU | 105,505.59 J |
| 250 BTU | 263,763.96 J |
| 500 BTU | 527,527.93 J |
| 750 BTU | 791,291.89 J |
| 1,000 BTU | 1,055,055.85 J |
| 2,500 BTU | 2,637,639.63 J |
| 5,000 BTU | 5,275,279.26 J |
| 7,500 BTU | 7,912,918.89 J |
| 10,000 BTU | 10,550,558.53 J |
| 25,000 BTU | 26,376,396.32 J |
| 50,000 BTU | 52,752,792.63 J |
| 75,000 BTU | 79,129,188.95 J |
| 100,000 BTU | 105,505,585.26 J |
| 250,000 BTU | 263,763,963.16 J |
Related Units
This table provides a summary of the Energy units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| calories (thermochemical) | cal | International System of Units (SI) |
| kilocalories | kcal | International System of Units (SI) |
| British Thermal Unit | BTU or Btu | Imperial System |
| joules | J | International System of Units (SI) |
| kilojoules | kJ | International System of Units (SI) |
| megajoules | MJ | International System of Units (SI) |
| gigajoules | GJ | International System of Units (SI) |
| terajoules | TJ | International System of Units (SI) |
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