Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
50 BTU to J 250 BTU to J 500 BTU to J 810 BTU to J 1,000 BTU to J 1,080 BTU to J 2,160 BTU to J 2,500 BTU to J 9,000 BTU to J 25,000 BTU to J 50,000 BTU to J 100,000 BTU to J
Reverse Conversions
1 J to BTU 100 J to BTU 250 J to BTU 720 J to BTU 990 J to BTU 1,440 J to BTU 1,800 J to BTU 2,160 J to BTU 2,500 J to BTU 3,600 J to BTU 5,000 J to BTU 18,000 J to BTU
More Energy Conversions
1 GJ to kWh 1 GJ to MJ 1 MJ to BTU 100 J to cal 1 MJ to kWh 2 GJ to MJ 2 MJ to BTU 100 kJ to kcal 1 kWh to cal 10,000 J to kJ

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Common Benchmarks

Cup of coffee 5 kJ
Slice of bread 330 kJ
Gasoline liter 34 MJ
Phone battery 40 kJ
100 W bulb for 1 hour 0.1 kWh
Food calorie 4184 J

Formula

J = BTU × 1055.056

Example

Example: convert 900 British thermal units to joules.

900 BTU = 949550.4 J

Conversion table

British thermal units (BTU) joules (J)
1 BTU 1055.056 J
2 BTU 2110.112 J
5 BTU 5275.28 J
10 BTU 10550.56 J
20 BTU 21101.12 J
50 BTU 52752.8 J
100 BTU 105505.6 J

Explanation

These are both units.

How to convert British thermal units to joules

  1. Start with the value in British thermal units (BTU).
  2. Multiply it by 1055.056.
  3. The result is the measurement in joules (J).

Example: 900 BTU → 949550.4 J

Frequently Asked Questions

How much is 900 British thermal units in joules?

900 British thermal units equals 949550.4 joules.

How many joules is 1 British thermal unit?

1 British thermal unit equals 1055.056 joules.

How many British thermal units is 1 joule?

1 joule equals 0.000947816988 British thermal units.

What is the difference between British thermal units and joules?

Both measure energy in SI. The main difference is usually scale: some units are convenient for smaller values, while others are used to express larger values more practically.

Where are British thermal units and joules used?

They are used in physics and engineering to measure work, energy, and heat; the most practical unit depends on the magnitude.

Why does 1 British thermal unit equal 1055.056 joules?

Because the units are defined with a fixed relationship. To convert British thermal units to joules, multiply by that factor.