Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
1 BTU to kJ 5 BTU to kJ 25 BTU to kJ 500 BTU to kJ 900 BTU to kJ 1,100 BTU to kJ 1,200 BTU to kJ 2,000 BTU to kJ 4,000 BTU to kJ 10,000 BTU to kJ 20,000 BTU to kJ 100,000 BTU to kJ
Reverse Conversions
5 kJ to BTU 10 kJ to BTU 50 kJ to BTU 100 kJ to BTU 1,000 kJ to BTU 1,200 kJ to BTU 2,400 kJ to BTU 10,000 kJ to BTU 20,000 kJ to BTU 25,000 kJ to BTU 50,000 kJ to BTU 100,000 kJ to BTU
More Energy Conversions
100 J to cal 1 GJ to kWh 1 GJ to MJ 1 MJ to BTU 100 kJ to kcal 1 MJ to kWh 2 GJ to MJ 2 MJ to BTU 250 cal to J 1 kWh to cal

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Popular Conversions

Kilowatt-Hours to Megajoules Megajoules to Kilowatt-Hours Joules to Calories Kilocalories to Kilojoules British Thermal Units to Joules Watt-Hours to Joules

Common Benchmarks

100 W bulb for 1 hour 0.1 kWh
Microwave 10 minutes 0.17 kWh
Food calorie 4184 J
Match stick 1 kJ
Laptop full charge 200 kJ
1 kWh 3.6 MJ

Formula

kJ = BTU × 1.055056

Example

Example: convert 1000 British thermal units to kilojoules.

1000 BTU = 1055.056 kJ

Conversion table

British thermal units (BTU) kilojoules (kJ)
1 BTU 1.055056 kJ
2 BTU 2.110112 kJ
5 BTU 5.27528 kJ
10 BTU 10.55056 kJ
20 BTU 21.10112 kJ
50 BTU 52.7528 kJ
100 BTU 105.5056 kJ

Explanation

These are both units.

How to convert British thermal units to kilojoules

  1. Start with the value in British thermal units (BTU).
  2. Multiply it by 1.055056.
  3. The result is the measurement in kilojoules (kJ).

Example: 1000 BTU → 1055.056 kJ

Frequently Asked Questions

How much is 1000 British thermal units in kilojoules?

1000 British thermal units is about 1055.06 kilojoules.

How many kilojoules is 1 British thermal unit?

1 British thermal unit equals 1.055056 kilojoules.

How many British thermal units is 1 kilojoule?

1 kilojoule equals 0.947816987913 British thermal units.

What is the difference between British thermal units and kilojoules?

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 kilojoules 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 1.055056 kilojoules?

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