120 Btu to Joules

120 Btu ≈ 1.2661e+5 J

Calculation: J = 120 Btu × 1055.06 ≈ 1.2661e+5 J

Btu to Joule Converter

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How to Convert Btu to Joule

1 Btu = 1055.06 Joules

Joule = Btu × 1055.06

Example: 120 Btu × 1055.06 = 126610 J

Reverse Conversion

To convert Joules back to Btu:

  • Remember, 1 joule equals 0.000947817 Btu.
  • To convert 126610 J to Btu, multiply 126610 x 0.000947817, resulting in 120 Btu.

120 Btu is also equal to:

  • 126.61 kilojoule
  • 0.035169 kilowatt hour
  • 30.26 calorie (nutritional)
  • 35.169 watt hour
About these units

Btu: British thermal unit (IT) — legacy heat unit based on heating water.

Joule: SI unit of energy: 1 J = 1 N·m = 1 kg·m²·s⁻².

Frequently Asked Questions

How much is 120 Btu in Joules?

120 Btu equals 126610 Joules. This is calculated by multiplying 120 by the conversion factor 1055.06.

What does 120 Btu look like in Joules?

120 Btu (126610 Joules) is heating a cup of water — a kettle uses about 300 Btu.

How do you calculate 120 Btu to Joules?

Multiply 120 by the conversion factor 1055.06. The calculation is 120 × 1055.06 = 126610 Joules. This factor is defined by international measurement standards.

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120 Btu = 126607 Joules
120 Btu = 126607 Joules — conversion chart

For general conversions between Btu and Joules, see the Btu to Joules converter.

Also convert Btu to:

Conversion factors verified against NIST, BIPM, ISO 80000-4 1 cal_IT = 4.1868 J by definition (BIPM/ITS-90). Last reviewed: April 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.