704 Btu to Joules

704 Btu ≈ 7.4276e+5 J

Calculation: J = 704 Btu × 1055.06 ≈ 7.4276e+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: 704 Btu × 1055.06 = 742760 J

Reverse Conversion

To convert Joules back to Btu:

  • Remember, 1 joule equals 0.000947817 Btu.
  • To convert 742760 J to Btu, multiply 742760 x 0.000947817, resulting in 704 Btu.

704 Btu is also equal to:

  • 742.76 kilojoule
  • 0.20632 kilowatt hour
  • 177.52 calorie (nutritional)
  • 206.32 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 704 Btu in Joules?

704 Btu equals 742760 Joules. This is calculated by multiplying 704 by the conversion factor 1055.06.

What does 704 Btu look like in Joules?

704 Btu (742760 Joules) is heating a cup of water — a kettle uses about 300 Btu.

How do you calculate 704 Btu to Joules?

Multiply 704 by the conversion factor 1055.06. The calculation is 704 × 1055.06 = 742760 Joules. This factor is defined by international measurement standards.

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704 Btu = 742759 Joules
704 Btu = 742759 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.