318 Btu to Joules

318 Btu ≈ 3.3551e+5 J

Calculation: J = 318 Btu × 1055.06 ≈ 3.3551e+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: 318 Btu × 1055.06 = 335510 J

Reverse Conversion

To convert Joules back to Btu:

  • Remember, 1 joule equals 0.000947817 Btu.
  • To convert 335510 J to Btu, multiply 335510 x 0.000947817, resulting in 318 Btu.

318 Btu is also equal to:

  • 335.51 kilojoule
  • 0.093197 kilowatt hour
  • 80.188 calorie (nutritional)
  • 93.197 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 318 Btu in Joules?

318 Btu equals 335510 Joules. This is calculated by multiplying 318 by the conversion factor 1055.06.

What does 318 Btu look like in Joules?

318 Btu (335510 Joules) is heating a cup of water — a kettle uses about 300 Btu.

How do you calculate 318 Btu to Joules?

Multiply 318 by the conversion factor 1055.06. The calculation is 318 × 1055.06 = 335510 Joules. This factor is defined by international measurement standards.

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318 Btu = 335508 Joules
318 Btu = 335508 Joules — conversion chart

Nearby Conversions

268 Btu282800 Joules 273 Btu288000 Joules 278 Btu293300 Joules 283 Btu298600 Joules 288 Btu303900 Joules 293 Btu309100 Joules 298 Btu314400 Joules 303 Btu319700 Joules 308 Btu325000 Joules 313 Btu330200 Joules 323 Btu340800 Joules 328 Btu346100 Joules 333 Btu351300 Joules 338 Btu356600 Joules 343 Btu361900 Joules 348 Btu367200 Joules 353 Btu372400 Joules 358 Btu377700 Joules 363 Btu383000 Joules 368 Btu388300 Joules

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.