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Convert joules to btu

1 joule equals 0.00094781712 british thermal units. Enter a value below to convert instantly.

1 J
0.00094781712 BTU

Multiply the number of joules by 0.000947817120313 to get british thermal units. How this is calculated

Copy link puts your number after the #, which browsers never send to a server — but the link itself carries it, so anyone you send it to sees the value. Save keeps the unit pair in this browser only; clear it any time from your saved list.

Need the other direction? Convert british thermal unit to joule →

Formula

Multiply the number of joules by 0.000947817120313 to get british thermal units.

Step by step

  1. Start with 1 J.
  2. Multiply by the conversion factor 0.000947817120313.
  3. 1 × 0.000947817120313 = 0.00094781712 BTU.

Joules to British Thermal Units conversion table

Joules (J) British Thermal Units (BTU)
1 0.00094781712
2 0.0018956342
5 0.0047390856
10 0.0094781712
20 0.018956342
50 0.047390856
100 0.094781712
500 0.47390856
1,000 0.94781712

Convert Joule to other energy units

1 J expressed in every other energy unit on this site.

  • Kilojoule kJ 0.001
  • Megajoule MJ 0.000001
  • Gigajoule GJ 1e-9
  • Millijoule mJ 1,000
  • Microjoule µJ 1,000,000
  • Nanojoule nJ 1,000,000,000
  • Attojoule aJ 1e+18
  • Erg erg 10,000,000
  • Calorie (thermochemical) cal 0.23900574
  • Kilocalorie kcal 0.00023900574
  • Calorie (IT) cal(IT) 0.2388459
  • Kilocalorie (IT) kcal(IT) 0.0002388459
  • Megacalorie Mcal 2.3900574e-7
  • Watt-hour Wh 0.00027777778
  • Kilowatt-hour kWh 2.7777778e-7
  • Megawatt-hour MWh 2.7777778e-10
  • Gigawatt-hour GWh 2.7777778e-13
  • Watt-second W·s 1
  • Kilowatt-second kW·s 0.001
  • Horsepower-hour hp·h 3.7250614e-7
  • British Thermal Unit BTU 0.00094781712
  • BTU (thermochemical) BTU(th) 0.00094845141
  • MBTU (thousand BTU) MBTU 9.4781712e-7
  • MMBTU (million BTU) MMBTU 9.4781712e-10
  • Therm (US) thm (US) 9.4804343e-9
  • Therm (EC) thm (EC) 9.4781339e-9
  • Ton-hour (refrigeration) ton·h 7.8984761e-8
  • Foot-pound ft·lbf 0.73756215
  • Inch-pound in·lbf 8.8507458
  • Foot-poundal ft·pdl 23.73036
  • Kilogram-force Meter kgf·m 0.10197162
  • Gram-force Centimeter gf·cm 10,197.162
  • Gram-force Meter gf·m 101.97162
  • Kilogram-force Centimeter kgf·cm 10.197162
  • Ounce-force Inch ozf·in 141.61193
  • Horsepower-hour (metric) PS·h 3.7767267e-7
  • Electronvolt eV 6.2415091e+18
  • Kiloelectronvolt keV 6.2415091e+15
  • Megaelectronvolt MeV 6,241,509,100,000
  • Gigaelectronvolt GeV 6,241,509,100
  • Hartree Eh 2.2937123e+17
  • Rydberg Ry 4.5874246e+17
  • Ton of TNT tTNT 2.3900574e-10
  • Kiloton of TNT ktTNT 2.3900574e-13
  • Megaton of TNT MtTNT 2.3900574e-16
  • Tonne of Oil Equivalent toe 2.388459e-11
  • Barrel of Oil Equivalent bboe 1.6345576e-10
  • Gigaton of TNT GtTNT 2.3900574e-19
  • Fuel Oil Equivalent (kiloliter) FOE (kL) 2.487709e-11
  • Fuel Oil Equivalent (US barrel) FOE (bbl) 1.5666399e-10

About the joule

The joule (J) is a SI unit of energy.

About the british thermal unit

The british thermal unit (BTU) is a Imperial unit of energy.

Where this conversion is used

Converting joules to british thermal units comes up when nutrition labels, electricity bills, heating, and physics.

Related conversions

Frequently asked questions

How many british thermal units are in a joule?

One joule equals 0.00094781712 british thermal units.

How do you convert joules to british thermal units?

Multiply the number of joules by 0.000947817120313 to get british thermal units.

What is 1 british thermal unit in joules?

One british thermal unit equals 1,055.0559 joules.

When would I convert joules to british thermal units?

This conversion is common when nutrition labels, electricity bills, heating, and physics.

Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.