Joule to British Thermal Unit (IT)

Convert joule to british thermal unit (it) instantly. Type in either field — results update live.

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Energy Joule British Thermal Unit (IT)

1 joule = 0.0009478171 BTU (IT)

From

Format

Conversion table

Selected J values converted to Btu (IT) using the exact factor from this tool.

J	Btu (IT)
0.01	0.0000094782
0.1	0.0000947817
1	0.0009478171
2	0.0018956342
3	0.0028434514
5	0.0047390856
10	0.0094781712
20	0.0189563424
50	0.047390856
100	0.094781712
1,000	0.9478171203

How to convert

Exact conversion factors in both directions, plus a worked example.

1 J = 0.0009478171 Btu (IT)

1 Btu (IT) = 1055.05585262 J

To convert joule to british thermal unit (it), multiply by 0.0009478171.

To convert british thermal unit (it) to joule, multiply by 1055.05585262.

Example: convert 10 J to Btu (IT)

10 × 0.0009478171 = 0.0094781712 Btu (IT)

About these units

Short background on the units used in this conversion.

Joule (J)

The joule is the SI unit of energy — the work done when one newton moves an object one meter.

Joules quantify electricity bills (as kWh), food energy (as kcal), and scientific energy transfers.

British Thermal Unit (IT) (Btu (IT))

The British thermal unit (IT) is 1,055.05585262 joules — the heat to raise one pound of water by 1°F (International Table).

BTU rates HVAC heating and cooling capacity, natural-gas appliances, and US energy consumption.

Frequently asked questions

How many BTU (IT) are in one joule?

One joule equals 0.0009478171 BTU (IT). Multiply your joules value by 0.0009478171 to convert to BTU (IT).

What is the conversion formula?

Btu (IT) = J × 0.0009478171

The reverse is J = Btu (IT) × 1,055.05585262, using the same exact factors as this converter.

Is this Joule to British Thermal Unit (IT) converter private?

Yes. All calculations run locally in your browser. Nothing you type is sent to a server.

All joule conversions

Jump to any energy conversion starting from joule — including the reverse direction and every other unit in our dataset.

british thermal unit (it) (Btu (IT)) → joule (J)

joule (J) → kilojoule (kJ)joule (J) → megajoule (MJ)joule (J) → gigajoule (GJ)joule (J) → kilowatt-hour (kW·h)joule (J) → watt-hour (W·h)joule (J) → calorie (nutritional / food calorie) (Cal)joule (J) → kilocalorie (it) (kcal (IT))joule (J) → kilocalorie (thermochemical) (kcal (th))joule (J) → calorie (it) (cal (IT))joule (J) → calorie (thermochemical) (cal (th))joule (J) → british thermal unit (thermochemical) (Btu (th))joule (J) → foot-pound (ft·lbf)joule (J) → newton meter (N·m)joule (J) → horsepower hour (mechanical) (hp·h)joule (J) → horsepower (metric) hour (metric hp·h)joule (J) → millijoule (mJ)joule (J) → microjoule (µJ)joule (J) → nanojoule (nJ)joule (J) → attojoule (aJ)joule (J) → megaelectron-volt (MeV)joule (J) → kiloelectron-volt (keV)joule (J) → electron-volt (eV)joule (J) → erg joule (J) → gigawatt-hour (GW·h)joule (J) → megawatt-hour (MW·h)joule (J) → kilowatt-second (kW·s)joule (J) → watt-second (W·s)joule (J) → mega british thermal unit (it) (MBtu (IT))joule (J) → ton-hour (refrigeration) (ton·h)joule (J) → fuel oil equivalent @ kiloliter (kL oil eq)joule (J) → fuel oil equivalent @ barrel (us) (bbl oil eq)joule (J) → gigaton (tnt) (Gton)joule (J) → megaton (tnt) (Mton)joule (J) → kiloton (tnt) (kton)joule (J) → ton (explosives / tnt) (ton TNT)joule (J) → dyne centimeter (dyn·cm)joule (J) → gram-force meter (gf·m)joule (J) → gram-force centimeter (gf·cm)joule (J) → kilogram-force centimeter (kgf·cm)joule (J) → kilogram-force meter (kgf·m)joule (J) → kilopond meter (kp·m)joule (J) → pound-force foot (lbf·ft)joule (J) → pound-force inch (lbf·in)joule (J) → ounce-force inch (ozf·in)joule (J) → inch-pound (in·lbf)joule (J) → inch-ounce (in·ozf)joule (J) → poundal foot (pdl·ft)joule (J) → therm joule (J) → therm (ec)joule (J) → therm (us)joule (J) → hartree energy (Eh)joule (J) → rydberg constant (Ry)