Joules to British Thermal Units (J → BTU)
Formula
1 J = 0.0009478133944988911 BTUConversion Table
| J | BTU |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00094781 |
| 2.0000 | 0.0018956 |
| 3.0000 | 0.0028434 |
| 4.0000 | 0.0037913 |
| 5.0000 | 0.0047391 |
| 6.0000 | 0.0056869 |
| 7.0000 | 0.0066347 |
| 8.0000 | 0.0075825 |
| 9.0000 | 0.0085303 |
| 10.000 | 0.0094781 |
| 11.000 | 0.010426 |
| 12.000 | 0.011374 |
| 13.000 | 0.012322 |
| 14.000 | 0.013269 |
| 15.000 | 0.014217 |
| 16.000 | 0.015165 |
| 17.000 | 0.016113 |
| 18.000 | 0.017061 |
| 19.000 | 0.018008 |
| J | BTU |
|---|---|
| 20.000 | 0.018956 |
| 21.000 | 0.019904 |
| 22.000 | 0.020852 |
| 23.000 | 0.021800 |
| 24.000 | 0.022748 |
| 25.000 | 0.023695 |
| 26.000 | 0.024643 |
| 27.000 | 0.025591 |
| 28.000 | 0.026539 |
| 29.000 | 0.027487 |
| 30.000 | 0.028434 |
| 31.000 | 0.029382 |
| 32.000 | 0.030330 |
| 33.000 | 0.031278 |
| 34.000 | 0.032226 |
| 35.000 | 0.033173 |
| 36.000 | 0.034121 |
| 37.000 | 0.035069 |
| 38.000 | 0.036017 |
| 39.000 | 0.036965 |
| J | BTU |
|---|---|
| 40.000 | 0.037913 |
| 41.000 | 0.038860 |
| 42.000 | 0.039808 |
| 43.000 | 0.040756 |
| 44.000 | 0.041704 |
| 45.000 | 0.042652 |
| 46.000 | 0.043599 |
| 47.000 | 0.044547 |
| 48.000 | 0.045495 |
| 49.000 | 0.046443 |
| 50.000 | 0.047391 |
| 51.000 | 0.048338 |
| 52.000 | 0.049286 |
| 53.000 | 0.050234 |
| 54.000 | 0.051182 |
| 55.000 | 0.052130 |
| 56.000 | 0.053078 |
| 57.000 | 0.054025 |
| 58.000 | 0.054973 |
| 59.000 | 0.055921 |
| J | BTU |
|---|---|
| 60.000 | 0.056869 |
| 61.000 | 0.057817 |
| 62.000 | 0.058764 |
| 63.000 | 0.059712 |
| 64.000 | 0.060660 |
| 65.000 | 0.061608 |
| 66.000 | 0.062556 |
| 67.000 | 0.063503 |
| 68.000 | 0.064451 |
| 69.000 | 0.065399 |
| 70.000 | 0.066347 |
| 71.000 | 0.067295 |
| 72.000 | 0.068243 |
| 73.000 | 0.069190 |
| 74.000 | 0.070138 |
| 75.000 | 0.071086 |
| 76.000 | 0.072034 |
| 77.000 | 0.072982 |
| 78.000 | 0.073929 |
| 79.000 | 0.074877 |
Joules to British Thermal Units Conversion
Converting Joules (J) to British Thermal Units (BTU) is a common energy and power conversion. 1 J equals 0.000948 BTU. For example, 100 J is equal to 0.094781 BTU.
Quick Mental Math: Joules to British Thermal Units
1 BTU is about 1,055 joules, so 10,550 joules is about 10 BTU.
Why is converting Joules to British Thermal Units tricky?
joules to british thermal units mixes thermal units with rate units, so people often miss whether the value is energy or energy per hour.
Quick Reference Values
1 J = 0.000948 BTU. 5 J = 0.004739 BTU. 10 J = 0.009478 BTU. 25 J = 0.023695 BTU. 50 J = 0.047391 BTU. 100 J = 0.094781 BTU.
What is Joules?
Joules (J) is a unit of energy and power. The joule is the SI unit of energy defined as the work done when a force of one newton moves an object one meter in the direction of the force. It equals one kilogram meter squared per second squared (kg·m²/s²). This definition aligns with the International System of Units as standardized by the BIPM [bipm-si-brochure]. The joule is named after James Prescott Joule, a 19th-century physicist who studied energy conservation. It was officially adopted as a unit of energy by the CGPM in 1948 to unify energy measurement standards internationally [cgpm-resolutions]. Joules are used worldwide in physics, engineering, and electrical industries to quantify energy, work, and heat. Countries using the SI system, including those in Europe, Asia, and the Americas, rely on joules for scientific and industrial applications [nist-si-guide].
What is British Thermal Units?
British Thermal Units (BTU) is a unit of energy and power. The British Thermal Unit (BTU) measures energy and is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. One BTU equals approximately 1055.06 joules in the International System of Units (SI). This unit is standardized for heating and cooling system capacities and energy content calculations [nist-sp-811]. The BTU originated in the mid-19th century during the industrial revolution to quantify heat energy for steam engines and heating systems. It was standardized by engineering societies to unify thermal energy measurements in the United Kingdom and the United States [nist-sp-811]. BTU remains widely used in the United States, the United Kingdom, and Canada for HVAC system ratings and energy content in fuels. It is recognized by industry standards and energy regulations but is less common in countries using the SI system exclusively [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: joule, joul, jouls, juls, british thermal unit, btu unit, british therm unit, btu energy, british thermals unit. All of these refer to the Joules to British Thermal Units conversion.