British Thermal Units to Joules (BTU → J)
Formula
1 BTU = 1055.06 JConversion Table
| BTU | J |
|---|---|
| 0 | 0 |
| 1.0000 | 1,055.1 |
| 2.0000 | 2,110.1 |
| 3.0000 | 3,165.2 |
| 4.0000 | 4,220.2 |
| 5.0000 | 5,275.3 |
| 6.0000 | 6,330.4 |
| 7.0000 | 7,385.4 |
| 8.0000 | 8,440.5 |
| 9.0000 | 9,495.5 |
| 10.000 | 10,551 |
| 11.000 | 11,606 |
| 12.000 | 12,661 |
| 13.000 | 13,716 |
| 14.000 | 14,771 |
| 15.000 | 15,826 |
| 16.000 | 16,881 |
| 17.000 | 17,936 |
| 18.000 | 18,991 |
| 19.000 | 20,046 |
| BTU | J |
|---|---|
| 20.000 | 21,101 |
| 21.000 | 22,156 |
| 22.000 | 23,211 |
| 23.000 | 24,266 |
| 24.000 | 25,321 |
| 25.000 | 26,377 |
| 26.000 | 27,432 |
| 27.000 | 28,487 |
| 28.000 | 29,542 |
| 29.000 | 30,597 |
| 30.000 | 31,652 |
| 31.000 | 32,707 |
| 32.000 | 33,762 |
| 33.000 | 34,817 |
| 34.000 | 35,872 |
| 35.000 | 36,927 |
| 36.000 | 37,982 |
| 37.000 | 39,037 |
| 38.000 | 40,092 |
| 39.000 | 41,147 |
| BTU | J |
|---|---|
| 40.000 | 42,202 |
| 41.000 | 43,257 |
| 42.000 | 44,313 |
| 43.000 | 45,368 |
| 44.000 | 46,423 |
| 45.000 | 47,478 |
| 46.000 | 48,533 |
| 47.000 | 49,588 |
| 48.000 | 50,643 |
| 49.000 | 51,698 |
| 50.000 | 52,753 |
| 51.000 | 53,808 |
| 52.000 | 54,863 |
| 53.000 | 55,918 |
| 54.000 | 56,973 |
| 55.000 | 58,028 |
| 56.000 | 59,083 |
| 57.000 | 60,138 |
| 58.000 | 61,193 |
| 59.000 | 62,249 |
| BTU | J |
|---|---|
| 60.000 | 63,304 |
| 61.000 | 64,359 |
| 62.000 | 65,414 |
| 63.000 | 66,469 |
| 64.000 | 67,524 |
| 65.000 | 68,579 |
| 66.000 | 69,634 |
| 67.000 | 70,689 |
| 68.000 | 71,744 |
| 69.000 | 72,799 |
| 70.000 | 73,854 |
| 71.000 | 74,909 |
| 72.000 | 75,964 |
| 73.000 | 77,019 |
| 74.000 | 78,074 |
| 75.000 | 79,130 |
| 76.000 | 80,185 |
| 77.000 | 81,240 |
| 78.000 | 82,295 |
| 79.000 | 83,350 |
British Thermal Units to Joules Conversion
Converting British Thermal Units (BTU) to Joules (J) is a common energy and power conversion. 1 BTU equals 1,055.06 J. For example, 100 BTU is equal to 105,506 J.
Quick Mental Math: British Thermal Units to Joules
0.01896 british thermal units is 20 joules, so use that as the mental anchor.
Why is converting British Thermal Units to Joules tricky?
british thermal units to joules mixes thermal units with rate units, so people often miss whether the value is energy or energy per hour.
Quick Reference Values
1 BTU = 1,055.06 J. 5 BTU = 5,275.3 J. 10 BTU = 10,550.6 J. 25 BTU = 26,376.5 J. 50 BTU = 52,753 J. 100 BTU = 105,506 J.
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].
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].
Common Misspellings
People often search for this conversion using these alternate spellings: british thermal unit, btu unit, british therm unit, btu energy, british thermals unit, joule, joul, jouls, juls. All of these refer to the British Thermal Units to Joules conversion.