Foot-Pounds to Kilojoules (ft⋅lbf → kJ)
Formula
1 ft⋅lbf = 0.001355818 kJConversion Table
| ft⋅lbf | kJ |
|---|---|
| 0 | 0 |
| 1.0000 | 0.0013558 |
| 2.0000 | 0.0027116 |
| 3.0000 | 0.0040675 |
| 4.0000 | 0.0054233 |
| 5.0000 | 0.0067791 |
| 6.0000 | 0.0081349 |
| 7.0000 | 0.0094907 |
| 8.0000 | 0.010847 |
| 9.0000 | 0.012202 |
| 10.000 | 0.013558 |
| 11.000 | 0.014914 |
| 12.000 | 0.016270 |
| 13.000 | 0.017626 |
| 14.000 | 0.018981 |
| 15.000 | 0.020337 |
| 16.000 | 0.021693 |
| 17.000 | 0.023049 |
| 18.000 | 0.024405 |
| 19.000 | 0.025761 |
| ft⋅lbf | kJ |
|---|---|
| 20.000 | 0.027116 |
| 21.000 | 0.028472 |
| 22.000 | 0.029828 |
| 23.000 | 0.031184 |
| 24.000 | 0.032540 |
| 25.000 | 0.033895 |
| 26.000 | 0.035251 |
| 27.000 | 0.036607 |
| 28.000 | 0.037963 |
| 29.000 | 0.039319 |
| 30.000 | 0.040675 |
| 31.000 | 0.042030 |
| 32.000 | 0.043386 |
| 33.000 | 0.044742 |
| 34.000 | 0.046098 |
| 35.000 | 0.047454 |
| 36.000 | 0.048809 |
| 37.000 | 0.050165 |
| 38.000 | 0.051521 |
| 39.000 | 0.052877 |
| ft⋅lbf | kJ |
|---|---|
| 40.000 | 0.054233 |
| 41.000 | 0.055589 |
| 42.000 | 0.056944 |
| 43.000 | 0.058300 |
| 44.000 | 0.059656 |
| 45.000 | 0.061012 |
| 46.000 | 0.062368 |
| 47.000 | 0.063723 |
| 48.000 | 0.065079 |
| 49.000 | 0.066435 |
| 50.000 | 0.067791 |
| 51.000 | 0.069147 |
| 52.000 | 0.070503 |
| 53.000 | 0.071858 |
| 54.000 | 0.073214 |
| 55.000 | 0.074570 |
| 56.000 | 0.075926 |
| 57.000 | 0.077282 |
| 58.000 | 0.078637 |
| 59.000 | 0.079993 |
| ft⋅lbf | kJ |
|---|---|
| 60.000 | 0.081349 |
| 61.000 | 0.082705 |
| 62.000 | 0.084061 |
| 63.000 | 0.085417 |
| 64.000 | 0.086772 |
| 65.000 | 0.088128 |
| 66.000 | 0.089484 |
| 67.000 | 0.090840 |
| 68.000 | 0.092196 |
| 69.000 | 0.093551 |
| 70.000 | 0.094907 |
| 71.000 | 0.096263 |
| 72.000 | 0.097619 |
| 73.000 | 0.098975 |
| 74.000 | 0.10033 |
| 75.000 | 0.10169 |
| 76.000 | 0.10304 |
| 77.000 | 0.10440 |
| 78.000 | 0.10575 |
| 79.000 | 0.10711 |
Foot-Pounds to Kilojoules Conversion
Converting Foot-Pounds (ft⋅lbf) to Kilojoules (kJ) is a common energy and power conversion. 1 ft⋅lbf equals 0.001356 kJ. For example, 100 ft⋅lbf is equal to 0.135582 kJ.
Quick Mental Math: Foot-Pounds to Kilojoules
Divide foot-pounds by 737.6 to convert to kilojoules.
Why is converting Foot-Pounds to Kilojoules tricky?
foot-pounds to kilojoules mixes unit systems where neither feels natural.
Quick Reference Values
1 ft⋅lbf = 0.001356 kJ. 5 ft⋅lbf = 0.006779 kJ. 10 ft⋅lbf = 0.013558 kJ. 25 ft⋅lbf = 0.033895 kJ. 50 ft⋅lbf = 0.067791 kJ. 100 ft⋅lbf = 0.135582 kJ.
What is Foot-Pounds?
Foot-Pounds (ft⋅lbf) is a unit of energy and power. A foot-pound is a unit of work or energy equal to the work done by a force of one pound-force acting over a distance of one foot. It corresponds exactly to 1.355817948 joules in SI units. Foot-pounds are widely used in engineering and mechanics to quantify torque and energy [nist-cuu]. The foot-pound dates back to the British Imperial system, standardized in the 19th century for practical engineering calculations involving force and distance. It became a fundamental unit in mechanical engineering and remains common in US customary units [nist-cuu]. Foot-pounds are extensively used in the United States in mechanical engineering, automotive torque specifications, and energy measurement. They remain relevant in industries where imperial units dominate, although SI units are preferred internationally [nist-si-guide].
What is Kilojoules?
Kilojoules (kJ) is a unit of energy and power. A kilojoule is a unit of energy equal to 1,000 joules. It quantifies work, heat, or energy transfer in the metric system, with one joule defined as one newton meter. Kilojoules are widely applied in physics, chemistry, and nutrition to measure energy content or expenditure [iso-80000]. The joule unit was named after James Prescott Joule in the late 19th century, reflecting mechanical equivalent of heat measurements. The kilojoule, as a multiple, became common with SI adoption to express larger energy quantities clearly and is standardized by ISO and BIPM [bipm-si-brochure]. Kilojoules are standard in scientific disciplines globally for energy quantification. Nutrition labels in many countries use kilojoules to indicate food energy content, while engineering and physics consistently apply kJ for energy calculations [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: foot pound, footpounds, foot pounds, kilojoule, kilo joules, kilojouls, kilojoules energy, kj. All of these refer to the Foot-Pounds to Kilojoules conversion.