EVERYDAY · ENGINEERING · SCIENCE

Unit conversion. Made clear.

Start with a familiar unit, type a value, and get a dependable answer with sensible precision. Fractions and scientific notation are welcome.

520units ready to convert
ENERGY

Energy & work

Mechanical, electrical, thermal and particle energy.

ft·lbf
J

Try a decimal, 1e-9, 1/3, or 5 1/2.

Resultft·lbf → JConvert foot pound-force to joule
HOW IT IS CALCULATED

Convert through joule

Enter a foot pound-force value to calculate joule with full internal precision before display rounding.

Display precisionAuto · 12 significant digits

Auto keeps up to 12 significant digits, trims unnecessary zeroes, and switches to scientific notation for extreme magnitudes.

QUICK REFERENCE

All units in this quantity

UnitSymbolConverted value
ergfrom ft·lbfergInteractive
microjoulefrom ft·lbfµJInteractive
millijoulefrom ft·lbfmJInteractive
joulefrom ft·lbfJInteractive
kilojoulefrom ft·lbfkJInteractive
megajoulefrom ft·lbfMJInteractive
gigajoulefrom ft·lbfGJInteractive
watt-hourfrom ft·lbfWhInteractive
kilowatt-hourfrom ft·lbfkWhInteractive
megawatt-hourfrom ft·lbfMWhInteractive
thermochemical caloriefrom ft·lbfcalₜₕInteractive
thermochemical kilocaloriefrom ft·lbfkcalₜₕInteractive
International Table caloriefrom ft·lbfcalITInteractive
International Table British thermal unitfrom ft·lbfBtuITInteractive
U.S. thermfrom ft·lbftherm USInteractive
foot pound-forcefrom ft·lbfft·lbfInteractive
electronvoltfrom ft·lbfeVInteractive
kiloelectronvoltfrom ft·lbfkeVInteractive
megaelectronvoltfrom ft·lbfMeVInteractive
gigaelectronvoltfrom ft·lbfGeVInteractive
ton of TNTfrom ft·lbft TNTInteractive

SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.