A foot-pound (ft-lb) is the work done by one pound-force acting through a distance of one foot, commonly used in mechanical and engineering calculations.
Foot-pounds to Yoctojoules
Convert Foot-pound (ft-lb) to Yoctojoule (yJ) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Energy calculator
Energy Converter
Convert foot-pounds (ft-lb) to yoctojoules (yJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A yoctojoule (yJ) is a metric-prefixed unit of energy equal to 10-24 joules, a fraction of a single joule, using the SI yocto prefix.
yJ = ft-lb × 1.355817948e+24
Results update instantly for Foot-pounds to Yoctojoules conversions.
Reserved above the conversion cards and below the converter.
Formula
yJ = ft-lb × 1.355817948e+24
ft-lb = yJ × 7.375621493e-25
Conversion table
| 1 ft-lb | 1.355818e+24 yJ |
| 5 ft-lb | 6.779090e+24 yJ |
| 10 ft-lb | 1.355818e+25 yJ |
| 20 ft-lb | 2.711636e+25 yJ |
| 50 ft-lb | 6.779090e+25 yJ |
| 100 ft-lb | 1.355818e+26 yJ |
| 500 ft-lb | 6.779090e+26 yJ |
| 1000 ft-lb | 1.355818e+27 yJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both foot-pound and yoctojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in foot-pounds by 1.355817948e+24 to get yoctojoules. To reverse the conversion, multiply a yoctojoule value by 7.375621493e-25 to get back to foot-pounds.
Frequently asked questions
What is Foot-pound (ft-lb)?
A foot-pound (ft-lb) is the work done by one pound-force acting through a distance of one foot, commonly used in mechanical and engineering calculations.
What is Yoctojoule (yJ)?
A yoctojoule (yJ) is a metric-prefixed unit of energy equal to 10-24 joules, a fraction of a single joule, using the SI yocto prefix.
How do I convert foot-pounds to yoctojoules?
Multiply the foot-pound value by 1.355817948e+24 to get the equivalent in yoctojoules. For example, 5 ft-lb × 1.355817948e+24 = 6.779090e+24 yJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.355817948e+24 is an exact, non-rounded value.
Can I convert yoctojoules back to foot-pounds?
Yes. Divide the yoctojoule value by 1.355817948e+24, or multiply it by 7.375621493e-25, to get foot-pounds.
Reserved between the FAQ and the article so the page stays balanced.
About converting foot-pounds to yoctojoules
A foot-pound (ft-lb) is the work done by one pound-force acting through a distance of one foot, commonly used in mechanical and engineering calculations. A yoctojoule (yJ) is a metric-prefixed unit of energy equal to 10-24 joules, a fraction of a single joule, using the SI yocto prefix.
Use this calculator to move between foot-pounds and yoctojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.