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 Nanojoules
Convert Foot-pound (ft-lb) to Nanojoule (nJ) 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 nanojoules (nJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A nanojoule (nJ) is a metric-prefixed unit of energy equal to 10-9 joules, a fraction of a single joule, using the SI nano prefix.
nJ = ft-lb × 1355817948
Results update instantly for Foot-pounds to Nanojoules conversions.
Reserved above the conversion cards and below the converter.
Formula
nJ = ft-lb × 1355817948
ft-lb = nJ × 7.375621493e-10
Conversion table
| 1 ft-lb | 1.355818e+09 nJ |
| 5 ft-lb | 6.779090e+09 nJ |
| 10 ft-lb | 1.355818e+10 nJ |
| 20 ft-lb | 2.711636e+10 nJ |
| 50 ft-lb | 6.779090e+10 nJ |
| 100 ft-lb | 1.355818e+11 nJ |
| 500 ft-lb | 6.779090e+11 nJ |
| 1000 ft-lb | 1.355818e+12 nJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both foot-pound and nanojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in foot-pounds by 1355817948 to get nanojoules. To reverse the conversion, multiply a nanojoule value by 7.375621493e-10 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 Nanojoule (nJ)?
A nanojoule (nJ) is a metric-prefixed unit of energy equal to 10-9 joules, a fraction of a single joule, using the SI nano prefix.
How do I convert foot-pounds to nanojoules?
Multiply the foot-pound value by 1355817948 to get the equivalent in nanojoules. For example, 5 ft-lb × 1355817948 = 6.779090e+09 nJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1355817948 is an exact, non-rounded value.
Can I convert nanojoules back to foot-pounds?
Yes. Divide the nanojoule value by 1355817948, or multiply it by 7.375621493e-10, to get foot-pounds.
Reserved between the FAQ and the article so the page stays balanced.
About converting foot-pounds to nanojoules
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 nanojoule (nJ) is a metric-prefixed unit of energy equal to 10-9 joules, a fraction of a single joule, using the SI nano prefix.
Use this calculator to move between foot-pounds and nanojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.