Foot-pounds to Nanojoules Converter
Enter the energy in foot-pounds below to convert it to nanojoules.
Convert Foot-pounds to Nanojoules
Enter a value in foot-pounds (ft·lbf) to convert to nanojoules (nJ).
Foot-pound to Nanojoule Conversion Table
Table showing various foot-pound measurements converted to nanojoules. Click any preset value or arrow to load it into the converter.
| Foot-pounds (ft·lbf) | Nanojoules (nJ) |
|---|---|
| 0.0000001 ft·lbf | 135.5817948 nJ |
| 0.0000002 ft·lbf | 271.1635897 nJ |
| 0.0000003 ft·lbf | 406.7453845 nJ |
| 0.0000004 ft·lbf | 542.3271793 nJ |
| 0.0000005 ft·lbf | 677.9089742 nJ |
| 0.0000006 ft·lbf | 813.490769 nJ |
| 0.0000007 ft·lbf | 949.0725638 nJ |
| 0.0000008 ft·lbf | 1,084.6543587 nJ |
| 0.0000009 ft·lbf | 1,220.2361535 nJ |
| 0.00000001 ft·lbf | 13.5581795 nJ |
How to Convert Foot-pounds to Nanojoules
To convert foot-pounds to nanojoules, multiply the energy by the following conversion ratio: 1,355,817,948.3314 nanojoules/foot-pound.
Since one foot-pound is equal to 1,355,817,948.3314 nanojoules, you can use this simple formula to convert:
The energy in nanojoules is equal to the energy in foot-pounds multiplied by 1,355,817,948.3314.
For example, here's how to convert 5 foot-pounds to nanojoules using the formula above.
How Many Nanojoules Are in a Foot-pound?
There are 1,355,817,948.3314 nanojoules in a foot-pound, which is why we use this value in the formula above.
Our foot-pound to nanojoule calculator automatically converts your energy measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Foot-pounds and nanojoules are both units used to measure energy. Keep reading to learn more about each unit.
What Is a Foot-pound?
A foot-pound is a unit of energy equal to 1.3558179 joules (J), the base unit for energy. Mechanical work unit equal to 1.355818 Joules. [1]
The foot-pound is classified as a US customary and imperial unit of energy. Foot-pounds can be abbreviated as ft·lbf; for example, 1 foot-pound can be written as 1 ft·lbf.
When working with foot-pounds (ft·lbf) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, foot-pounds (ft·lbf) are widely used across standard energy applications within US customary and imperial workflows, engineering documentation, and technical data sheets.
What Is a Nanojoule?
A nanojoule is a unit of energy equal to 1/1,000,000,000 of a joule (1e-9 J). One-billionth of a Joule. [2]
The nanojoule is classified as a metric and SI-compatible unit of energy. Nanojoules can be abbreviated as nJ; for example, 1 nanojoule can be written as 1 nJ.
In the metric system, "nano" is the standard SI prefix for billionths, or 10⁻⁹. This makes the nanojoule (nJ) a convenient decimal multiple of the joule (J).
In practice, nanojoules (nJ) are widely used across fine-tolerance laboratory, analytical, and micro-scale energy measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting energy between foot-pounds (ft·lbf) and nanojoules (nJ), keep full floating-point precision (1 ft·lbf = 1,355,817,948.3314 nJ; 1 nJ = 7.375621e-10 ft·lbf) during intermediate calculations and round only the final nanojoule figure to match your instrument tolerance.
More Foot-pound & Nanojoule Conversions
Need to calculate in the opposite direction? Use our nanojoules to foot-pounds calculator to switch your starting unit immediately. You can also explore related tools such as converting nanojoules to foot-pounds, converting foot-pounds to joules, or converting joules to calories.
Convert from Foot-pounds
Frequently Asked Questions
References
- [1]NIST CODATA StandardNIST CODATA (CODATA Energy & Thermodynamic Constants)·Energy Metrology Standard — Foot-pounds (ft·lbf) to Nanojoules (nJ)
- [2]NIST SP 811 SpecificationNIST SP 811 (NIST SP 811 App. B.9 (Energy, Work & Heat))·Unit Specifications: Foot-pound (ft·lbf) (ft·lbf) & Nanojoule (nJ)
- [3]BIPM ReferenceBIPM (Derived SI Unit: Joule (J))·Conversion Factors & Mathematical Basis (ft·lbf to nJ)