Joule to Feet-Pound Converter
Energy · unit-converter
Convert Joule to Feet-Pound with fixed input and output units, a step-by-step formula line, and reference tables. Factors are joule-based; food energy uses thermochemical calories. The full Energy Converter also includes MMBtu, toe, thermal kWh, and MeV/GeV.
Calculator
From: Joule (j)
To: Feet-Pound (ftlb)
About Joule
The joule is the SI unit of energy. All other units here are converted through fixed joule equivalents.
About Feet-Pound
The feet-pound is a mechanical work unit common in US torque and ballistics contexts.
How to convert joules to feet-pounds
1 joule is equal to 0.73756214927727 feet-pound when both are expressed in joule-equivalents:
1 j = (1 J ÷ 1.3558179483314003 J) ftlb = 0.73756214927727 ftlb
Each joule is defined as 1 J and each feet-pound as 1.3558179483314003 J in this tool, so one j equals 1 ÷ 1.3558179483314003 ftlb = 0.73756214927727 ftlb.
Let d(j) be the numeric amount in Joule (j), and d(ftlb) the amount in Feet-Pound (ftlb). Then:
d(ftlb) = d(j) × (1 / 1.3558179483314003)
Equivalently, divide by how many j fit into one ftlb (joules per ftlb divided by joules per j):
d(ftlb) = d(j) ÷ 1.3558179483314
Or: feet-pound = joule ÷ 1.3558179483314
Examples
Example #1: Convert 1 j to feet-pound
1 j = 1 j × (1/1.3558179483314003) ftlb = 0.7375621493 ftlb
1 j = 1 j ÷ 1.3558179483314 = 0.7375621493 ftlb
Example #2: Convert 10 j to feet-pound
10 j = 10 j × (1/1.3558179483314003) ftlb = 7.3756214928 ftlb
10 j = 10 j ÷ 1.3558179483314 = 7.3756214928 ftlb
Summary
To convert Joule to Feet-Pound, multiply the value in j by the ratio of joules per j divided by joules per ftlb. Equivalently: value_ftlb = value_j × (1 / 1.3558179483314003). Numerically, 1 j equals 0.7375621492772654 ftlb.
Relationship context
You are converting between SI energy (joules) (Joules) and US / imperial engineering units (BTU, therm, ft·lb) (Feet-Pounds). All values are mapped through joules first. The numeric factor is 7.375621e-1.
Conversion tables
| Joule (j) | Feet-Pound (ftlb) |
|---|---|
| 0.1 | 0.0737562149 |
| 1 | 0.7375621493 |
| 2 | 1.4751242985 |
| 3 | 2.2126864478 |
| 4 | 2.9502485971 |
| 5 | 3.6878107464 |
| 6 | 4.4253728957 |
| 7 | 5.1629350449 |
| 8 | 5.9004971942 |
| 9 | 6.6380593435 |
| Joule (j) | Feet-Pound (ftlb) |
|---|---|
| 10 | 7.3756214928 |
| 20 | 14.7512429855 |
| 30 | 22.1268644783 |
| 40 | 29.5024859711 |
| 50 | 36.8781074639 |
| 60 | 44.2537289566 |
| 70 | 51.6293504494 |
| 80 | 59.0049719422 |
| 90 | 66.380593435 |
| 100 | 73.7562149277 |