Foot-Pounds (ft·lbf) to Ergs Converter
Enter a value to instantly convert between energy units.
1 Foot-Pound Force = 13558179.4833 Erg
Key Formulas
Kilocalorie → Kilojoule
kJ = kcal × 4.184Kilojoule → Kilocalorie
kcal = kJ × 0.239006Kilowatt-Hour → Joule
J = kWh × 3600000Joule → Kilowatt-Hour
kWh = J × 2.77778e-7Formula
ergs = ft·lbf × 1.3558×10⁷The foot-pound (imperial mechanical) and erg (CGS mechanical) are both small units of work. One ft·lbf = 1.356 J = 1.356×10⁷ ergs. Labs working across unit systems — especially with older literature or dual-standard equipment — need this conversion for spec comparisons and data interpretation.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
An engineer converting 1 ft·lbf to ergs for a dual-unit equipment specification sheet.
1 ft·lbf = 13558000 erg
A physicist comparing 10 ft·lbf impact energy to ergs when referencing older CGS literature.
10 ft·lbf = 135580000 erg
A lab technician converting 100 ft·lbf torque work to ergs for legacy data compatibility.
100 ft·lbf = 1355800000 erg
A researcher translating 1000 ft·lbf mechanical testing energy to ergs for international collaboration paper.
1000 ft·lbf = 13558000000 erg