An erg is a CGS energy unit.
Ergs to Foot-pounds Converter — erg to ft-lb
Convert Erg (erg) to Foot-pound (ft-lb) using the exact conversion factor (1 erg = 7.375621e-8 foot-pound). See the formula, worked examples, and conversion table.
Ergs to Foot-pounds converter
Converter
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Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
Work from one pound-force over one foot.
Result = input x 1e-7 / 1.355817948.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ergs to Foot-pounds
Erg and Foot-pound both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: An erg is a CGS energy unit, and work from one pound-force over one foot.
Formula
foot-pounds = ergs × 7.375621e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 erg equals 1e-7 base units, and 1 foot-pound equals 1.35581794833 base units, so dividing one by the other gives the direct erg-to-foot-pound factor of 7.375621e-8.
Simple example
1 erg × 7.375621e-8 = 7.375621e-8 ft-lb
1 erg = 7.375621e-8 foot-pounds.
Real-world example
100 erg × 7.375621e-8 = 0.0000073756 ft-lb
100 ergs = 0.0000073756 foot-pounds.
Conversion table
| Erg (erg) | Foot-pound (ft-lb) |
|---|---|
| 1 erg | 7.375621e-8 ft-lb |
| 10 erg | 7.375621e-7 ft-lb |
| 100 erg | 0.0000073756 ft-lb |
| 500 erg | 0.0000368781 ft-lb |
| 1,000 erg | 0.0000737562 ft-lb |
| 2,000 erg | 0.0001475124 ft-lb |
Reverse conversion: Foot-pound to Erg
7.375621e-8 ft-lb × 13558179.48 = 0.9999999332 erg
7.375621e-8 foot-pounds = 0.9999999332 ergs.
ergs = foot-pounds × 13558179.4833
For a page dedicated to this direction, see Foot-pound to Erg.
Understanding the Erg (erg)
An erg is a CGS energy unit.
Understanding the Foot-pound (ft-lb)
Work from one pound-force over one foot.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many foot-pounds are in 1 erg?
1 erg equals 7.375621e-8 foot-pounds, using the exact defined conversion factor rather than an estimate.
How do I convert erg to foot-pound?
Multiply the erg value by 7.375621e-8. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound back to erg?
Use the reverse factor: 1 foot-pound equals 13,558,179.48 ergs. You can also use the swap control in the converter above to flip the direction instantly.
What is a erg?
Erg (erg) is a unit of energy.
What is a foot-pound?
Foot-pound (ft-lb) is a unit of energy.
Is the erg to foot-pound conversion exact?
Yes. Both erg and foot-pound are defined by fixed standards rather than physical artifacts, so the factor of 7.375621e-8 used above is exact to as many digits as you choose to display.