An electronvolt is the energy gained by an electron across one volt.
Electronvolts to Foot-pounds Converter — eV to ft-lb
Convert Electronvolt (eV) to Foot-pound (ft-lb) using the exact conversion factor (1 electronvolt = 1.181705e-19 foot-pound). See the formula, worked examples, conversion table, and common uses.
Electronvolts to Foot-pounds converter
Converter
Energy Converter
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 1.60217663e-19 / 1.355817948.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Electronvolts to Foot-pounds
Electronvolt and Foot-pound both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Electronvolt is most often used for particle physics (particle accelerator energies are often quoted in gev or tev).
Formula
foot-pounds = electronvolts × 1.181705e-19
This factor comes from each unit's defined relationship to the category's base unit: 1 electronvolt equals 1.602177e-19 base units, and 1 foot-pound equals 1.35581794833 base units, so dividing one by the other gives the direct electronvolt-to-foot-pound factor of 1.181705e-19.
Simple example
1 eV × 1.181705e-19 = 1.181705e-19 ft-lb
1 electronvolt = 1.181705e-19 foot-pounds.
Real-world example
100 eV × 1.181705e-19 = 1.181705e-17 ft-lb
100 electronvolts = 1.181705e-17 foot-pounds.
Conversion table
| Electronvolt (eV) | Foot-pound (ft-lb) |
|---|---|
| 1 eV | 1.181705e-19 ft-lb |
| 10 eV | 1.181705e-18 ft-lb |
| 100 eV | 1.181705e-17 ft-lb |
| 500 eV | 5.908524e-17 ft-lb |
| 1,000 eV | 1.181705e-16 ft-lb |
| 2,000 eV | 2.36341e-16 ft-lb |
Reverse conversion: Foot-pound to Electronvolt
1.181705e-19 ft-lb × 8.46235e+18 = 1.000000134 eV
1.181705e-19 foot-pounds = 1.000000134 electronvolts.
electronvolts = foot-pounds × 8.46235e+18
For a page dedicated to this direction, see Foot-pound to Electronvolt.
Understanding the Electronvolt
Electronvolt (eV) measures energy. The energy gained by a single electron accelerated through an electric potential difference of one volt — a very small amount of energy, exactly 1.602176634 × 10⁻¹⁹ joules. It is classified as a non-SI unit accepted for use with the SI, common in physics.
Where it's used: Standard unit throughout particle physics, atomic physics, and chemistry worldwide
Uses of the Electronvolt today
- Particle physics (particle accelerator energies are often quoted in GeV or TeV)
- Atomic and molecular energy levels
- Semiconductor band-gap energies
Understanding the Foot-pound (ft-lb)
Work from one pound-force over one foot.
Electronvolt — sources
- BIPM SI Brochure, 9th edition — Electronvolt listed as a non-SI unit accepted for use with the SI, with its exact value fixed via the elementary charge.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many foot-pounds are in 1 electronvolt?
1 electronvolt equals 1.181705e-19 foot-pounds, using the exact defined conversion factor rather than an estimate.
How do I convert electronvolt to foot-pound?
Multiply the electronvolt value by 1.181705e-19. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound back to electronvolt?
Use the reverse factor: 1 foot-pound equals 8.46235e+18 electronvolts. You can also use the swap control in the converter above to flip the direction instantly.
What is a electronvolt?
Electronvolt (eV) measures energy. The energy gained by a single electron accelerated through an electric potential difference of one volt — a very small amount of energy, exactly 1.602176634 × 10⁻¹⁹ joules. It is classified as a non-SI unit accepted for use with the SI, common in physics.
What is a foot-pound?
Foot-pound (ft-lb) is a unit of energy.
Is the electronvolt to foot-pound conversion exact?
Yes. The energy gained by a single electron accelerated through an electric potential difference of one volt — a very small amount of energy, exactly 1.602176634 × 10⁻¹⁹ joules. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the electronvolt still used today?
Standard unit throughout particle physics, atomic physics, and chemistry worldwide