Quectojoule is 1e-30 joule units.
Quectojoules to Foot-pounds Converter — qJ to ft-lb
Convert Quectojoule (qJ) to Foot-pound (ft-lb) using the exact conversion factor (1 quectojoule = 7.375621e-31 foot-pound). See the formula, worked examples, and conversion table.
Quectojoules 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 1e-30 / 1.355817948.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Quectojoules to Foot-pounds
Quectojoule and Foot-pound both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Quectojoule is 1e-30 joule units, and work from one pound-force over one foot.
Formula
foot-pounds = quectojoules × 7.375621e-31
This factor comes from each unit's defined relationship to the category's base unit: 1 quectojoule equals 1e-30 base units, and 1 foot-pound equals 1.35581794833 base units, so dividing one by the other gives the direct quectojoule-to-foot-pound factor of 7.375621e-31.
Simple example
1 qJ × 7.375621e-31 = 7.375621e-31 ft-lb
1 quectojoule = 7.375621e-31 foot-pounds.
Real-world example
100 qJ × 7.375621e-31 = 7.375621e-29 ft-lb
100 quectojoules = 7.375621e-29 foot-pounds.
Conversion table
| Quectojoule (qJ) | Foot-pound (ft-lb) |
|---|---|
| 1 qJ | 7.375621e-31 ft-lb |
| 10 qJ | 7.375621e-30 ft-lb |
| 100 qJ | 7.375621e-29 ft-lb |
| 500 qJ | 3.687811e-28 ft-lb |
| 1,000 qJ | 7.375621e-28 ft-lb |
| 2,000 qJ | 1.475124e-27 ft-lb |
Reverse conversion: Foot-pound to Quectojoule
7.375621e-31 ft-lb × 1.355818e+30 = 0.9999999332 qJ
7.375621e-31 foot-pounds = 0.9999999332 quectojoules.
quectojoules = foot-pounds × 1.355818e+30
For a page dedicated to this direction, see Foot-pound to Quectojoule.
Understanding the Quectojoule (qJ)
Quectojoule is 1e-30 joule units.
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 quectojoule?
1 quectojoule equals 7.375621e-31 foot-pounds, using the exact defined conversion factor rather than an estimate.
How do I convert quectojoule to foot-pound?
Multiply the quectojoule value by 7.375621e-31. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound back to quectojoule?
Use the reverse factor: 1 foot-pound equals 1.355818e+30 quectojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a quectojoule?
Quectojoule (qJ) is a unit of energy.
What is a foot-pound?
Foot-pound (ft-lb) is a unit of energy.
Is the quectojoule to foot-pound conversion exact?
Yes. Both quectojoule and foot-pound are defined by fixed standards rather than physical artifacts, so the factor of 7.375621e-31 used above is exact to as many digits as you choose to display.