Quettajoule is 1e+30 joule units.
Quettajoules to Foot-pounds Converter — QJ to ft-lb
Convert Quettajoule (QJ) to Foot-pound (ft-lb) using the exact conversion factor (1 quettajoule = 7.375621e+29 foot-pound). See the formula, worked examples, and conversion table.
Quettajoules 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 Quettajoules to Foot-pounds
Quettajoule and Foot-pound both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Quettajoule is 1e+30 joule units, and work from one pound-force over one foot.
Formula
foot-pounds = quettajoules × 7.375621e+29
This factor comes from each unit's defined relationship to the category's base unit: 1 quettajoule equals 1e+30 base units, and 1 foot-pound equals 1.35581794833 base units, so dividing one by the other gives the direct quettajoule-to-foot-pound factor of 7.375621e+29.
Simple example
1 QJ × 7.375621e+29 = 7.375621e+29 ft-lb
1 quettajoule = 7.375621e+29 foot-pounds.
Real-world example
100 QJ × 7.375621e+29 = 7.375621e+31 ft-lb
100 quettajoules = 7.375621e+31 foot-pounds.
Conversion table
| Quettajoule (QJ) | Foot-pound (ft-lb) |
|---|---|
| 1 QJ | 7.375621e+29 ft-lb |
| 10 QJ | 7.375621e+30 ft-lb |
| 100 QJ | 7.375621e+31 ft-lb |
| 500 QJ | 3.687811e+32 ft-lb |
| 1,000 QJ | 7.375621e+32 ft-lb |
| 2,000 QJ | 1.475124e+33 ft-lb |
Reverse conversion: Foot-pound to Quettajoule
7.375621e+29 ft-lb × 1.355818e-30 = 0.9999999332 QJ
7.375621e+29 foot-pounds = 0.9999999332 quettajoules.
quettajoules = foot-pounds × 1.355818e-30
For a page dedicated to this direction, see Foot-pound to Quettajoule.
Understanding the Quettajoule (QJ)
Quettajoule 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 quettajoule?
1 quettajoule equals 7.375621e+29 foot-pounds, using the exact defined conversion factor rather than an estimate.
How do I convert quettajoule to foot-pound?
Multiply the quettajoule value by 7.375621e+29. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound back to quettajoule?
Use the reverse factor: 1 foot-pound equals 1.355818e-30 quettajoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a quettajoule?
Quettajoule (QJ) is a unit of energy.
What is a foot-pound?
Foot-pound (ft-lb) is a unit of energy.
Is the quettajoule to foot-pound conversion exact?
Yes. Both quettajoule and foot-pound are defined by fixed standards rather than physical artifacts, so the factor of 7.375621e+29 used above is exact to as many digits as you choose to display.