Convert Foot-Pounds per Pound to Kilojoules per Kilogram
Instantly convert Foot-Pounds per Pound (ft·lbf/lb) to Kilojoules per Kilogram (kJ/kg) with our free online calculator.
Formula: ft·lbf/lb to kJ/kg — multiply by 0.00298907
Reference Table
| Foot-Pounds per Pound (ft·lbf/lb) | Kilojoules per Kilogram (kJ/kg) |
|---|---|
| 1 | 0.00298907 |
| 5 | 0.0149453 |
| 10 | 0.0298907 |
| 25 | 0.0747267 |
| 50 | 0.149453 |
| 100 | 0.298907 |
How to Convert Foot-Pounds per Pound to Kilojoules per Kilogram
Formula
To convert Foot-Pounds per Pound (ft·lbf/lb) to Kilojoules per Kilogram (kJ/kg): multiply by 0.00298907
Step-by-Step
- Start with your value in Foot-Pounds per Pound (ft·lbf/lb).
- Multiply by 0.00298907 to perform the conversion.
- The result is your value expressed in Kilojoules per Kilogram (kJ/kg).
Conversion Factor
1 ft·lbf/lb = 0.00298907 kJ/kg
Reverse Factor
1 kJ/kg = 334.552 ft·lbf/lb
Worked Example
Convert 25 Foot-Pounds per Pound to Kilojoules per Kilogram: 25 ft·lbf/lb = 0.0747267 kJ/kg
About Foot-Pound per Pound (ft·lbf/lb)
An imperial specific-energy unit used in US ballistics and US-edition mechanical-engineering textbooks. Projectile kinetic energy per mass and mechanical strain energy are sometimes quoted in ft·lbf/lb. 1 ft·lbf/lb ≈ 2.989 J/kg — very small, so this unit is practical for low-energy applications like spring deflection energy.
About Kilojoule per Kilogram (kJ/kg)
A metric specific-energy unit equal to 1,000 J/kg. kJ/kg is the dominant unit in thermodynamics — specific enthalpy and specific internal energy values in steam tables and refrigerant tables are quoted in kJ/kg. Saturated water enthalpy at 100°C: ~419 kJ/kg; saturated steam at 100°C: ~2,676 kJ/kg. Food energy content outside the US is also reported in kJ/kg.
Quick Facts
- 1 Foot-Pound per Pound equals 0.00298907 Kilojoules per Kilogram
- 1 Kilojoule per Kilogram equals 334.552 Foot-Pounds per Pound
- Foot-Pound per Pound is a unit of specific energy
- Kilojoule per Kilogram is a unit of specific energy
- This conversion is commonly used in fuel comparison, battery technology, and rocket propulsion
- The Foot-Pound per Pound belongs to the imperial system
- The Kilojoule per Kilogram belongs to the metric system
Common Foot-Pound per Pound to Kilojoule per Kilogram Conversions
| Foot-Pounds per Pound (ft·lbf/lb) | Kilojoules per Kilogram (kJ/kg) |
|---|---|
| 0.01 | 0.0000298907 |
| 0.1 | 0.000298907 |
| 0.25 | 0.000747267 |
| 0.5 | 0.00149453 |
| 1 | 0.00298907 |
| 2 | 0.00597814 |
| 3 | 0.00896721 |
| 5 | 0.0149453 |
| 10 | 0.0298907 |
| 15 | 0.0448361 |
| 20 | 0.0597814 |
| 25 | 0.0747267 |
| 50 | 0.149453 |
| 75 | 0.22418 |
| 100 | 0.298907 |
| 250 | 0.747267 |
| 500 | 1.49453 |
| 1000 | 2.98907 |
| 5000 | 14.9454 |
| 10000 | 29.8907 |
Understanding Foot-Pounds per Pound
The Foot-Pound per Pound (symbol: ft·lbf/lb) is a unit of specific energy. An imperial specific-energy unit used in US ballistics and US-edition mechanical-engineering textbooks. Projectile kinetic energy per mass and mechanical strain energy are sometimes quoted in ft·lbf/lb. 1 ft·lbf/lb ≈ 2.989 J/kg — very small, so this unit is practical for low-energy applications like spring deflection energy.
It belongs to the imperial measurement system.
Foot-Pounds per Pound are commonly used in fuel comparison, battery technology, and rocket propulsion.
Understanding Kilojoules per Kilogram
The Kilojoule per Kilogram (symbol: kJ/kg) is a unit of specific energy. A metric specific-energy unit equal to 1,000 J/kg. kJ/kg is the dominant unit in thermodynamics — specific enthalpy and specific internal energy values in steam tables and refrigerant tables are quoted in kJ/kg. Saturated water enthalpy at 100°C: ~419 kJ/kg; saturated steam at 100°C: ~2,676 kJ/kg. Food energy content outside the US is also reported in kJ/kg.
It belongs to the metric measurement system.
Kilojoules per Kilogram are commonly used in fuel comparison, battery technology, and rocket propulsion.
Why Convert Foot-Pounds per Pound to Kilojoules per Kilogram?
Converting between Foot-Pounds per Pound and Kilojoules per Kilogram is a frequent requirement for engineers, scientists, and students working with specific energy values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate specific energy conversion is essential.
Frequently Asked Questions
How do I convert Foot-Pounds per Pound to Kilojoules per Kilogram?
An imperial specific-energy unit used in US ballistics and US-edition mechanical-engineering textbooks. To convert Foot-Pounds per Pound to Kilojoules per Kilogram, multiply by 0.00298907. For example, 25 ft·lbf/lb equals 0.0747267 kJ/kg.
How many Kilojoules per Kilogram are in 1 Foot-Pound per Pound?
There are 0.00298907 Kilojoules per Kilogram in 1 Foot-Pound per Pound.
How many Foot-Pounds per Pound are in 1 Kilojoule per Kilogram?
There are 334.552 Foot-Pounds per Pound in 1 Kilojoule per Kilogram.
What is the formula for Foot-Pound per Pound to Kilojoule per Kilogram conversion?
The formula is: multiply by 0.00298907. This means 1 ft·lbf/lb = 0.00298907 kJ/kg.
Is a Foot-Pound per Pound bigger than a Kilojoule per Kilogram?
Yes. One Foot-Pound per Pound is larger than one Kilojoule per Kilogram because 1 ft·lbf/lb equals 0.00298907 kJ/kg, which is less than 1.
When do you need to convert between Foot-Pounds per Pound and Kilojoules per Kilogram?
A metric specific-energy unit equal to 1,000 J/kg. Foot-Pound per Pound and Kilojoule per Kilogram are both specific energy units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.