Fuel Efficiency Mass / Btu IT/lb → kJ/kg
Convert Btu IT per pound to Kilojoules per kilogram
Convert fuel energy per mass and reciprocal specific fuel consumption. Convert Btu IT per pound (Btu IT/lb) to Kilojoules per kilogram (kJ/kg). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Kilojoules per kilogram to Btu IT per pound →
How to convert Btu IT per pound to kilojoules per kilogram
This family describes energy content or energy-normalized fuel use, not kilometers per kilogram. Heating values depend on the fuel and on higher versus lower heating-value conventions. Grams per kWh is the reciprocal of energy per mass.
Use x for the value in Btu IT/lb, b for the intermediate value in J/kg, and y for the result in kJ/kg.
kJ/kg = Btu IT/lb × 2326 ÷ 1000
Worked examples
10 Btu IT/lb ≈ 23.26 kJ/kg
Step 1: (10 × 2326) ≈ 23260 J/kg.
Step 2: 23260 ÷ 1000 ≈ 23.26 kJ/kg.20 Btu IT/lb ≈ 46.52 kJ/kg
Step 1: (20 × 2326) ≈ 46520 J/kg.
Step 2: 46520 ÷ 1000 ≈ 46.52 kJ/kg.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Btu IT per pound
Btu IT per pound (Btu IT/lb) measures fuel efficiency mass under the conventions above. The base value in J/kg is (x × 2326), where x is the numerical value in Btu IT/lb. Factors shown here are rounded for display; calculations use the stored factor.
About Kilojoules per kilogram
Kilojoules per kilogram (kJ/kg) measures fuel efficiency mass under the conventions above. The base value in J/kg is (x × 1000), where x is the numerical value in kJ/kg. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Btu IT per pound to kilojoules per kilogram reference table
| Btu IT per pound (Btu IT/lb) | Kilojoules per kilogram (kJ/kg) |
|---|---|
| 1 | 2.326 |
| 5 | 11.63 |
| 10 | 23.26 |
| 25 | 58.15 |
| 50 | 116.3 |
| 100 | 232.6 |
| 1000 | 2326 |
Browse every fuel efficiency mass conversion →