kilojoule per kilogram to joule per gram
Convert kilojoule per kilogram (kJ/kg) to joule per gram (J/g). Use an editable specific energy converter, conversion formula, and reference table.
1 kJ/kg = 1 J/g
Conversion formula
One kilojoule per kilogram equals 1 joule per gram. Multiply your value in kilojoule per kilogram by this factor to get joule per gram. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 kilojoule per kilogram:5 × 1 = 5 J/g
Conversion table
| kilojoule per kilogram (kJ/kg) | joule per gram (J/g) |
|---|---|
| 0.01 | 0.01 |
| 0.1 | 0.1 |
| 1 | 1 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 25 | 25 |
| 50 | 50 |
| 100 | 100 |
| 1000 | 1,000 |
About these measurements
Specific energy expresses energy per unit mass.
The base reference used here is the joule per kilogram. One kilojoule per kilogram is 1,000 base units; one joule per gram is 1,000 base units.
Important distinctions
Compound units must match the quantity and dimension. Temperature intervals use size factors rather than temperature offsets. Calorie and BTU entries use the explicit definitions shown.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert kJ/kg to J/g?
Multiply the quantity in kJ/kg by 1. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the joule per gram to kilojoule per kilogram converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
