kilojoule per kilogram to watt hour per kilogram
Convert kilojoule per kilogram (kJ/kg) to watt hour per kilogram (Wh/kg). Use an editable specific energy converter, conversion formula, and reference table.
1 kJ/kg = 0.2777777778 Wh/kg
Conversion formula
One kilojoule per kilogram equals 0.2777777778 watt hour per kilogram. Multiply your value in kilojoule per kilogram by this factor to get watt hour per kilogram. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 kilojoule per kilogram:5 × 0.2777777778 = 1.388888889 Wh/kg
Conversion table
| kilojoule per kilogram (kJ/kg) | watt hour per kilogram (Wh/kg) |
|---|---|
| 0.01 | 0.002777777778 |
| 0.1 | 0.02777777778 |
| 1 | 0.2777777778 |
| 2 | 0.5555555556 |
| 5 | 1.388888889 |
| 10 | 2.777777778 |
| 25 | 6.944444444 |
| 50 | 13.88888889 |
| 100 | 27.77777778 |
| 1000 | 277.7777778 |
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 watt hour per kilogram is 3,600 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 Wh/kg?
Multiply the quantity in kJ/kg by 0.2777777778. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the watt hour per kilogram 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.
