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kJ/kg to Wh/kg Converter

Convert kilojoule per kilogram (kJ/kg) to watt-hour per kilogram (Wh/kg). Enter a value for an instant result, or use the examples and reverse conversion below.

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ENERGY

Specific energy

Energy stored or released per unit mass.

kJ/kg
Wh/kg

Try a decimal, 1e-9, 1/3, or 5 1/2.

Result0.277778 Wh/kg1 kJ/kg = 0.277778 Wh/kg
HOW IT IS CALCULATED

Convert through joule per kilogram

Enter a kilojoule per kilogram value to calculate watt-hour per kilogram with full internal precision before display rounding.

Display PrecisionAuto · 6 significant digits

Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.

QUICK REFERENCE

All units in this quantity

UnitSymbolConverted value
joule per kilogramfrom kJ/kgJ/kg1000
kilojoule per kilogramfrom kJ/kgkJ/kg1
megajoule per kilogramfrom kJ/kgMJ/kg0.001
watt-hour per kilogramfrom kJ/kgWh/kg0.277778
kilowatt-hour per kilogramfrom kJ/kgkWh/kg0.000277778
thermochemical calorie per gramfrom kJ/kgcalₜₕ/g0.239006
Btu per poundfrom kJ/kgBtuIT/lb0.429923

SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.

kJ/kg to Wh/kg Conversion Reference

Kilojoule Per Kilogram (kJ/kg) and watt-hour per kilogram (Wh/kg) are units of specific energy. Use this page to convert in either direction.

Conversion Examples

Kilojoule Per Kilogram to Watt-hour Per Kilogram
Kilojoule Per Kilogram (kJ/kg)Watt-hour Per Kilogram (Wh/kg)
1 kJ/kg0.277778 Wh/kg
5 kJ/kg1.38889 Wh/kg
10 kJ/kg2.77778 Wh/kg
100 kJ/kg27.7778 Wh/kg

Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.

Reverse Conversion

Wh/kg to kJ/kg (watt-hour per kilogram to kilojoule per kilogram)

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