cal/g\text{cal/g}

calorie per gram

Specific latent heatexact by definition

The calorie per gram is the historical metric unit of latent heat, equal to exactly 4184 J/kg using the thermochemical calorie of 4.184 joules. The factor is exact by definition of that calorie. In these units water's heat of fusion is about 80 cal/g and its heat of vaporisation about 540 cal/g, two numbers that generations of chemistry students memorised.

Watch out: Several calories differ by roughly one part in a thousand. This catalog uses the thermochemical calorie of exactly 4.184 J; the International Table calorie is 4.1868 J. Older tables rarely say which they mean.

1 cal/g\text{cal/g} 4,184 J/kg\text{J/kg}

One calorie per gram in every specific latent heat unit

4,184joule per kilogram (J/kg)
1,399.77foot pound-force per pound (ft·lbf/lb)
4.184kilojoule per kilogram (kJ/kg)
4.184joule per gram (J/g)
1.7988BTU per pound (BTU/lb)
1.16222watt-hour per kilogram (W·h/kg)
1calorie per gram (cal/g)this unit
1kilocalorie per kilogram (kcal/kg)
0.004184megajoule per kilogram (MJ/kg)
0.00116222kilowatt-hour per kilogram (kW·h/kg)