The specific heat capacity of water is approximately 4,184 to 4,200 Joules per kilogram per degree Celsius (J/kg°C). This means it takes about 4,184 J of energy to raise the temperature of 1 kilogram of water by 1°C

. In terms of smaller units, this is equivalent to about 4.184 J per gram per degree Celsius (J/g°C)

. Water has one of the highest specific heat capacities among common substances, which explains its important role in temperature regulation