The rate of energy loss of carbon and oxygen ions passing through carbon, aluminium, nickel, silver, and gold absorbers has been measured in the energy interval of 0.36 to 3.2 MeV. Ranges of the carbon and oxygen ions in these stopping materials were obtained by numerical integration of the rate of energy loss against energy curve. The relative accuracy of the results is to about 2% and the absolute accuracy is to better than 5%.