Obtain the mass of your material in kilograms, "m," and the amount of energy being transferred to the mass in joules, "q."
Calculate the temperature change in Celsius, "delta-t." For instance, if your material's starting temperature is 10 degrees Celsius and the final temperature is 15 degrees Celsius, then "delta-t" is 5 degrees Celsius.
Calculate the specific heat, "c," using the formula c=q/(m x delta-t). For example, if the energy being applied is 1,000 joules, the mass is 1.5 kg and delta-t is 10, the specific heat of your material is 1000/(1.5 x 10) = 66.66 J/kg-C.