About this tool
The Specific Heat Calculator is a free, in-browser tool that applies the calorimetry equation Q = mcΔT and solves for whichever quantity — heat, mass, specific heat capacity, or temperature change — you leave blank. A dropdown of common substances (water, ice, steam, ethanol, aluminium, iron, copper, gold, lead, air) fills in the specific heat for you, or you can switch to a custom value.
All of the maths runs locally in your browser with nothing uploaded, so your measurements stay private on your device. The result is shown in joules alongside kilojoule and calorie equivalents, and it recalculates live as you edit any field.
Heat Q is in joules (J), mass m in grams (g), specific heat c in J/g°C, and the temperature change ΔT in degrees Celsius (numerically identical to kelvin for a difference). The built-in specific-heat values are near-room-temperature approximations; water is taken as 4.186 J/g°C and the calorie conversion uses the thermochemical calorie of 4.184 J.