Heat Energy Calculator
Calculate heat energy transferred using Q = mcΔT. Determine how much heat is needed to change a substance's temperature.
Water: 4186
Enter values to calculate heat.
Heat Formula
Q = m × c × (T_final − T_initial) = m × c × ΔT
Example: Heat 2 kg of water from 20°C to 80°C.
Q = 2 × 4186 × (80−20) = 2 × 4186 × 60 = 502,320 J (502.3 kJ)
Q = 2 × 4186 × (80−20) = 2 × 4186 × 60 = 502,320 J (502.3 kJ)
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Last updated: 2026-08-08