Physics

Heat Energy Calculator

Find heat to change a substance's temperature.

Mass

Specific heat (J/kg·°C)

Temperature change (°C)

Calculated Output

Heat energy (J) 251,160

Heat energy (kJ) 251.16

Formula: Q = m · c · ΔT

Step-by-Step Breakdown

1. Values used:

2. Mass = 2

3. Specific heat = 4,186 J/kg·°C

4. Temperature change = 30 °C

6. Heat energy = Mass x Specific heat x Temperature change = 2 x 4,186 x 30 = 251,160J

7. Heat energy = 251.16kJ

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The math behind it

Q = mass × specific heat × temperature change. Water's specific heat is 4,186 J/kg·°C.

2 kg water +30 °C → 251,160 J.

Phase change?

Use latent heat (Q = mL) — temperature doesn't change during it.