Calorimetry calculator (specific heat, heat, final temperature)

How to use (3 steps)

Select the mode: single object or mixing two substances.
Enter mass, specific heat, temperatures, or heat. Keep units consistent (kg with J/(kg·K) or g with J/(g·K)).
Press Compute to see the solved value, the full table, and the step-by-step energy balance. Copy URL shares the setup.

Default example: heat 0.10 kg of water from 20 °C to 80 °C (solve for Q). The initial calculation runs automatically.

Inputs

Mode

Single: heat, mass, specific heat, temperature change Mixing: final temperature of two substances

Pick the unknown and leave it blank; the other fields should be filled. For ΔT mode, leave Tf empty to solve ΔT (if you enter Tf, it only checks consistency).

Heat Q Mass m Specific heat c Temperature change ΔT (Tf optional)

Mass m kg

Specific heat c J/(kg·K)

Initial temperature Ti °C

Final temperature Tf °C

Heat Q J Solved automatically

Results

How it is calculated

FAQ

Can this handle phase changes such as melting or boiling?

This calculator assumes constant specific heat and no phase change. To model melting or evaporation, add the latent heat separately.

How should I align the units?

Use matching units such as kg with J/(kg·K) or g with J/(g·K). Mixing units (e.g., kg with J/(g·K)) will give incorrect results. Temperatures may be in °C or K because only differences are used, so ΔT is identical.

Does it consider heat loss to the surroundings?

Mixing mode assumes an insulated system with no heat loss to the container or air. Real experiments may differ because of heat loss or the container's heat capacity.

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