Calor específico (Q=mcΔT)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The specific heat calculator computes the thermal capacity of a material using the formula c = Q/(m·ΔT), where c is specific heat, Q is the heat transferred, m is mass, and ΔT is the temperature change. This tool is essential for determining how much energy is required to raise or lower the temperature of a substance by 1°C per gram. It is widely used in chemistry experiments, thermal engineering, and industries handling materials under varying temperature conditions.
To use the calculator, input three values: heat quantity (Q), material mass (m), and temperature change (ΔT). The rearranged formula allows calculating any variable if the other two are known. For example, if you need to find the mass of a substance after applying heat and measuring temperature change, adjust the data according to the formula. The most common unit for specific heat in the SI system is J/(g·°C).
Ensure all units are compatible before performing calculations. Common errors arise when heat units (Joules, calories, etc.) or temperature units (°C, K) are not standardized. Additionally, the sign of the temperature change (ΔT) indicates whether heat is absorbed (positive ΔT) or released (negative ΔT). If the material is undergoing a phase change, the formula does not apply directly, as specific heat in such cases depends on other factors.
Frequently asked questions
Why does the specific heat formula use temperature change (ΔT)?
Temperature change (ΔT) measures the difference between the final and initial temperatures of the material, indicating the change caused by heat. This allows precise calculation of the energy required to heat or cool the substance.
How to measure heat quantity (Q) in an experiment?
Heat quantity (Q) can be measured using calories or Joules. In labs, calorimeters are used to determine Q based on thermal equilibrium between the system and the environment.
What units should be used to ensure calculation accuracy?
Use compatible units such as Joules (J) for Q, grams (g) for mass, and °C for temperature. Convert values to the same system before inputting them into the calculator.
What are practical applications of specific heat calculations?
This calculation is used in food industries (for pasteurization), material engineering (to select insulating materials), and environmental studies (to analyze heat retained by water bodies).