Sensible heat is the heat you can “sense” with a thermometer – it changes temperature. Heating water for a bath, warming a room or cooling a hot engine block are all sensible-heat processes.
How to use the Sensible Heat Calculator
- Material
- Specific heat c
- Mass m
- Initial temperature
- Final temperature
Results update as you type, every field has its own unit menu, and everything is calculated in your browser.
How it works
Choose the material, enter the mass and the temperatures.
Tips
- Use absolute temperature (K) in gas laws and efficiency formulas.
- Temperature differences are the same in K and °C.
- Heat = mass × specific heat × temperature change when no phase change occurs.
- Phase changes need latent heat at a constant temperature.
Common mistakes to avoid
- Using °C in pV = nRT.
- Forgetting latent heat during melting or boiling.
- Confusing heat capacity (J/K) with specific heat (J/(kg·K)).
Inputs explained
| Field | What to enter |
|---|---|
| Material | Choose one: Water, Ice, Steam, Air … |
| Specific heat c | Units: J/(kg·K), kJ/(kg·K), J/(g·K), BTU/(lb·°F), cal/(g·°C) |
| Mass m | Units: kg, g, mg, t, lb, oz |
| Initial temperature | Units: °C, °F, K |
| Final temperature | Units: °C, °F, K |
Example values
How the main result changes when Specific heat c changes and everything else stays at the example values above:
| Specific heat c (J/(kg·K)) | Sensible heat Q (J) |
|---|---|
| 500 | 1,881,900 |
| 750 | 1,881,900 |
| 1,000 | 1,881,900 |
| 1,250 | 1,881,900 |
| 1,500 | 1,881,900 |
| 2,000 | 1,881,900 |
Formula
Q = m·c·(T_f − T_i)Worked example
Inputs — Material: Water; Mass m: 10 kg; Initial temperature: 15 °C; Final temperature: 60 °C.
Results — Sensible heat Q = 1,881,900 J; Heat = Absorbed.
Key terms
- Sensible heat
- Heat that changes temperature.
Frequently asked questions
What is the difference between sensible and latent heat?
Sensible heat changes temperature; latent heat changes phase.
How much energy heats 10 L of water by 45 °C?
About 1.9 MJ (0.52 kWh).
Why does water need so much heat?
Its specific heat is unusually high.
Can I use this across a phase change?
No – add latent heat separately.
What formula does the Sensible Heat Calculator use?
Q = m·c·(T_f − T_i).