Combined Gas Law Calculator
What final pressure follows from volume and temperature changes? Enter the stated inputs to calculate this model.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Initial absolute pressure (Pa) | Enter initial absolute pressure in Pa; use the same basis as the other measurements. |
| Initial volume (m³) | Net volume in cubic metres. Convert cubic units before entering the value; outside dimensions of hollow objects are not net material volume. |
| Initial temperature (K) | Enter initial temperature in K; use the same basis as the other measurements. |
| Final volume (m³) | Net volume in cubic metres. Convert cubic units before entering the value; outside dimensions of hollow objects are not net material volume. |
| Final temperature (K) | Enter final temperature in K; use the same basis as the other measurements. |
Understanding your result
Read Final absolute pressure (Pa) in the units and model stated on this page. The formula p2=p1*V1*T2/(T1*V2) defines the relationship; measurement accuracy and model applicability are separate from numerical precision.
Common mistakes
- Mixing input units or changing the physical meaning of a variable without changing the model.
Check your calculation
- Use the worked example as a known reference case, then change one input at a time and check the direction and units of the response.
Calculation checks, sources and review limits
What final pressure follows from volume and temperature changes?
What final pressure follows from volume and temperature changes? Enter the stated inputs to calculate this model.
Common uses
- What final pressure follows from volume and temperature changes
How it works
p2=p1*V1*T2/(T1*V2)
Worked example
Enter Initial absolute pressure: 100000 Pa; Initial volume: 2 m³; Initial temperature: 300 K; Final volume: 1 m³; Final temperature: 450 K. Results: Final absolute pressure: 300000 Pa.