CHEMISTRY / GASES

Combined Gas Law Calculator

Calculate final pressure for a fixed amount of ideal gas across two states. Inspect the chemical relationship, substituted values, result, assumptions, and unit convention in one guided workspace.

01 Calculated in this tab
02 Values stay in this browser tab
03 Use boundary

Use boundary

Calculation path

Calculate final pressure for a fixed amount of ideal gas across two states. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

P_2 = P_1V_1T_2/(T_1V_2)

What you provide

Initial pressure expressed in atm, using the same scenario as the other inputs
Initial volume expressed in L, using the same scenario as the other inputs
Initial temperature expressed in K, using the same scenario as the other inputs
Final volume expressed in L, using the same scenario as the other inputs
Final temperature expressed in K, using the same scenario as the other inputs

What you receive

Final pressure in atm from the stated equation
A symbolic formula plus substituted working with your values
Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

Gas amount is fixed, temperatures are absolute, and behavior is ideal.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

OpenStax Chemistry 2e

Combined Gas Law Calculator

Calculation path

What you provide

What you receive

Choose the maximum decimal places shown. This does not increase source accuracy.

Reviewed reference factors

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