Gas Volume Corrections Calculator

Corrects gas volume for pressure, temperature, and water-vapor pressure using the combined gas law.

Inputs

Color mode links each input to the matching equation term and solving arithmetic.

Equation and Work

Equation:
Solving steps:
Corrected volume
—
mL
Effective P1
—
mmHg
Effective P2
—
mmHg

Clinical Significance

Gas volume correction applies the combined gas law to adjust gas volume for pressure and temperature. The 273 constant converts Celsius to Kelvin, and water-vapor pressure is subtracted when the gas is saturated rather than dry.

Used when precise gas volume correction is required rather than table-factor approximation.

Temperatures are converted to kelvins internally. Verify PH₂O values for the measurement temperature.

References (APA 7th Edition)

  1. Chang, D. W. (2020). Respiratory Care Calculations (Revised 4th ed.). Jones & Bartlett Learning. Formula content adapted from the uploaded text/reference packet.