Gas Laws Calculator

Solve for variables using the Ideal Gas Law (PV = nRT).
Calculator
Enter your values
Results
Result (P)
1.0011 atm
P = nRT / V
Analysis
Interpretation of the current calculator output

Calculation Summary

The current inputs have been processed for the gas laws calculator. Review the results panel for the computed output and use the charts tab to compare the current values visually.

How to Read It

The main result shows the direct answer for your current inputs. Supporting sections below explain the method, example, and common questions so the result is easier to interpret.

How to Use

Step-by-step instructions
  1. 1Select the variable to solve for.
  2. 2Enter the known values.
  3. 3The calculator computes the unknown variable.

Ideal Gas Law

Relates pressure (P), volume (V), amount of substance (n), and temperature (T) using the gas constant R.
PV = nRT

Variables:

PPressure (atm)
VVolume (L)
nMoles (mol)
TTemperature (K)
R0.0821 L·atm/mol·K

Example

Standard Conditions

Inputs:

n:1 mol
T:273.15 K
P:1 atm

Steps:

  1. 1.V = (1 × 0.0821 × 273.15) / 1
  2. 2.V ≈ 22.4 L
Result:
22.4 L

Frequently Asked Questions

What units should I use?

This calculator uses standard units: Pressure in atm, Volume in Liters, and Temperature in Kelvin. Ensure your inputs match these units.