Ideal Gas Law Calculator: PV=nRT Solver
Instantly solve for pressure, volume, moles, or temperature with our free online Ideal Gas Law calculator. An essential tool for chemistry and physics students. For simpler pressure-volume problems, try our Boyle's Law Calculator.
Ideal Gas Law Calculation (PV=nRT)
Select the value you want to solve for.
Note on Units
This calculator uses SI units. Ensure your inputs are in Pascals (Pa) for pressure, cubic meters (m³) for volume, and Kelvin (K) for temperature. The gas constant (R) is fixed at 8.314 J/(mol·K).
How to Use the Calculator
- Select Variable: Choose the value you want to solve for (Pressure, Volume, Moles, or Temperature).
- Enter Knowns: Input the three other values in the correct SI units.
- Calculate: Click "Calculate" to see the result for the unknown variable.
- Use SI Units: Ensure all inputs conform to SI units (Pa, m³, mol, K).
Example Calculation
Imagine you have 1 mole of an ideal gas at a pressure of 101325 Pa and a temperature of 273.15 K (STP conditions). What is its volume?
- P = 101325 Pa, n = 1 mol, T = 273.15 K
- V = ?
Our calculator will show that the volume (V) is approximately 0.0224 m³ (or 22.4 Liters).
Frequently Asked Questions
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