Ideal Gas Law Calculator
Calculate temperature using PV = nRT. Enter pressure, volume, and moles to find the temperature.
How to Use the Ideal Gas Law Calculator
- Enter the gas pressure in pascals.
- Enter the volume in liters.
- Enter the amount of substance in moles to find the temperature.
Quick Reference
| From | To |
|---|---|
| 1 atm, 22.4 L, 1 mol | T ≈ 273 K (0 °C) |
| 101325 Pa, 1 L, 0.0446 mol | T ≈ 273 K |
| R | 8.314 J/(mol·K) |
| STP | 0 °C, 101,325 Pa |
| Molar volume at STP | 22.414 L/mol |
Use Cases
- •Chemistry gas law problems.
- •Engineering thermodynamics calculations.
- •Atmospheric science and meteorology.
Formula
PV = nRT → T = PV/(nR), where P is pressure (Pa), V is volume (m³, input in L), n is moles, R = 8.314 J/(mol·K).
Frequently Asked Questions
What is the ideal gas law?
PV = nRT relates pressure, volume, amount, and temperature of an ideal gas through the universal gas constant R.
What is the gas constant R?
R = 8.31446 J/(mol·K), the universal gas constant.
Is this calculator free?
Yes, all OhMyCalc calculators are completely free.