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Ideal gas law
Ideal gas law: formula, units and explained result. No account required. Processing stays in your browser.
P = nRT/V; R = 8.314462618 J/(mol·K)
Ideal gas model. Positive absolute temperature and volume.
How to use this calculator
- Identify the quantities and convert them to the units shown.
- Apply the formula first, then compare with the substitution and result.
- Check the assumptions and whether the order of magnitude makes sense.
Levels are approximate topic groupings, not a complete curriculum for every country. Numerical results are rounded and may lose precision for extreme or nearly singular inputs.
A practical example
Use these sample inputs to check the calculation before entering your own values.
- Amount (mol)
- 1
- Temperature (K)
- 300
- Volume (m³)
- 0.025
Result for this example
- Pressure
- 99773.551416 Pa