Chemistry calculator
Ideal Gas Law Calculator
Solve the ideal gas law for temperature using liters and atmospheres.
Uses R = 0.082057 L·atm·mol⁻¹·K⁻¹ and solves PV = nRT for temperature.
Temperature
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How it works
The ideal-gas model is most accurate at relatively low pressure and high temperature, away from condensation.
T = PV ÷ nR, where R = 0.082057 L·atm·mol⁻¹·K⁻¹
Worked example
At 1 atm, 22.414 L, and 1 mol, the result is about 273.15 K.
How to use this tool
- Enter the known values and choose units where available.
- Check the primary result and supporting details.
- Clear or replace an input to calculate another case.
Frequently asked questions
What happens with invalid or incomplete inputs?
The result remains blank until the required inputs form a finite, meaningful calculation. Zero denominators and physically impossible negative quantities are not calculated.
Can I use decimal values?
Yes. The tool accepts decimals and keeps full precision for the calculation while rounding the displayed result for readability.