What this calculator does
Solve pressure, volume, amount, or absolute temperature for an ideal gas in SI units.
How it works
The calculator evaluates PV = nRT, with R = 8.31446261815324 J·mol⁻¹·K⁻¹. Inputs are checked before calculation, and invalid values such as zero denominators or out-of-range selections produce a clear error instead of a misleading result.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
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?solveFor=Solve forChoice · Required · Default: pressure · Accepted values: pressure, volume, moles, temperature
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?pressure=Pressure P (Pa)Number · Required · Default: 101,325
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?volume=Volume V (m³)Number · Required · Default: 0.024465
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?moles=Amount n (mol)Number · Required · Default: 1
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?temperature=Temperature T (K)Number · Required · Default: 298.15
Outputs
3-
resultSolved valueNumber · Primary output
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unitUnitText
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gasConstantGas constant usedText
Inputs and results
The inputs are Solve for, Pressure P (Pa), Volume V (m³), Amount n (mol), Temperature T (K). Results include Solved value, Unit, Gas constant used.