Ideal Gas Law Calculator: PV = nRT Solver

Ideal Gas Law Calculator

PV = nRT • Solve one unknown • Unit conversion • Ajax loading

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🧮 Gas constant (R)

Choose SI if you prefer Pa + m³. Choose L·atm if you prefer atm + L.

Quick summary

Fill any 3 fields (P, V, n, T). Leave 1 empty to solve it.

🧯 Pressure (P)

Leave empty if P is the unknown.

📦 Volume (V)

Leave empty if V is the unknown.

⚛️ Amount (n)

Leave empty if n is the unknown.

🌡️ Temperature (T)

Temperature must be > 0 K. Leave empty if T is the unknown.

Solved variable

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Value (in selected units)

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Consistency check (PV vs nRT)

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Shows ratio PV/(nRT). Ideal consistency is ~1.

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Hard reset: cancels pending updates and clears everything on the first click.

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