Boyle's Law Calculator

Calculate pressure and volume relationship using Boyle's Law (P₁V₁ = P₂V₂) with unit conversion

Boyle's Law Setup

P₁V₁ = P₂V₂ — pick what to solve for

Solve for

P₁ (initial pressure)

V₁ (initial volume)

P₂ (final pressure)

V₂ (final volume)

P₁V₁ = P₂V₂ at constant temperature. Mix units freely — the calculator auto-converts. Leave one field blank and click Calculate.

Result

Enter values to see result

Enter values to see the Boyle's Law calculation.

Boyle's Law states pressure and volume are inversely proportional when temperature is constant. P₁V₁ = P₂V₂ always holds.

How to Use

Select what to solve for :- P₁, V₁, P₂, or V₂
Enter values and units :- Mix units freely (atm, kPa, Pa, mmHg, torr, bar for pressure; L, mL, cm³, m³ for volume)
Click Calculate :- View result with step-by-step formula

Example: P₁=2 atm, V₁=5 L, P₂=4 atm → V₂=2.5 L. When pressure doubles, volume halves.

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