Boyle's Law Table: Final pressure (P2) by Initial pressure (P1)
Reference table of final pressure (p2) for Boyle's Law across a range of initial pressure (p1) values — exact, engine-computed figures you can read off at a glance.
Boyle's Law Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Final pressure (P2)
2.000
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Boyle's Law Calculator
The Boyle's Law Calculator works out your final pressure (p2) in an instant. Enter initial pressure (p1), initial volume (v1) and final volume (v2) and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the initial pressure (p1).
- Enter the initial volume (v1).
- Enter the final volume (v2).
- Read off your final pressure (p2) — the calculator updates automatically, with no button to press.
Formula
The Boyle's Law Calculator uses the formula:
Final pressure (P2) = Initial pressure (P1) × Initial volume (V1) ÷ Final volume (V2)
Worked example
For example, with initial pressure (p1) of 1, initial volume (v1) of 10 and final volume (v2) of 5, the final pressure (p2) is 2.000.
| Initial pressure (P1) | 1 |
|---|---|
| Initial volume (V1) | 10 |
| Final volume (V2) | 5 |
| Final pressure (P2) | 2.000 |
|---|
Results are estimates for educational use, not professional advice.
Key terms explained
- Volume
- The amount of three-dimensional space an object occupies, measured in cubic units.
Frequently asked questions
At constant temperature, a gas's pressure and volume are inversely related: P1V1 = P2V2. Halving the volume doubles the pressure.
Rearrange to P2 = P1 × V1 ÷ V2. Compressing 10 L at 1 atm down to 5 L gives 2 atm.
Temperature and the amount of gas are held constant. Only pressure and volume change, in opposite directions.
It explains how syringes, lungs and pneumatic systems work, and underpins gas behaviour in many everyday and industrial settings.
The Boyle's Law Calculator uses the formula: Final pressure (P2) = Initial pressure (P1) × Initial volume (V1) ÷ Final volume (V2). For example, with initial pressure (p1) of 1, initial volume (v1) of 10 and final volume (v2) of 5, the final pressure (p2) is 2.000.
Enter the initial pressure (p1). Enter the initial volume (v1). Enter the final volume (v2). Read off your final pressure (p2) — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Boyle's Law: Formula, Steps & Examples
Learn how to calculate Boyle's Law — the formula explained step by step, with worked examples and a free calculator to check your answer.