Ideal Gas Law Table: Pressure (P) by Amount of gas (n)
Reference table of pressure (p) for Ideal Gas Law across a range of amount of gas (n) values — exact, engine-computed figures you can read off at a glance.
Ideal Gas Law Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Pressure (P)
1.0001
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Ideal Gas Law Calculator
The Ideal Gas Law Calculator works out your pressure (p) in an instant. Enter amount of gas (n), temperature (t) and volume (v) 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 amount of gas (n).
- Enter the temperature (t).
- Enter the volume (v).
- Read off your pressure (p) — the calculator updates automatically, with no button to press.
Formula
The Ideal Gas Law Calculator uses the formula:
Pressure (P) = Amount of gas (n) × 0.082057 × Temperature (T) ÷ Volume (V)
Worked example
For example, with amount of gas (n) of 1 mol, temperature (t) of 273 K and volume (v) of 22.4 L, the pressure (p) is 1.0001.
| Amount of gas (n) | 1 mol |
|---|---|
| Temperature (T) | 273 K |
| Volume (V) | 22.4 L |
| Pressure (P) | 1.0001 |
|---|
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
It relates pressure, volume, amount and temperature: PV = nRT. Solving for pressure gives P = nRT ÷ V.
It uses R = 0.082057 L·atm/(mol·K), so the pressure comes out in atmospheres with volume in litres and temperature in kelvin.
Gas laws use absolute temperature. Convert Celsius to kelvin by adding 273.15 before entering it.
At 273 K and a volume of 22.4 litres, one mole of an ideal gas is at about 1 atmosphere, which the default values show.
The Ideal Gas Law Calculator uses the formula: Pressure (P) = Amount of gas (n) × 0.082057 × Temperature (T) ÷ Volume (V). For example, with amount of gas (n) of 1 mol, temperature (t) of 273 K and volume (v) of 22.4 L, the pressure (p) is 1.0001.
Enter the amount of gas (n). Enter the temperature (t). Enter the volume (v). Read off your pressure (p) — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Ideal Gas Law: Formula, Steps & Examples
Learn how to calculate Ideal Gas Law — the formula explained step by step, with worked examples and a free calculator to check your answer.