---
title: "Ideal Gas Law Calculator | Chemistry Formula Calculator | XTRAW Tools"
description: "Solve the ideal gas law (PV = nRT) for any unknown variable. Use this free browser-based chemistry calculator from XTRAW Tools for lab, classroom, and STEM estimates."
url: "https://xtraw.com/tools/science-calculators/chemistry-calculators/gas-law-calculators/ideal-gas-law-chemistry-calculator"
date: "2026-06-24T23:31:05+00:00"
language: "en-GB"
---

[Gas Law Calculator](https://xtraw.com/tools/calculators/science-calculators/chemistry-calculators/gas-law-calculators/gas-law-calculator)[Avogadro's Number Calculator](https://xtraw.com/tools/calculators/science-calculators/chemistry-calculators/gas-law-calculators/avogadros-number-calculator)

 [![Ideal Gas Law Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/xtraw-ideal-gas-law-chemistry-calculator-360x360.jpg)](https://xtraw.com/images/virtuemart/product/xtraw-ideal-gas-law-chemistry-calculator-360x360.jpg "Ideal Gas Law Calculator from XTRAW Tools")

  new

 [Back to: Gas Law Calculators](https://xtraw.com/tools/calculators/science-calculators/chemistry-calculators/gas-law-calculators "Gas Law Calculators")

# Ideal Gas Law Calculator

 Solve the ideal gas law (PV = nRT) for any unknown variable. Use this free browser-based ideal gas law calculator from XTRAW Tools.

 **Ideal Gas Law Calculator** helps you solve the ideal gas law (PV = nRT) for any unknown variable. Use this free browser-based calculator from XTRAW Tools to compare inputs, estimate results, and plan your next step.

## How to Use the Ideal Gas Law Calculator

1. Enter the required calculator inputs shown in the form.
2. Review the molecular-weight, mass, yield, concentration, dilution, gas-law, or colligative-property assumptions.
3. Run the calculator, then adjust one input at a time to compare scenarios or check your estimate.

## What This Calculator Helps With

Solve the ideal gas law (PV = nRT) for any unknown variable. It is designed for students, teachers, chemistry learners, lab users, healthcare reference users, STEM tutors, and anyone working with chemistry formulas who want a fast browser-based estimate before relying on a textbook, lab software, chemistry reference, professional source, or specialist.

- Solve for: n
- Pressure (P): 1 atm
- Volume (V): 22.414 L
- Moles (n): 1 mol
- Temperature (T): 273.15 K

## Common Uses

People use this calculator when they need a quick way to estimate moles, gas-law values, particles, pressure, volume, or temperature relationships.

- **Math Solving:** Solve chemistry, concentration, stoichiometry, yield, gas-law, molecular-weight, or solution equations from entered values.
- **Measurement:** Measure molar mass, percent composition, yield, dilution, concentration, normality, particles, osmotic pressure, or boiling point changes.
- **Unit Conversion:** Convert chemistry quantities such as moles, particles, grams, concentration, and related formula values.

## Formula or Method

PV = nRT; R = 0.082057 L·atm/(mol·K)

## Example

**Example inputs:** Solve for: n; Pressure (P): 1 atm; Volume (V): 22.414 L; Moles (n): 1 mol; Temperature (T): 273.15 K

**Example result:** Using PV = nRT with the default inputs, amount of gas is about 1.0000 mol.

## Related Tools

- [Avogadro's Number Calculator](https://xtraw.com/tools/avogadros-number-calculator)
- [Osmotic Pressure Calculator](https://xtraw.com/tools/osmotic-pressure-calculator)
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- [Moles To Grams Calculator](https://xtraw.com/tools/moles-to-grams-calculator)
- [Grams To Moles Calculator](https://xtraw.com/tools/grams-to-moles-calculator)

## Ideal Gas Law Calculator FAQ

### Is the Ideal Gas Law Calculator free?

Yes. This calculator is free to use on XTRAW Tools.

### Do I need to create an account?

No. XTRAW tools are designed for browser-based use without requiring an account.

### Are the results exact?

Results may be estimates depending on the inputs, formula, rounding, chemistry reference values, assumptions, or purpose of the calculator. Always verify important results before relying on them.

**Disclaimer:** This calculator is provided for general informational, educational, and convenience purposes only. It is not medical, laboratory, chemical handling, safety, legal, financial, academic, regulatory, or professional advice. Always verify important results with a qualified professional, instructor, chemist, lab supervisor, safety documentation, authoritative source, or appropriate specialist before making decisions.

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