Charles Law Calculator
Calculate final gas volume at constant pressure.
Charles Law measurements
Enter your values, then calculate.
Result
How to calculate charles law
Charles's Law describes how a gas's volume changes with temperature at constant pressure — volume and temperature are directly proportional.
How the calculation works
V2 = V1 × (T2 ÷ T1), with temperatures in Kelvin.
Example
2 L at 300K heated to 350K: 2×(350÷300) ≈ 2.33 L.
Frequently asked questions
How is Result calculated?
Result = [Initial volume] × [Final temperature] ÷ [Initial temperature].
Is the Charles Law Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Charles Law Calculator
V2 = V1 × (T2 ÷ T1), with temperatures in Kelvin.
Let's understand your charles law result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Charles Law
- Temperatures must be in Kelvin — using Celsius directly will give an incorrect result since Charles's Law relies on the absolute temperature scale.
- This law only holds at constant pressure and for a fixed amount of gas.
Common Charles Law Mistakes to Avoid
- Using Celsius temperatures directly instead of converting to Kelvin first, since the proportionality only works with absolute temperature.
When to Use This Calculator
Charles's Law describes how a gas's volume changes with temperature at constant pressure — volume and temperature are directly proportional.