Charles' Law Calculator
Calculate final volume given initial volume and temperatures at constant pressure.
How to Use This Calculator
1
Enter V1
Initial gas volume.
2
Enter T1 and T2 (K)
Use absolute temperatures for correct ratios.
3
Calculate V2
Click Calculate to get the final volume.
Formula
V1 / T1 = V2 / T2
Example: V1=2 L, T1=300 K, T2=360 K → V2=2.4 L
About Charles' Law
At constant pressure, gas volume is directly proportional to absolute temperature.
- Gas expansion with heating
- Calibrating gas thermometers
Frequently Asked Questions
Can I use °C?
Convert to K by adding 273.15 before using the formula.
Does pressure stay constant?
Yes, Charles' law assumes constant pressure and moles.