Charles's Law Calculator
💨 Gas Laws & Fluids. Use the Charles's law formula to find volume 1, temperature 1, volume 2, temperature 2: pick the value you want, type the others, and the answer updates as you go.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Volume 1 | L |
| Temperature 1 | K |
| Volume 2 | L |
| Temperature 2 | K |
Worked example
Find the volume 1 when Temperature 1 = 300 K, Volume 2 = 1.2 L, Temperature 2 = 360 K.
Using V1/T1 = V2/T2: Volume 1 = 1 L.
Frequently asked questions
What is the formula for Charles's law?
V1/T1 = V2/T2.
What do the letters stand for, and what units are used?
Volume 1 in L, Temperature 1 in K, Volume 2 in L, Temperature 2 in K.
How do you calculate volume 1?
Put the values into V1/T1 = V2/T2. For example, with Temperature 1 = 300 K, Volume 2 = 1.2 L, Temperature 2 = 360 K, volume 1 = 1 L.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (volume 1, temperature 1, volume 2, temperature 2) and fill in the others: it rearranges the formula for you.
