Charles’s Law Calculator
🔥 Heat & thermodynamics. Use the Charles’s law (gases) formula to find new volume, starting volume, starting temperature, new temperature: pick the value you want, type the others, and the answer updates as you go.
Constant pressure; T in kelvin.
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 |
|---|---|
| New volume | m³ |
| Starting volume | m³ |
| Starting temperature | K |
| New temperature | K |
Worked example
Find the new volume when Starting volume = 0.002 m³, Starting temperature = 300 K, New temperature = 330 K.
Using V1/T1 = V2/T2: New volume = 0.0022 m³.
Frequently asked questions
What is the formula for Charles’s law (gases)?
V1/T1 = V2/T2. Constant pressure; T in kelvin.
What do the letters stand for, and what units are used?
New volume in m³, Starting volume in m³, Starting temperature in K, New temperature in K.
How do you calculate new volume?
Put the values into V1/T1 = V2/T2. For example, with Starting volume = 0.002 m³, Starting temperature = 300 K, New temperature = 330 K, new volume = 0.0022 m³.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (new volume, starting volume, starting temperature, new temperature) and fill in the others: it rearranges the formula for you.
