Volume of a Prism Calculator
🧊 Volume & surface area (3D). Use the Volume of a prism formula to find volume, cross-section area, length: pick the value you want, type the others, and the answer updates as you go.
A = the area of the cross-section, l = the length of the prism.
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 | cm³ |
| Cross-section area | cm² |
| Length | cm |
Worked example
Find the volume when Cross-section area = 12 cm², Length = 10 cm.
Using V = A × l: Volume = 120 cm³.
Frequently asked questions
What is the formula for Volume of a prism?
V = A × l. A = the area of the cross-section, l = the length of the prism.
What do the letters stand for, and what units are used?
Volume in cm³, Cross-section area in cm², Length in cm.
How do you calculate volume?
Put the values into V = A × l. For example, with Cross-section area = 12 cm², Length = 10 cm, volume = 120 cm³.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (volume, cross-section area, length) and fill in the others: it rearranges the formula for you.
