Work out the volume of common 3D shapes. Pick a shape, enter its measurements, and get the volume instantly.
Volume Calculator
Calculate the exact volume, total surface area, and liquid capacity (litres & gallons) of cylinders, spheres, and rectangular boxes.
Select 3D shape & dimensions
Switch between Cylinder, Sphere, and Rectangular Box.
Your result will appear here
Enter your values above, then press Calculate Volume — or press Enter in any field.TinyExe · Volume Result
3D cubic volume, surface area & liquid capacity
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Name
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3D Solid
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Volume (V)
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Surface Area
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How this was calculated
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Enter all dimensions in the same unit (e.g. all in cm, m, in, or ft). If entered in cm, 1,000 cm³ = 1 Litre.
3D Volume & Surface Area Formulas
Standard geometric formulas for common three-dimensional solids.
| 3D Solid | Volume Formula (V) | Total Surface Area (SA) |
|---|---|---|
| Cylinder | V = π × r² × h | SA = 2πr(r + h) |
| Sphere | V = (4/3) × π × r³ | SA = 4 × π × r² |
| Rectangular Box | V = l × w × h | SA = 2(lw + lh + wh) |
| Cube (side a) | V = a³ | SA = 6a² |
The formula
Rotational and prismatic volume equations.
Cylinder & Prism Volume
Any right prism or cylinder has volume equal to the area of its base multiplied by its perpendicular height.
Sphere Volume
Archimedes proved that a sphere occupies exactly two-thirds the volume of its circumscribing cylinder.
Worked examples
Worked 3D volume examples.
Example 1 · Cylinder
r = 5 cm, h = 12 cm
Standard cylindrical container.
| Calculation | Steps |
|---|---|
| Base = π(5²) = 78.54 cm² | Circular cross-section. |
| V = 78.54 × 12 = 942.48 cm³ | Equals 0.942 litres. |
942.48 cm³
Example 2 · Sphere
Radius r = 6 cm
Spherical ball volume.
| Calculation | Steps |
|---|---|
| r³ = 6³ = 216 | Cube the radius. |
| V = (4/3)π(216) = 904.78 cm³ | Surface area = 452.39 cm². |
904.78 cm³
Example 3 · Box
10 × 8 × 6 cm
Shipping carton volume.
| Calculation | Steps |
|---|---|
| 10 × 8 × 6 = 480 cm³ | Multiply the three edges. |
| SA = 2(80+60+48) = 376 cm² | Total surface area. |
480 cm³
How to use this calculator
Pick your 3D solid
Select Cylinder, Sphere, or Box / Prism.
Enter the dimensions
Provide positive measurements in the same unit.
Press Calculate Volume
Read cubic volume, surface area, and liquid capacity.
Frequently asked questions
How do I calculate the volume of a cylinder?
Square the radius r, multiply by height h, and multiply by π (V = πr²h).
How do I convert cubic centimetres (cm³) to litres?
Divide cubic centimetres by 1,000 (1,000 cm³ = 1 L).
