Calculate 3D volume for common solids with shape-specific dimensions, clear formulas and liquid-volume equivalents.
01 / SHAPE & UNITS
02 / DIMENSIONS
Use positive dimensions in a single length unit. Radius is half the diameter. The triangular prism height is perpendicular to its triangular base.
03 / YOUR RESULT
04 / CALCULATION
10 × 5 × 4 = 200 cm³. Convert lengths to meters first and cube the factor for m³. 1 L = 1,000 cm³; 1 US gallon = 3.785411784 L.
Geometry calculations stay in your browser. Illustrations are schematic, not to scale.
Enter the values you want to compare; processing happens in your browser.
Adjust optional settings and review validation feedback before relying on the estimate.
Review the formulas and equivalent values, then copy the result you need.
Select cube, rectangular prism, cylinder, sphere, cone or triangular prism; enter the required positive dimensions and choose a common length unit.
Six geometric solids with illustrated shapes, formula substitutions, cm³, m³, L, mL, ft³ and US gallon conversions.
All dimensions are processed in browser memory only. Illustrations are schematic, not to scale; no uploads are needed.
Cube, rectangular prism, cylinder, sphere, cone and triangular prism are supported with appropriate dimension fields.
Cylinder, sphere and cone require a radius. Divide a known diameter by two before entering it.
Find the triangular cross-section area using base times perpendicular height divided by two, then multiply by prism length.
Cone volume is π times radius squared times height divided by three; sphere volume is four thirds times π times radius cubed.
One cubic meter is 1,000 liters; one liter is 1,000 milliliters; one US gallon is 3.785411784 liters.
No. The chosen unit changes how entered lengths are interpreted; conversions use exact standard factors in your browser. No data is uploaded.