Enter any three of the four values (volume, length, height and depth) using consistent units, then click calculate to get the remaining one.
A rectangular prism (box) is one of the most common 3D solids, appearing in shipping boxes, rooms, containers and many everyday objects.
If l is length, h is height and d is depth (or width), then the volume formula is V = l × h × d. This calculator is built directly on that simple but very useful formula.
When volume V and two side lengths are known, you can find the remaining side from expressions such as l = V ÷ (h × d). If all three side lengths are known, volume is simply V = l × h × d. As long as you keep the same unit (cm, m, etc.), the result has clear physical meaning.
All inputs must be greater than 0. If the volume is tiny but side lengths are large, or the volume is huge while side lengths are very small, it may indicate inconsistent units or input errors.
V = length l × height h × depth d.
Yes. Multiply the three side lengths to get the volume.
V = 5 × 4 × 3 = 60.
Height h = 120 ÷ (5 × 4) = 6.
Because volume is the product of three lengths; if units differ, the result is not meaningful.
Shipping and packaging, warehouse capacity estimation, room space calculation, aquarium or tank capacity and more.
That is not physically valid for a real box, and this tool will report that the value must be greater than zero.
A cube has all edges equal, so V = a³, while a rectangular prism can have three different edge lengths.
Compute the big box volume and the small box volume, then compare their ratio as a rough upper bound (exact packing also depends on orientation and gaps).
It allows fast trial of many size combinations, reduces arithmetic mistakes and speeds up design and planning.
This tool lets you calculate the fourth value from any three of volume, length, height and depth. Useful for packaging, storage and geometry problems.
Scan the QR code to use this tool on mobile.