VolLab

Rectangular Prism (Box) Volume Calculator

The most common volume calculation there is.

Same idea as rectangle area, one dimension up

A box's volume is just its footprint area (length × width) multiplied by height — the natural 3D extension of a rectangle's 2D area formula.

Used constantly in shipping and storage

Box volume determines shipping costs, storage capacity, and material needed for packaging — it's one of the most frequently needed real-world geometry calculations.

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VolLab

Rectangular Prism (Box) Volume Calculator

The most common volume calculation there is.

Length

Width

Height

Volume

160

Surface area: 184
Space diagonal: 10.247

What you entered

Length: 8Width: 5Height: 4

1
Volume = l × w × h
8 × 5 × 4= 160
2
Surface area = 2(lw + lh + wh)
2 × (40 + 32 + 20)= 184
3
Space diagonal
√(8² + 5² + 4²)= 10.247

Result

Volume: 160

A 8 × 5 × 4 box has a volume of 160 and a surface area of 184.

Same idea as rectangle area, one dimension up

A box's volume is just its footprint area (length × width) multiplied by height — the natural 3D extension of a rectangle's 2D area formula.

Used constantly in shipping and storage

Box volume determines shipping costs, storage capacity, and material needed for packaging — it's one of the most frequently needed real-world geometry calculations.