Cuboid Calculator: Instantly Find Volume, Surface Area, and Space Diagonal

A cuboid’s size is easy to pin down: enter three edges, and this tool returns volume, surface area and the long “space diagonal.” A 10 cm × 6 cm × 4 cm block holds 240 cm³, and its diagonal spans 10.77 cm—only √3 (1.732) times an edge when it is a cube (NIST, 2023). Use matching units, round to two decimals, and you can quote the results right away.