Convert Cubic Decimeter (dm³) to Ton Register (ton reg) instantly.
About these units
Cubic Decimeter (dm³)
A cubic decimeter is defined as 1 liter, since it is the volume of a cube 10 centimeters per side. Though equivalent to the liter, dm³ is often used in engineering and physics because it fits neatly into the SI geometric framework. This unit is convenient when working with densities (kg/dm³), where the equivalence of 1 dm³ and 1 L simplifies many calculations involving fluids and materials. While the liter dominates everyday usage, the cubic decimeter is favored in technical contexts where a strong geometric interpretation is needed—for example, in tank sizing, volumetric flow calculations, or experiments involving water displacement.
Ton Register (ton reg)
A register ton, or ton register, is a unit of volume, not mass, equal to 100 cubic feet. It is used in maritime contexts to measure the internal capacity of ships—specifically cargo-carrying volume, not weight. Ship registries rely on register tons to calculate taxes, port fees, and cargo classifications. The unit dates back to 19th-century maritime law, where consistent volumetric measurement was critical for international shipping regulation. Despite changes in global trade and containerization, register tons remain important for historical vessel documentation, as well as for understanding older merchant and naval ship specifications.