Convert Hundred-Cubic Foot (100 ft³) to Ton Register (ton reg) instantly.
About these units
Hundred-Cubic Foot (100 ft³)
This is simply another expression of 100 cubic feet, used in billing systems, engineering calculations, and pipeline monitoring. Where the abbreviation CCF is standard for water utilities, many technical publications explicitly use "100 ft³" to avoid ambiguity. Engineers working on ventilation systems, gas pipelines, or storage capacities may choose this form for clarity in calculations. Its simplicity and direct reference to cubic feet make it a universally understood expression in industries that rely on imperial volume measurement.
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.