Convert Ton Register (ton reg) to Cup (Metric) (cup) instantly.
About these units
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.
Cup (Metric) (cup)
A metric cup is defined as 250 mL, differing from both the US cup (236.588 mL) and the UK cup (284 mL). Used extensively in Australia, New Zealand, Canada (informally), and some European cooking contexts, the metric cup provides a clean, simple unit that aligns perfectly with decimal scaling. Its adoption reduces confusion in international recipe exchange and demonstrates the value of standardization for global culinary communication.