Convert Ton Register (ton reg) to Megaliter (ML) 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.
Megaliter (ML)
A megaliter is one million liters, equivalent to 1,000 cubic meters. It is used in large-scale water management, including municipal supply systems, reservoirs, agricultural irrigation planning, and hydroengineering. City planners and hydrologists often express daily water consumption in megaliters per day (ML/day). For example, a medium-sized city might use anywhere from 50 to several hundred ML daily. The unit is especially helpful because it bridges the gap between the cubic meter (too small for city-scale usage) and the gigaliter (too large for many practical applications). As water scarcity and climate resilience become critical global issues, the megaliter continues to be a foundational measurement in environmental science and infrastructure planning.