Ton per hour (symbol t/h or t·h⁻¹) is a unit of mass flow that quantifies how many metric tons of material pass a given point each hour, making it essential for measuring the throughput of bulk substances such as coal, ore, water, or chemicals. Widely used in industries like mining, power generation, shipping, and wastewater treatment, the ton‑per‑hour metric enables engineers and managers to size equipment, schedule operations, and monitor efficiency with a clear, standardized figure. In scientific and technical contexts, t/h provides a direct link between mass and time, facilitating calculations of energy consumption, emissions, and process optimization, while its straightforward notation and universal acceptance ensure consistent communication across global supply chains and regulatory frameworks.