Convert cubic meter/second [m^3/s] to acre-foot/day [ac*ft/d] Online | Free flow Converter

Cubic Meter/Second [m³/s]


Cubic meter per second (m³/s) is a standard unit of volumetric flow rate, representing the volume of a fluid—liquid or gas—that passes through a given cross-sectional area per second. One cubic meter corresponds to a cube with sides of one meter in length, so when measured per second, it quantifies how many such cubic meters move through a system every second. This unit is widely used in hydrology, fluid mechanics, and engineering, including applications such as river flow measurement, pipeline transport, and ventilation systems. In hydrology, for example, the flow of a river or stream is often expressed in m³/s to understand water availability, flood potential, or for designing dams and irrigation systems. In industrial settings, it helps engineers design pumps, fans, and piping systems to ensure efficient transport of fluids. Because it measures volumetric flow, it can be converted into mass flow rate if the fluid’s density is known, enabling calculations related to energy transfer, heating, or cooling. The cubic meter per second is a crucial unit for planning, monitoring, and managing fluid systems, ensuring safety, efficiency, and sustainability in both natural and engineered environments.


Day [ac·ft/d]


Acre-foot per day [ac·ft/d] is a unit of volumetric flow rate used in hydrology, irrigation, and water resource management. One acre-foot represents the volume of water required to cover one acre of land to a depth of one foot, approximately 1,233 cubic meters or 325,851 gallons. When expressed per day, ac·ft/d measures the amount of water delivered, consumed, or flowing through a system in a single 24-hour period. This unit is particularly useful for managing large-scale water distribution systems, such as reservoirs, canals, and municipal water supply networks, allowing engineers to monitor daily water availability and usage. For example, an irrigation canal delivering 50 ac·ft/d provides enough water to cover 50 acres to a depth of one foot in a day, helping farmers plan crop irrigation schedules. It is also used in environmental monitoring, flood management, and industrial water usage planning. Compared to ac·ft/y, acre-foot per day provides short-term resolution, enabling timely operational decisions and adjustments. Using ac·ft/d allows hydrologists, engineers, and water managers to track, regulate, and optimize water flow, ensuring efficient, sustainable, and reliable use of water resources for agriculture, municipal supply, and industry.



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