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Liters/minute (L/min)

Definition: Liters per minute (symbol: L/min or LPM) is a metric unit of volumetric flow rate that measures the volume of a fluid (one liter) passing a specific point in one minute.

History/origin: This unit is a direct combination of the metric unit for volume (the liter) and the universal unit of time (the minute). It was adopted for practical everyday flow measurements.

Current use: LPM is widely used to measure water flow in household plumbing (faucets, showers), medical oxygen delivery systems, and laboratory liquid pumps.

Cubic meters/hour (m³/h)

Definition: Cubic meters per hour (symbol: m³/h) is a metric unit of volumetric flow rate equivalent to the volume of a cube with one-meter sides flowing every hour.

History/origin: As industries grew, measuring large volumes of water or gas in liters per second resulted in numbers that were too large to track easily. m³/h was adopted to simplify large-scale measurements.

Current use: It is the standard unit for large-scale industrial fluid dynamics, municipal water supply networks, natural gas distribution, and major HVAC chiller systems.

Liters/minute (L/min) to Cubic meters/hour (m³/h) Conversion Table

Liters/minute (L/min) [lpm]Cubic meters/hour (m³/h) [m3h]
0.01 lpm0.0006 m3h
0.1 lpm0.006 m3h
1 lpm0.06 m3h
2 lpm0.12 m3h
3 lpm0.18 m3h
5 lpm0.3 m3h
10 lpm0.6 m3h
20 lpm1.2 m3h
50 lpm2.99999999 m3h
100 lpm5.99999999 m3h
1000 lpm59.99999988 m3h

How to Convert Liters/minute (L/min) to Cubic meters/hour (m³/h)

1 lpm = 0.06 m3h
1 m3h = 16.6666667 lpm

Example: convert 15 lpm to m3h:
15 lpm = 15 × 0.06 m3h = 0.9 m3h

Did You Know?

  • A standard modern showerhead uses about 9.5 Liters per minute (L/min) to save water, whereas older ones used up to 20 L/min!
  • Cubic meters per hour (m³/h) is widely used in large-scale municipal water supplies and natural gas pipelines to measure massive distribution networks.
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