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Litres per Minute to Cubic Metres per Hour Converter

Litres per minute (L/min) and cubic metres per hour (m³/h) both measure volumetric flow — how much fluid passes a point over time — just in different units.

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How to use this calculator

Enter Values

Enter your values and press Calculate to see results.

How to use this calculator

  1. Enter your flow in ONE field only — litres per minute (L/min) or cubic metres per hour (m³/h). Leave the other blank.
  2. Read the highlighted result plus the extra equivalents (L/s, m³/min, L/h) that appear underneath.
  3. To go the other way, clear the field you used and type your value into the other one.

How it works

Litres per minute (L/min) and cubic metres per hour (m³/h) both measure volumetric flow — how much fluid passes a point over time — just in different units. To convert, you reconcile the volume unit and the time unit. One litre is 0.001 cubic metres, and one minute is 1/60 of an hour, so multiplying a L/min figure by 60/1000 gives the m³/h figure: m³/h = L/min × 0.06.

Going the other way, one cubic metre is 1000 litres and one hour is 60 minutes, so L/min = m³/h × 1000/60 = m³/h × 16.6667. These are exact conversion factors — no fluid properties, temperature or pressure are involved, because volumetric flow ignores density. This tool converts only one value at a time and also reports litres per second, cubic metres per minute and litres per hour for the same flow.

Worked example

Convert a 120 L/min pump duty to m³/h. A booster pump is rated at 120 litres per minute. Enter 120 in the L/min field and leave m³/h blank. The converter multiplies by 0.06 to give 7.2 m³/h. It also shows 2 L/s, 0.12 m³/min and 7,200 L/h, so you can match whichever unit a data sheet or pipe-sizing chart uses.

Common mistakes

  • Confusing the two factors — multiply L/min by 0.06 to get m³/h, and multiply m³/h by 16.6667 (not 0.06) to get L/min.
  • Mixing up volumetric flow with mass flow (kg/h). This converter handles volume only; converting to mass needs the fluid's density.
  • Filling in both fields at once — enter your value in a single field and let the tool compute the other, otherwise the result is ambiguous.

Frequently asked questions

What is the L/min to m³/h conversion factor?

Multiply litres per minute by 0.06 to get cubic metres per hour. This comes from 1 litre = 0.001 m³ and 60 minutes = 1 hour, so the factor is 60 ÷ 1000 = 0.06. For example, 120 L/min × 0.06 = 7.2 m³/h.

How do I convert m³/h back to L/min?

Multiply cubic metres per hour by 16.6667 (which is 1000 ÷ 60). For example, 10 m³/h × 16.6667 = 166.667 L/min. That is the same as dividing by 0.06.

Does temperature or fluid density affect this conversion?

No. Both units express volumetric flow, so the conversion is a fixed geometric ratio and does not depend on the fluid, its density, temperature or pressure. Density only matters if you need mass flow (for example kg/h).

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