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Volumetric Flux

cm/hrtoLMH

Convert centimetres per hour (volumetric flux) (cm/hr) to litres per square metre per hour (LMH).

Factor1 cm/hr = 10 LMH

Converter

cm/hr

Accepts numbers or expressions, e.g. 150 + 14.7

Result
10LMH

Rendered to 6 significant figures.

Formula

Formula
LMH = cm/hr × 10

Multiply any value in centimetres per hour (volumetric flux) by 10 to obtain the value in litres per square metre per hour.

Worked example

Convert 1 cm/hr to LMH.

  1. 01Start with 1 cm/hr.
  2. 02Multiply by the conversion factor: 1 × 10 = 10 LMH.
Result1 cm/hr = 10 LMH

Conversion table

cm/hrLMH
110
220
550
10100
20200
50500
1001000
2002000
5005000
100010000

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cm/hr to LMH?
1 cm/hr equals 10 LMH. To convert, multiply the value in centimetres per hour (volumetric flux) by 10.
How do I convert 1 cm/hr to LMH?
1 cm/hr = 10 LMH. For any value, multiply by 10.
How do I convert LMH back to cm/hr?
Divide by the same factor — or equivalently, multiply by 0.1. So 1 LMH = 0.1 cm/hr.
When would I need to convert centimetre per hour (volumetric flux) to litre per square metre per hour?
Volumetric-flux conversions between cm/hr and LMH are routine in membrane filtration (RO, UF, MF, NF permeate flux), hydraulic loading specification, water-treatment design, hydrometallurgy and packed-bed column loading, and environmental engineering. LMH (L/m²/h) and gfd (gal/ft²/day) dominate membrane datasheets; m³/m²/h and m³/m²/day cover SI engineering ladders; m/day and cm/s appear as superficial velocity in hydromet and packed-bed work. Volumetric flux is the same physical quantity as superficial velocity (m³/m²/s ≡ m/s) but is kept distinct from the velocity and flow categories because the engineering intent is volumetric throughput per unit area, not bulk motion or total throughput.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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