▸ processconvert
Volumetric Flux

L/m²/daytoLMH

Convert litres per square metre per day (L/m²/day) to litres per square metre per hour (LMH).

Factor1 L/m²/day = 0.04166667 LMH

Converter

L/m²/day

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

Result
1LMH

Rendered to 6 significant figures.

Formula

Formula
LMH = L/m²/day × 0.04166667

Multiply any value in litres per square metre per day by 0.04166667 to obtain the value in litres per square metre per hour.

Worked example

Convert 24 L/m²/day to LMH.

  1. 01Start with 24 L/m²/day.
  2. 02Multiply by the conversion factor: 24 × 0.04166667 = 1 LMH.
Result24 L/m²/day = 1 LMH

Conversion table

L/m²/dayLMH
10.041667
20.083333
50.20833
100.41667
200.83333
502.0833
1004.1667
2008.3333
50020.833
100041.667

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from L/m²/day to LMH?
1 L/m²/day equals 0.04166667 LMH. To convert, multiply the value in litres per square metre per day by 0.04166667.
How do I convert 1 L/m²/day to LMH?
1 L/m²/day = 0.0416667 LMH. For any value, multiply by 0.04166667.
How do I convert LMH back to L/m²/day?
Divide by the same factor — or equivalently, multiply by 24. So 1 LMH = 24 L/m²/day.
When would I need to convert litre per square metre per day to litre per square metre per hour?
Volumetric-flux conversions between L/m²/day 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).

Related conversions