Volumetric Flux
LMHtoL/m²/day
Convert litres per square metre per hour (LMH) to litres per square metre per day (L/m²/day).
Factor1 LMH = 24 L/m²/day
Converter
LMH
Accepts numbers or expressions, e.g. 150 + 14.7
Result
L/m²/day
Rendered to 6 significant figures.
Formula
Formula
L/m²/day = LMH × 24
Multiply any value in litres per square metre per hour by 24 to obtain the value in litres per square metre per day.
Worked example
Convert 1 LMH to L/m²/day.
- 01Start with 1 LMH.
- 02Multiply by the conversion factor: 1 × 24 = 24 L/m²/day.
Result1 LMH = 24 L/m²/day
Conversion table
| LMH | L/m²/day |
|---|---|
| 1 | 24 |
| 2 | 48 |
| 5 | 120 |
| 10 | 240 |
| 20 | 480 |
| 50 | 1200 |
| 100 | 2400 |
| 200 | 4800 |
| 500 | 12000 |
| 1000 | 24000 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from LMH to L/m²/day?
1 LMH equals 24 L/m²/day. To convert, multiply the value in litres per square metre per hour by 24.
How do I convert 1 LMH to L/m²/day?
1 LMH = 24 L/m²/day. For any value, multiply by 24.
How do I convert L/m²/day back to LMH?
Divide by the same factor — or equivalently, multiply by 0.04166667. So 1 L/m²/day = 0.0416667 LMH.
When would I need to convert litre per square metre per hour to litre per square metre per day?
Volumetric-flux conversions between LMH and L/m²/day 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
- L/m²/day → LMHlitre per square metre per day → litre per square metre per hour
- m/s → LMHmetre per second (volumetric flux) → litre per square metre per hour
- LMH → m/slitre per square metre per hour → metre per second (volumetric flux)
- m³/m²/s → LMHcubic metre per square metre per second → litre per square metre per hour
- LMH → m³/m²/slitre per square metre per hour → cubic metre per square metre per second
- m³/m²/h → LMHcubic metre per square metre per hour → litre per square metre per hour