Liters per minute to meters per second
Type a value in L/min to get it in m/s instantly.
That's 1.64× as fast as a gravity drain, while domestic plumbing is 1.83× faster. Getting water moving that fast costs about 34.17 mm of head.
What it means
How fast is it moving?
Velocities are averages across the bore. At the wall the fluid is stationary and in the middle it moves faster, which is what erodes bends.
The math
How to convert L/min to m/s
Velocity is flow divided by cross-sectional area: v = Q ÷ (π × (bore ÷ 2)²). Because the area goes with the square of the bore, one size up cuts the velocity to less than half. The figures below use the bore selected above.
Example: 10 L/min = 0.818667 m/s.
The table below is for DN15, ½ inch (16.1 mm bore).
Every unit
Your velocity in every unit
Tables
L/min to m/s conversion table
| L/min | m/s |
|---|---|
| 0.25 L/min | 0.0204667 m/s |
| 0.5 L/min | 0.0409333 m/s |
| 0.75 L/min | 0.0614 m/s |
| 1 L/min | 0.0818667 m/s |
| 1.5 L/min | 0.1228 m/s |
| 2 L/min | 0.163733 m/s |
| 2.5 L/min | 0.204667 m/s |
| 3 L/min | 0.2456 m/s |
| 4 L/min | 0.327467 m/s |
| 5 L/min | 0.409333 m/s |
| 8 L/min | 0.654933 m/s |
m/s to L/min conversion table
| m/s | L/min |
|---|---|
| 0.25 m/s | 3.05375 L/min |
| 0.5 m/s | 6.10749 L/min |
| 0.75 m/s | 9.16124 L/min |
| 1 m/s | 12.215 L/min |
| 1.5 m/s | 18.3225 L/min |
| 2 m/s | 24.43 L/min |
| 2.5 m/s | 30.5375 L/min |
| 3 m/s | 36.645 L/min |
| 4 m/s | 48.8599 L/min |
| 5 m/s | 61.0749 L/min |
| 8 m/s | 97.7199 L/min |
Quick answers
Quick answers
- How many m/s is 1 L/min?
- 1 L/min is 0.0818667 m/s.
- How many m/s is 10 L/min?
- 10 L/min is 0.818667 m/s.
The units
About these units
Liters per minute (L/min)
For taps, showers and small appliances.
Meters per second (m/s)
The design unit: most systems aim for 1 to 2.
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