Volumetric flow rate.
Liter per Hours to Cubic Millimeter per Seconds Converter — L/h to mm3/s
Convert Liter per Hours (L/h) to Cubic Millimeter per Seconds (mm3/s) using the exact conversion factor (1 liter per hours = 277.7777778 cubic millimeter per seconds). See the formula, worked examples, and conversion table.
Liter per Hours to Cubic Millimeter per Seconds converter
Converter
Flow Rate Converter
Convert volumetric flow rates across metric, US, imperial, industrial, and scientific units.
Context values
Some unit families need one extra value for a physically accurate result.
Volumetric flow rate.
Result = input x 2.77777778e-7 / 1e-9.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Liter per Hours to Cubic Millimeter per Seconds
Liter per Hours and Cubic Millimeter per Seconds both measure volumetric flow rate — how much volume passes a point over time — used to size pipes and pumps, monitor river or stream discharge, control industrial processes, and set medical infusion rates. Both are volumetric flow rate units.
Formula
cubic millimeter per seconds = liter per hours × 277.777777778
This factor comes from each unit's defined relationship to the category's base unit: 1 liter per hours equals 2.777778e-7 base units, and 1 cubic millimeter per seconds equals 1e-9 base units, so dividing one by the other gives the direct liter per hours-to-cubic millimeter per seconds factor of 277.777777778.
Simple example
1 L/h × 277.7777778 = 277.7777778 mm3/s
1 liter per hours = 277.7777778 cubic millimeter per seconds.
Real-world example
60 L/h × 277.7777778 = 16,666.66667 mm3/s
60 liter per hours = 16,666.66667 cubic millimeter per seconds.
Conversion table
| Liter per Hours (L/h) | Cubic Millimeter per Seconds (mm3/s) |
|---|---|
| 0.1 L/h | 27.77777778 mm3/s |
| 1 L/h | 277.7777778 mm3/s |
| 10 L/h | 2,777.777778 mm3/s |
| 60 L/h | 16,666.66667 mm3/s |
| 100 L/h | 27,777.77778 mm3/s |
| 1,000 L/h | 277,777.7778 mm3/s |
Reverse conversion: Cubic Millimeter per Seconds to Liter per Hours
277.7777778 mm3/s × 0.0036 = 1 L/h
277.7777778 cubic millimeter per seconds = 1 liter per hours.
liter per hours = cubic millimeter per seconds × 0.0036
For a page dedicated to this direction, see Cubic Millimeter per Seconds to Liter per Hours.
Understanding the Liter per Hours (L/h)
Volumetric flow rate.
Understanding the Cubic Millimeter per Seconds (mm3/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic millimeter per seconds are in 1 liter per hours?
1 liter per hours equals 277.7777778 cubic millimeter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert liter per hours to cubic millimeter per seconds?
Multiply the liter per hours value by 277.7777778. The converter above does this instantly to whatever precision you set.
How do I convert cubic millimeter per seconds back to liter per hours?
Use the reverse factor: 1 cubic millimeter per seconds equals 0.0036 liter per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a liter per hours?
Liter per Hours (L/h) is a unit of flow rate.
What is a cubic millimeter per seconds?
Cubic Millimeter per Seconds (mm3/s) is a unit of flow rate.
Is the liter per hours to cubic millimeter per seconds conversion exact?
Yes. Both liter per hours and cubic millimeter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 277.7777778 used above is exact to as many digits as you choose to display.
What's the difference between volumetric and mass flow rate?
Volumetric flow rate measures the volume of fluid passing a point per unit time (for example, liters per second). Mass flow rate measures the mass instead. For a fluid of constant density the two are directly proportional, but for compressible fluids like gases, mass flow is often the more meaningful quantity.