Volumetric flow rate.
Hectoliter per Years to Milliliters per Millisecond Converter — hL/yr to mL/ms
Convert Hectoliter per Years (hL/yr) to Milliliter per Millisecond (mL/ms) using the exact conversion factor (1 hectoliter per years = 0.0000031689 milliliter per millisecond). See the formula, worked examples, and conversion table.
Hectoliter per Years to Milliliters per Millisecond 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 3.16887385e-9 / 0.001.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectoliter per Years to Milliliters per Millisecond
Hectoliter per Years and Milliliter per Millisecond 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
milliliters per millisecond = hectoliter per years × 0.00000316887385068
This factor comes from each unit's defined relationship to the category's base unit: 1 hectoliter per years equals 3.168874e-9 base units, and 1 milliliter per millisecond equals 0.001 base units, so dividing one by the other gives the direct hectoliter per years-to-milliliter per millisecond factor of 0.00000316887385068.
Simple example
1 hL/yr × 0.000003168873851 = 0.0000031689 mL/ms
1 hectoliter per years = 0.0000031689 milliliters per millisecond.
Real-world example
60 hL/yr × 0.000003168873851 = 0.0001901324 mL/ms
60 hectoliter per years = 0.0001901324 milliliters per millisecond.
Conversion table
| Hectoliter per Years (hL/yr) | Milliliter per Millisecond (mL/ms) |
|---|---|
| 0.1 hL/yr | 3.168874e-7 mL/ms |
| 1 hL/yr | 0.0000031689 mL/ms |
| 10 hL/yr | 0.0000316887 mL/ms |
| 60 hL/yr | 0.0001901324 mL/ms |
| 100 hL/yr | 0.0003168874 mL/ms |
| 1,000 hL/yr | 0.0031688739 mL/ms |
Reverse conversion: Milliliter per Millisecond to Hectoliter per Years
0.0000031689 mL/ms × 315569.52 = 1.000008252 hL/yr
0.0000031689 milliliters per millisecond = 1.000008252 hectoliter per years.
hectoliter per years = milliliters per millisecond × 315569.52
For a page dedicated to this direction, see Milliliter per Millisecond to Hectoliter per Years.
Understanding the Hectoliter per Years (hL/yr)
Volumetric flow rate.
Understanding the Milliliter per Millisecond (mL/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milliliters per millisecond are in 1 hectoliter per years?
1 hectoliter per years equals 0.0000031689 milliliters per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert hectoliter per years to milliliter per millisecond?
Multiply the hectoliter per years value by 0.000003168873851. The converter above does this instantly to whatever precision you set.
How do I convert milliliter per millisecond back to hectoliter per years?
Use the reverse factor: 1 milliliter per millisecond equals 315,569.52 hectoliter per years. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectoliter per years?
Hectoliter per Years (hL/yr) is a unit of flow rate.
What is a milliliter per millisecond?
Milliliter per Millisecond (mL/ms) is a unit of flow rate.
Is the hectoliter per years to milliliter per millisecond conversion exact?
Yes. Both hectoliter per years and milliliter per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.000003168873851 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.