Volumetric flow rate.
Hectoliter per Years to Liters per Millisecond Converter — hL/yr to L/ms
Convert Hectoliter per Years (hL/yr) to Liter per Millisecond (L/ms) using the exact conversion factor (1 hectoliter per years = 3.168874e-9 liter per millisecond). See the formula, worked examples, and conversion table.
Hectoliter per Years to Liters 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 / 1.
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 Liters per Millisecond
Hectoliter per Years and Liter 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
liters per millisecond = hectoliter per years × 3.168874e-9
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 liter per millisecond equals 1 base unit, so dividing one by the other gives the direct hectoliter per years-to-liter per millisecond factor of 3.168874e-9.
Simple example
1 hL/yr × 3.168874e-9 = 3.168874e-9 L/ms
1 hectoliter per years = 3.168874e-9 liters per millisecond.
Real-world example
60 hL/yr × 3.168874e-9 = 1.901324e-7 L/ms
60 hectoliter per years = 1.901324e-7 liters per millisecond.
Conversion table
| Hectoliter per Years (hL/yr) | Liter per Millisecond (L/ms) |
|---|---|
| 0.1 hL/yr | 3.168874e-10 L/ms |
| 1 hL/yr | 3.168874e-9 L/ms |
| 10 hL/yr | 3.168874e-8 L/ms |
| 60 hL/yr | 1.901324e-7 L/ms |
| 100 hL/yr | 3.168874e-7 L/ms |
| 1,000 hL/yr | 0.0000031689 L/ms |
Reverse conversion: Liter per Millisecond to Hectoliter per Years
3.168874e-9 L/ms × 315569520 = 1.000000047 hL/yr
3.168874e-9 liters per millisecond = 1.000000047 hectoliter per years.
hectoliter per years = liters per millisecond × 315569520
For a page dedicated to this direction, see Liter per Millisecond to Hectoliter per Years.
Understanding the Hectoliter per Years (hL/yr)
Volumetric flow rate.
Understanding the Liter per Millisecond (L/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many liters per millisecond are in 1 hectoliter per years?
1 hectoliter per years equals 3.168874e-9 liters per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert hectoliter per years to liter per millisecond?
Multiply the hectoliter per years value by 3.168874e-9. The converter above does this instantly to whatever precision you set.
How do I convert liter per millisecond back to hectoliter per years?
Use the reverse factor: 1 liter per millisecond equals 315,569,520 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 liter per millisecond?
Liter per Millisecond (L/ms) is a unit of flow rate.
Is the hectoliter per years to liter per millisecond conversion exact?
Yes. Both hectoliter per years and liter per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 3.168874e-9 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.