Volumetric flow rate.
Cubic yard per Seconds to Imperial gallons per Millisecond Converter — yd3/s to imp gal/ms
Convert Cubic yard per Seconds (yd3/s) to Imperial gallon per Millisecond (imp gal/ms) using the exact conversion factor (1 cubic yard per seconds = 0.1681785574 imperial gallon per millisecond). See the formula, worked examples, and conversion table.
Cubic yard per Seconds to Imperial gallons 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 0.764554858 / 4.54609.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic yard per Seconds to Imperial gallons per Millisecond
Cubic yard per Seconds and Imperial gallon 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
imperial gallons per millisecond = cubic yard per seconds × 0.168178557394
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic yard per seconds equals 0.764554857984 base units, and 1 imperial gallon per millisecond equals 4.54609 base units, so dividing one by the other gives the direct cubic yard per seconds-to-imperial gallon per millisecond factor of 0.168178557394.
Simple example
1 yd3/s × 0.1681785574 = 0.1681785574 imp gal/ms
1 cubic yard per seconds = 0.1681785574 imperial gallons per millisecond.
Real-world example
60 yd3/s × 0.1681785574 = 10.09071344 imp gal/ms
60 cubic yard per seconds = 10.09071344 imperial gallons per millisecond.
Conversion table
| Cubic yard per Seconds (yd3/s) | Imperial gallon per Millisecond (imp gal/ms) |
|---|---|
| 0.1 yd3/s | 0.0168178557 imp gal/ms |
| 1 yd3/s | 0.1681785574 imp gal/ms |
| 10 yd3/s | 1.681785574 imp gal/ms |
| 60 yd3/s | 10.09071344 imp gal/ms |
| 100 yd3/s | 16.81785574 imp gal/ms |
| 1,000 yd3/s | 168.1785574 imp gal/ms |
Reverse conversion: Imperial gallon per Millisecond to Cubic yard per Seconds
0.1681785574 imp gal/ms × 5.946061231 = 1 yd3/s
0.1681785574 imperial gallons per millisecond = 1 cubic yard per seconds.
cubic yard per seconds = imperial gallons per millisecond × 5.94606123096
For a page dedicated to this direction, see Imperial gallon per Millisecond to Cubic yard per Seconds.
Understanding the Cubic yard per Seconds (yd3/s)
Volumetric flow rate.
Understanding the Imperial gallon per Millisecond (imp gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallons per millisecond are in 1 cubic yard per seconds?
1 cubic yard per seconds equals 0.1681785574 imperial gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert cubic yard per seconds to imperial gallon per millisecond?
Multiply the cubic yard per seconds value by 0.1681785574. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per millisecond back to cubic yard per seconds?
Use the reverse factor: 1 imperial gallon per millisecond equals 5.946061231 cubic yard per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic yard per seconds?
Cubic yard per Seconds (yd3/s) is a unit of flow rate.
What is a imperial gallon per millisecond?
Imperial gallon per Millisecond (imp gal/ms) is a unit of flow rate.
Is the cubic yard per seconds to imperial gallon per millisecond conversion exact?
Yes. Both cubic yard per seconds and imperial gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.1681785574 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.