Volumetric flow rate.
Imperial gallon per Seconds to Metric cups per Millisecond Converter — imp gal/s to metric cup/ms
Convert Imperial gallon per Seconds (imp gal/s) to Metric cup per Millisecond (metric cup/ms) using the exact conversion factor (1 imperial gallon per seconds = 0.01818436 metric cup per millisecond). See the formula, worked examples, and conversion table.
Imperial gallon per Seconds to Metric cups 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 0.00454609 / 0.25.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial gallon per Seconds to Metric cups per Millisecond
Imperial gallon per Seconds and Metric cup 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
metric cups per millisecond = imperial gallon per seconds × 0.01818436
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial gallon per seconds equals 0.00454609 base units, and 1 metric cup per millisecond equals 0.25 base units, so dividing one by the other gives the direct imperial gallon per seconds-to-metric cup per millisecond factor of 0.01818436.
Simple example
1 imp gal/s × 0.01818436 = 0.01818436 metric cup/ms
1 imperial gallon per seconds = 0.01818436 metric cups per millisecond.
Real-world example
60 imp gal/s × 0.01818436 = 1.0910616 metric cup/ms
60 imperial gallon per seconds = 1.0910616 metric cups per millisecond.
Conversion table
| Imperial gallon per Seconds (imp gal/s) | Metric cup per Millisecond (metric cup/ms) |
|---|---|
| 0.1 imp gal/s | 0.001818436 metric cup/ms |
| 1 imp gal/s | 0.01818436 metric cup/ms |
| 10 imp gal/s | 0.1818436 metric cup/ms |
| 60 imp gal/s | 1.0910616 metric cup/ms |
| 100 imp gal/s | 1.818436 metric cup/ms |
| 1,000 imp gal/s | 18.18436 metric cup/ms |
Reverse conversion: Metric cup per Millisecond to Imperial gallon per Seconds
0.01818436 metric cup/ms × 54.99231207 = 1 imp gal/s
0.01818436 metric cups per millisecond = 1 imperial gallon per seconds.
imperial gallon per seconds = metric cups per millisecond × 54.9923120748
For a page dedicated to this direction, see Metric cup per Millisecond to Imperial gallon per Seconds.
Understanding the Imperial gallon per Seconds (imp gal/s)
Volumetric flow rate.
Understanding the Metric cup per Millisecond (metric cup/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many metric cups per millisecond are in 1 imperial gallon per seconds?
1 imperial gallon per seconds equals 0.01818436 metric cups per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per seconds to metric cup per millisecond?
Multiply the imperial gallon per seconds value by 0.01818436. The converter above does this instantly to whatever precision you set.
How do I convert metric cup per millisecond back to imperial gallon per seconds?
Use the reverse factor: 1 metric cup per millisecond equals 54.99231207 imperial gallon per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial gallon per seconds?
Imperial gallon per Seconds (imp gal/s) is a unit of flow rate.
What is a metric cup per millisecond?
Metric cup per Millisecond (metric cup/ms) is a unit of flow rate.
Is the imperial gallon per seconds to metric cup per millisecond conversion exact?
Yes. Both imperial gallon per seconds and metric cup per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.01818436 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.