Imperial Gallons per Second to US Gallons per Millisecond
Convert Imperial Gallons per Second to US Gallons per Millisecond instantly. Free online flow rate unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Imperial Gallons per Second to US Gallons per Millisecond conversions.
Reserved above the conversion cards and below the converter.
Formula
gal/ms = imp gal/s × 0.00120095
imp gal/s = gal/ms ÷ 0.00120095
Conversion table
| 1 imp gal/s | 0.00120095 gal/ms |
| 5 imp gal/s | 0.00600475 gal/ms |
| 10 imp gal/s | 0.0120095 gal/ms |
| 20 imp gal/s | 0.024019 gal/ms |
| 50 imp gal/s | 0.0600475 gal/ms |
| 100 imp gal/s | 0.120095 gal/ms |
| 500 imp gal/s | 0.600475 gal/ms |
| 1000 imp gal/s | 1.20095 gal/ms |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is imperial gallons per second (imp gal/s). The Imperial Gallon (imp gal) is a unit of volume. The Second (s) is a unit of time.
What is the destination unit in this conversion?
The destination unit is us gallons per millisecond (gal/ms). The US Gallon (gal) is a unit of volume. The Millisecond (ms) is a unit of time.
How do I convert imperial gallons per second to us gallons per millisecond?
Multiply the imperial gallons per second value by 0.00120095 to get us gallons per millisecond. For example, 10 imp gal/s × 0.00120095 = 0.0120095 gal/ms.
Is the imperial gallons per second to us gallons per millisecond conversion exact?
It's exact under the SI-based volume and time definitions used here, since both units convert to cubic meters per second through fixed, non-rounded factors.
Where is this conversion commonly used?
Flow rate conversions like this are used in plumbing, HVAC, irrigation, chemical processing, fuel and water metering, and engineering flow calculations.
Can I convert us gallons per millisecond back to imperial gallons per second?
Yes. Divide the us gallons per millisecond value by 0.00120095 (or multiply by 832.674) to get imperial gallons per second.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts imperial gallons per second (imp gal/s) into us gallons per millisecond (gal/ms), two units of volumetric flow rate.
The Imperial Gallon (imp gal) is a unit of volume. The Second (s) is a unit of time.
The US Gallon (gal) is a unit of volume. The Millisecond (ms) is a unit of time.
The formula is gal/ms = imp gal/s × 0.00120095, based on the fixed relationship between these two flow rate units.
Flow rate is calculated as a volume unit divided by a time unit, so every combination of a volume unit and a time unit forms a valid, exact flow rate unit.