Volumetric flow rate.
Cubic yard per Seconds to Gallon per Seconds Converter — yd3/s to gal/s
Convert Cubic yard per Seconds (yd3/s) to Gallon per Seconds (gal/s) using the exact conversion factor (1 cubic yard per seconds = 201.974026 gallon per seconds). See the formula, worked examples, and conversion table.
Cubic yard per Seconds to Gallon per Seconds 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 / 0.003785411784.
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 Gallon per Seconds
Cubic yard per Seconds and Gallon per Seconds 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
gallon per seconds = cubic yard per seconds × 201.974025974
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 gallon per seconds equals 0.003785411784 base units, so dividing one by the other gives the direct cubic yard per seconds-to-gallon per seconds factor of 201.974025974.
Simple example
1 yd3/s × 201.974026 = 201.974026 gal/s
1 cubic yard per seconds = 201.974026 gallon per seconds.
Real-world example
60 yd3/s × 201.974026 = 12,118.44156 gal/s
60 cubic yard per seconds = 12,118.44156 gallon per seconds.
Conversion table
| Cubic yard per Seconds (yd3/s) | Gallon per Seconds (gal/s) |
|---|---|
| 0.1 yd3/s | 20.1974026 gal/s |
| 1 yd3/s | 201.974026 gal/s |
| 10 yd3/s | 2,019.74026 gal/s |
| 60 yd3/s | 12,118.44156 gal/s |
| 100 yd3/s | 20,197.4026 gal/s |
| 1,000 yd3/s | 201,974.026 gal/s |
Reverse conversion: Gallon per Seconds to Cubic yard per Seconds
201.974026 gal/s × 0.004951131687 = 1 yd3/s
201.974026 gallon per seconds = 1 cubic yard per seconds.
cubic yard per seconds = gallon per seconds × 0.00495113168724
For a page dedicated to this direction, see Gallon per Seconds to Cubic yard per Seconds.
Understanding the Cubic yard per Seconds (yd3/s)
Volumetric flow rate.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per seconds are in 1 cubic yard per seconds?
1 cubic yard per seconds equals 201.974026 gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic yard per seconds to gallon per seconds?
Multiply the cubic yard per seconds value by 201.974026. The converter above does this instantly to whatever precision you set.
How do I convert gallon per seconds back to cubic yard per seconds?
Use the reverse factor: 1 gallon per seconds equals 0.0049511317 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 gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
Is the cubic yard per seconds to gallon per seconds conversion exact?
Yes. Both cubic yard per seconds and gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 201.974026 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.