Volumetric flow rate.
Gallon per Weeks to Cubic yard per Seconds Converter — gal/wk to yd3/s
Convert Gallon per Weeks (gal/wk) to Cubic yard per Seconds (yd3/s) using the exact conversion factor (1 gallon per weeks = 8.186395e-9 cubic yard per seconds). See the formula, worked examples, and conversion table.
Gallon per Weeks to Cubic yard 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 6.25894806e-9 / 0.764554858.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Weeks to Cubic yard per Seconds
Gallon per Weeks and Cubic yard 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
cubic yard per seconds = gallon per weeks × 8.186395e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per weeks equals 6.258948e-9 base units, and 1 cubic yard per seconds equals 0.764554857984 base units, so dividing one by the other gives the direct gallon per weeks-to-cubic yard per seconds factor of 8.186395e-9.
Simple example
1 gal/wk × 8.186395e-9 = 8.186395e-9 yd3/s
1 gallon per weeks = 8.186395e-9 cubic yard per seconds.
Real-world example
60 gal/wk × 8.186395e-9 = 4.911837e-7 yd3/s
60 gallon per weeks = 4.911837e-7 cubic yard per seconds.
Conversion table
| Gallon per Weeks (gal/wk) | Cubic yard per Seconds (yd3/s) |
|---|---|
| 0.1 gal/wk | 8.186395e-10 yd3/s |
| 1 gal/wk | 8.186395e-9 yd3/s |
| 10 gal/wk | 8.186395e-8 yd3/s |
| 60 gal/wk | 4.911837e-7 yd3/s |
| 100 gal/wk | 8.186395e-7 yd3/s |
| 1,000 gal/wk | 0.0000081864 yd3/s |
Reverse conversion: Cubic yard per Seconds to Gallon per Weeks
8.186395e-9 yd3/s × 122153890.9 = 1.000000002 gal/wk
8.186395e-9 cubic yard per seconds = 1.000000002 gallon per weeks.
gallon per weeks = cubic yard per seconds × 122153890.909
For a page dedicated to this direction, see Cubic yard per Seconds to Gallon per Weeks.
Understanding the Gallon per Weeks (gal/wk)
Volumetric flow rate.
Understanding the Cubic yard per Seconds (yd3/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic yard per seconds are in 1 gallon per weeks?
1 gallon per weeks equals 8.186395e-9 cubic yard per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per weeks to cubic yard per seconds?
Multiply the gallon per weeks value by 8.186395e-9. The converter above does this instantly to whatever precision you set.
How do I convert cubic yard per seconds back to gallon per weeks?
Use the reverse factor: 1 cubic yard per seconds equals 122,153,890.9 gallon per weeks. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per weeks?
Gallon per Weeks (gal/wk) is a unit of flow rate.
What is a cubic yard per seconds?
Cubic yard per Seconds (yd3/s) is a unit of flow rate.
Is the gallon per weeks to cubic yard per seconds conversion exact?
Yes. Both gallon per weeks and cubic yard per seconds are defined by fixed standards rather than physical artifacts, so the factor of 8.186395e-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.