Volumetric flow rate.
Cubic Meter per Seconds to Gallon per Seconds Converter — m3/s to gal/s
Convert Cubic Meter per Seconds (m3/s) to Gallon per Seconds (gal/s) using the exact conversion factor (1 cubic meter per seconds = 264.1720524 gallon per seconds). See the formula, worked examples, conversion table, and common uses.
Cubic Meter 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 1 / 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 Meter per Seconds to Gallon per Seconds
Cubic Meter 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. Cubic Meter per Seconds is most often used for used by hydrologists and water-resource engineers internationally to report river and reservoir discharge at large scales.
Formula
gallon per seconds = cubic meter per seconds × 264.172052358
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic meter per seconds equals 1 base unit, and 1 gallon per seconds equals 0.003785411784 base units, so dividing one by the other gives the direct cubic meter per seconds-to-gallon per seconds factor of 264.172052358.
Simple example
1 m3/s × 264.1720524 = 264.1720524 gal/s
1 cubic meter per seconds = 264.1720524 gallon per seconds.
Real-world example
60 m3/s × 264.1720524 = 15,850.32314 gal/s
60 cubic meter per seconds = 15,850.32314 gallon per seconds.
Conversion table
| Cubic Meter per Seconds (m3/s) | Gallon per Seconds (gal/s) |
|---|---|
| 0.1 m3/s | 26.41720524 gal/s |
| 1 m3/s | 264.1720524 gal/s |
| 10 m3/s | 2,641.720524 gal/s |
| 60 m3/s | 15,850.32314 gal/s |
| 100 m3/s | 26,417.20524 gal/s |
| 1,000 m3/s | 264,172.0524 gal/s |
Reverse conversion: Gallon per Seconds to Cubic Meter per Seconds
264.1720524 gal/s × 0.003785411784 = 1 m3/s
264.1720524 gallon per seconds = 1 cubic meter per seconds.
cubic meter per seconds = gallon per seconds × 0.003785411784
For a page dedicated to this direction, see Gallon per Seconds to Cubic Meter per Seconds.
Understanding the Cubic Meter per Seconds
Cubic Meter per Seconds (m3/s) measures volumetric flow rate. The SI coherent unit for volumetric flow rate — one cubic meter of volume passing a point every second. It is classified as a SI coherent derived unit.
Where it's used: Used internationally in hydrology and large-scale water-resource engineering
Uses of the Cubic Meter per Seconds today
- Used by hydrologists and water-resource engineers internationally to report river and reservoir discharge at large scales
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Cubic Meter per Seconds — sources
- BIPM SI Brochure — Cubic meter per second as the SI coherent derived unit for 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 meter per seconds?
1 cubic meter per seconds equals 264.1720524 gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic meter per seconds to gallon per seconds?
Multiply the cubic meter per seconds value by 264.1720524. The converter above does this instantly to whatever precision you set.
How do I convert gallon per seconds back to cubic meter per seconds?
Use the reverse factor: 1 gallon per seconds equals 0.0037854118 cubic meter per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic meter per seconds?
Cubic Meter per Seconds (m3/s) measures volumetric flow rate. The SI coherent unit for volumetric flow rate — one cubic meter of volume passing a point every second. It is classified as a SI coherent derived unit.
What is a gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
Is the cubic meter per seconds to gallon per seconds conversion exact?
Yes. Both cubic meter per seconds and gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 264.1720524 used above is exact to as many digits as you choose to display.
Where is the cubic meter per seconds still used today?
Used internationally in hydrology and large-scale water-resource engineering
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.