Convert Cusecs to MGD (ft3/s to MGD)
1 cusec (ft³/s) = 0.6463168831 million US gallons per day (MGD). 1 MGD = 1.547228652 ft³/s. Example: 15 ft³/s = 15 × 0.6463168831 = 9.694753247 MGD.
Also searched as cusecs to MGD, cusecs in MGD, cusecs into million US gallons per day, ft3/s to MGD, ft3/s in million US gallons per day, ft3/s into million US gallons per day, cusec to million US gallons per day, ft3/s to million US gallons per day converter and how many million US gallons per day in a cusec.
1 ft³/s = 0.6463168831 MGD
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk cusec to MGD converter to paste a column from Excel.
How to Convert Cusec to MGD
- 1 ft³/s = 0.6463168831 MGD
- 1 MGD = 1.547228652 ft³/s
- Example: convert 15 ft³/s to MGD: 15 ft³/s = 15 × 0.6463168831 MGD = 9.694753247 MGD
Formula
MGD = ft³/s × 0.6463168831169
or MGD = ft³/s ÷ 1.547228652263
Derivation from SI units:
- 1 cusec = 1 ft³/s = 0.028316846592 m³/s.
- 1 MGD = 10⁶ × 3.785411784 L per day ≈ 0.0438 m³/s.
- 1 ft³/s = 0.028316846592 m³/s ÷ 0.04381263638889 m³/s per MGD = 0.6463168831169 MGD
Both units are defined exactly, so the factor is exact. Cusec definition: cusec; MGD definition: million US gallons per day.
Worked examples
- A reading of 100 ft³/s converts to 64.63168831 MGD.
100 ft³/s × 0.6463168831 = 64.63168831 MGD - A value of 5000 ft³/s is 3231.584416 MGD.
5000 ft³/s × 0.6463168831 = 3231.584416 MGD
Cusec to MGD conversion table
| Cusecs (ft³/s) | MGD |
|---|---|
| 1 ft³/s | 0.6463168831 MGD |
| 10 ft³/s | 6.463168831 MGD |
| 35.3 ft³/s | 22.81498597 MGD |
| 100 ft³/s | 64.63168831 MGD |
| 500 ft³/s | 323.1584416 MGD |
| 1000 ft³/s | 646.3168831 MGD |
| 5000 ft³/s | 3231.584416 MGD |
| 10000 ft³/s | 6463.168831 MGD |
| 50000 ft³/s | 32315.84416 MGD |
| 100000 ft³/s | 64631.68831 MGD |
Where it's used
Cusecs are used for canal and dam releases in India (e.g. Cauvery releases), while million US gallons per day appear in US treatment-plant capacity. Both measure volumetric discharge of rivers, canals and water supply, so the conversion is a fixed factor.
Cusec to other water discharge units
| Conversion | 1 ft³/s equals |
|---|---|
| cusec to MGD | 0.6463168831 MGD |
| cusec to cumec | 0.02831684659 m³/s |
| cusec to MLD | 2.446575546 MLD |
| cusec to litre per second | 28.31684659 L/s |
| cusec to cubic metre per day | 2446.575546 m³/day |
| cusec to MGD (imp) | 0.5381713837 MGD (imp) |
| cusec to acre-foot per day | 1.983471074 acre-ft/day |
Frequently asked questions
How many million US gallons per day are in 1 cusec?
1 ft³/s = 0.6463168831 MGD.
How do I convert cusecs to million US gallons per day?
Multiply the value in ft³/s by 0.6463168831, or divide it by 1.547228652. For example, 15 ft³/s × 0.6463168831 = 9.694753247 MGD.
Is the ft³/s to MGD conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "cubic foot per second".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "gallon (U.S.)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Cusecs to MGD (ft3/s to MGD). Retrieved October 29, 2026, from https://scientificconverters.com/discharge/cusecs-to-mgd/
IEEE
Scientific Converters, "Convert Cusecs to MGD (ft3/s to MGD)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/discharge/cusecs-to-mgd/