MGD (imperial) to Acre-feet per Day (MGD imp to acre-ft/day)
1 million imperial gallons per day (MGD (imp)) = 3.685575143 acre-feet per day (acre-ft/day). 1 acre-ft/day = 0.2713280726 MGD (imp). Example: 15 MGD (imp) = 15 × 3.685575143 = 55.28362715 acre-ft/day.
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1 MGD (imp) = 3.685575143 acre-ft/day
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk MGD (imp) to acre-foot per day converter to paste a column from Excel.
How to Convert MGD (imperial) to Acre-foot per Day
- 1 MGD (imp) = 3.685575143 acre-ft/day
- 1 acre-ft/day = 0.2713280726 MGD (imp)
- Example: convert 15 MGD (imp) to acre-ft/day: 15 MGD (imp) = 15 × 3.685575143 acre-ft/day = 55.28362715 acre-ft/day
Formula
acre-ft/day = MGD (imp) × 3.685575143156
Derivation from SI units:
- 1 MGD (imp) = 10⁶ × 4.54609 L per day ≈ 0.0526 m³/s.
- 1 acre-ft/day = 1233.48 m³ ÷ 86,400 s; 1 cusec for one day ≈ 1.98 acre-feet.
- 1 MGD (imp) = 0.05261678240741 m³/s ÷ 0.0142764101568 m³/s per acre-ft/day = 3.685575143156 acre-ft/day
Both units are defined exactly, so the factor is exact. MGD (imperial) definition: million imperial gallons per day; Acre-foot per Day definition: acre-foot per day.
Worked examples
- A reading of 5 MGD (imp) converts to 18.42787572 acre-ft/day.
5 MGD (imp) × 3.685575143 = 18.42787572 acre-ft/day - A value of 50 MGD (imp) is 184.2787572 acre-ft/day.
50 MGD (imp) × 3.685575143 = 184.2787572 acre-ft/day
MGD (imperial) to Acre-foot per Day conversion table
| MGD (imperial) (MGD (imp)) | Acre-feet per Day (acre-ft/day) |
|---|---|
| 0.5 MGD (imp) | 1.842787572 acre-ft/day |
| 1 MGD (imp) | 3.685575143 acre-ft/day |
| 2 MGD (imp) | 7.371150286 acre-ft/day |
| 5 MGD (imp) | 18.42787572 acre-ft/day |
| 10 MGD (imp) | 36.85575143 acre-ft/day |
| 20 MGD (imp) | 73.71150286 acre-ft/day |
| 50 MGD (imp) | 184.2787572 acre-ft/day |
| 100 MGD (imp) | 368.5575143 acre-ft/day |
| 200 MGD (imp) | 737.1150286 acre-ft/day |
| 500 MGD (imp) | 1842.787572 acre-ft/day |
Where it's used
MGD (imperial) are used for older Indian municipal records, while acre-feet per day appear in US irrigation district deliveries. Both measure volumetric discharge of rivers, canals and water supply, so the conversion is a fixed factor.
MGD (imperial) to other water discharge units
| Conversion | 1 MGD (imp) equals |
|---|---|
| MGD (imp) to acre-foot per day | 3.685575143 acre-ft/day |
| MGD (imp) to cumec | 0.05261678241 m³/s |
| MGD (imp) to cusec | 1.858144135 ft³/s |
| MGD (imp) to MLD | 4.54609 MLD |
| MGD (imp) to litre per second | 52.61678241 L/s |
| MGD (imp) to cubic metre per day | 4546.09 m³/day |
| MGD (imp) to MGD | 1.200949926 MGD |
Frequently asked questions
How many acre-feet per day are in 1 million imperial gallons per day?
1 MGD (imp) = 3.685575143 acre-ft/day.
How do I convert million imperial gallons per day to acre-feet per day?
Multiply the value in MGD (imp) by 3.685575143. For example, 15 MGD (imp) × 3.685575143 = 55.28362715 acre-ft/day.
Is the MGD (imp) to acre-ft/day 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, "gallon [Canadian and U.K. (Imperial)]".
- 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, "acre-foot".
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). MGD (imperial) to Acre-feet per Day (MGD imp to acre-ft/day). Retrieved October 29, 2026, from https://scientificconverters.com/discharge/mgd-imperial-to-acre-feet-per-day/
IEEE
Scientific Converters, "MGD (imperial) to Acre-feet per Day (MGD imp to acre-ft/day)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/discharge/mgd-imperial-to-acre-feet-per-day/