MGD (imperial) to Cubic Metres per Day (MGD imp to m3/day)
1 million imperial gallons per day (MGD (imp)) = 4546.09 cubic metres per day (m³/day). 1 m³/day = 0.0002199692483 MGD (imp). Example: 15 MGD (imp) = 15 × 4546.09 = 68191.35 m³/day.
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1 MGD (imp) = 4546.09 m³/day
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk MGD (imp) to cubic metre per day converter to paste a column from Excel.
How to Convert MGD (imperial) to Cubic Metre per Day
- 1 MGD (imp) = 4546.09 m³/day
- 1 m³/day = 0.0002199692483 MGD (imp)
- Example: convert 15 MGD (imp) to m³/day: 15 MGD (imp) = 15 × 4546.09 m³/day = 68191.35 m³/day
Formula
m³/day = MGD (imp) × 4546.09
Derivation from SI units:
- 1 MGD (imp) = 10⁶ × 4.54609 L per day ≈ 0.0526 m³/s.
- 1 m³/day = 1/86,400 m³/s; one kilolitre per day (KLD).
- 1 MGD (imp) = 0.05261678240741 m³/s ÷ 0.00001157407407407 m³/s per m³/day = 4546.09 m³/day
Both units are defined exactly, so the factor is exact. MGD (imperial) definition: million imperial gallons per day; Cubic Metre per Day definition: cubic metre per day.
Worked examples
- A reading of 5 MGD (imp) converts to 22730.45 m³/day.
5 MGD (imp) × 4546.09 = 22730.45 m³/day - A value of 50 MGD (imp) is 227304.5 m³/day.
50 MGD (imp) × 4546.09 = 227304.5 m³/day
MGD (imperial) to Cubic Metre per Day conversion table
| MGD (imperial) (MGD (imp)) | Cubic Metres per Day (m³/day) |
|---|---|
| 0.5 MGD (imp) | 2273.045 m³/day |
| 1 MGD (imp) | 4546.09 m³/day |
| 2 MGD (imp) | 9092.18 m³/day |
| 5 MGD (imp) | 22730.45 m³/day |
| 10 MGD (imp) | 45460.9 m³/day |
| 20 MGD (imp) | 90921.8 m³/day |
| 50 MGD (imp) | 227304.5 m³/day |
| 100 MGD (imp) | 454609 m³/day |
| 200 MGD (imp) | 909218 m³/day |
| 500 MGD (imp) | 2273045 m³/day |
Where it's used
MGD (imperial) are used for older Indian municipal records, while cubic metres per day appear in STP and ETP capacity (KLD). 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 cubic metre per day | 4546.09 m³/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 MGD | 1.200949926 MGD |
| MGD (imp) to acre-foot per day | 3.685575143 acre-ft/day |
Frequently asked questions
How many cubic metres per day are in 1 million imperial gallons per day?
1 MGD (imp) = 4546.09 m³/day.
How do I convert million imperial gallons per day to cubic metres per day?
Multiply the value in MGD (imp) by 4546.09. For example, 15 MGD (imp) × 4546.09 = 68191.35 m³/day.
Is the MGD (imp) to m³/day conversion exact?
Yes. Both units are defined exactly, and 1 MGD (imp) is exactly 4546.09 m³/day.
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)]".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units) and Table 8 (non-SI units accepted for use with the SI).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
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APA
Scientific Converters. (2026, October 15). MGD (imperial) to Cubic Metres per Day (MGD imp to m3/day). Retrieved October 29, 2026, from https://scientificconverters.com/discharge/mgd-imperial-to-cubic-meters-per-day/
IEEE
Scientific Converters, "MGD (imperial) to Cubic Metres per Day (MGD imp to m3/day)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/discharge/mgd-imperial-to-cubic-meters-per-day/