Convert MGD (imperial) to MGD (MGD imp to MGD)
1 million imperial gallons per day (MGD (imp)) = 1.200949926 million US gallons per day (MGD). 1 MGD = 0.8326741846 MGD (imp). Example: 15 MGD (imp) = 15 × 1.200949926 = 18.01424888 MGD.
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1 MGD (imp) = 1.200949926 MGD
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk MGD (imp) to MGD converter to paste a column from Excel.
How to Convert MGD (imperial) to MGD
- 1 MGD (imp) = 1.200949926 MGD
- 1 MGD = 0.8326741846 MGD (imp)
- Example: convert 15 MGD (imp) to MGD: 15 MGD (imp) = 15 × 1.200949926 MGD = 18.01424888 MGD
Formula
MGD = MGD (imp) × 1.200949925505
Derivation from SI units:
- 1 MGD (imp) = 10⁶ × 4.54609 L per day ≈ 0.0526 m³/s.
- 1 MGD = 10⁶ × 3.785411784 L per day ≈ 0.0438 m³/s.
- 1 MGD (imp) = 0.05261678240741 m³/s ÷ 0.04381263638889 m³/s per MGD = 1.200949925505 MGD
Both units are defined exactly, so the factor is exact. MGD (imperial) definition: million imperial gallons per day; MGD definition: million US gallons per day.
Worked examples
- A reading of 5 MGD (imp) converts to 6.004749628 MGD.
5 MGD (imp) × 1.200949926 = 6.004749628 MGD - A value of 50 MGD (imp) is 60.04749628 MGD.
50 MGD (imp) × 1.200949926 = 60.04749628 MGD
MGD (imperial) to MGD conversion table
| MGD (imperial) (MGD (imp)) | MGD |
|---|---|
| 0.5 MGD (imp) | 0.6004749628 MGD |
| 1 MGD (imp) | 1.200949926 MGD |
| 2 MGD (imp) | 2.401899851 MGD |
| 5 MGD (imp) | 6.004749628 MGD |
| 10 MGD (imp) | 12.00949926 MGD |
| 20 MGD (imp) | 24.01899851 MGD |
| 50 MGD (imp) | 60.04749628 MGD |
| 100 MGD (imp) | 120.0949926 MGD |
| 200 MGD (imp) | 240.1899851 MGD |
| 500 MGD (imp) | 600.4749628 MGD |
Where it's used
MGD (imperial) are used for older Indian municipal records, 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.
MGD (imperial) to other water discharge units
| Conversion | 1 MGD (imp) equals |
|---|---|
| MGD (imp) to MGD | 1.200949926 MGD |
| 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 acre-foot per day | 3.685575143 acre-ft/day |
Frequently asked questions
How many million US gallons per day are in 1 million imperial gallons per day?
1 MGD (imp) = 1.200949926 MGD.
How do I convert million imperial gallons per day to million US gallons per day?
Multiply the value in MGD (imp) by 1.200949926. For example, 15 MGD (imp) × 1.200949926 = 18.01424888 MGD.
Is the MGD (imp) 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, "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, "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 MGD (imperial) to MGD (MGD imp to MGD). Retrieved October 29, 2026, from https://scientificconverters.com/discharge/mgd-imperial-to-mgd/
IEEE
Scientific Converters, "Convert MGD (imperial) to MGD (MGD imp to MGD)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/discharge/mgd-imperial-to-mgd/