Convert Milliliters to Imperial Gallons
1 milliliter (mL) equals 0.0002199692483 imperial gallons (gal (imp)).
1 mL = 0.0002199692483 gal (imp)
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk milliliter to imperial gallon converter to paste a column from Excel.
How to Convert Milliliter to Imperial Gallon
- 1 mL = 0.0002199692483 gal (imp)
- 1 gal (imp) = 4546.09 mL
- Example: convert 15 mL to gal (imp): 15 mL = 15 × 0.0002199692483 gal (imp) = 0.003299538724 gal (imp)
Formula
gal (imp) = mL × 0.0002199692482991
or gal (imp) = mL ÷ 4546.09
Derivation from SI units:
- 1 mL = 10⁻³ L = 1 cm³ = 10⁻⁶ m³
- 1 imp gal = 4.54609 L = 0.00454609 m³ (exact, by definition)
- 1 mL = 0.000001 m³ ÷ 0.00454609 m³ per gal (imp) = 0.0002199692482991 gal (imp)
Both units are defined exactly, so the factor is exact. Milliliter definition: milliliter; Imperial Gallon definition: imperial gallon.
Worked examples
- A reading of 15 mL converts to 0.003299538724 gal (imp).
15 mL × 0.0002199692483 = 0.003299538724 gal (imp) - A value of 250 mL is 0.05499231207 gal (imp).
250 mL × 0.0002199692483 = 0.05499231207 gal (imp)
Milliliter to Imperial Gallon conversion table
| Milliliters (mL) | Imperial Gallons (gal (imp)) |
|---|---|
| 0.1 mL | 0.00002199692483 gal (imp) |
| 0.5 mL | 0.0001099846241 gal (imp) |
| 1 mL | 0.0002199692483 gal (imp) |
| 2 mL | 0.0004399384966 gal (imp) |
| 5 mL | 0.001099846241 gal (imp) |
| 10 mL | 0.002199692483 gal (imp) |
| 15 mL | 0.003299538724 gal (imp) |
| 20 mL | 0.004399384966 gal (imp) |
| 30 mL | 0.006599077449 gal (imp) |
| 50 mL | 0.01099846241 gal (imp) |
| 100 mL | 0.02199692483 gal (imp) |
| 150 mL | 0.03299538724 gal (imp) |
| 200 mL | 0.04399384966 gal (imp) |
| 250 mL | 0.05499231207 gal (imp) |
| 330 mL | 0.07258985194 gal (imp) |
| 355 mL | 0.07808908315 gal (imp) |
| 500 mL | 0.1099846241 gal (imp) |
| 750 mL | 0.1649769362 gal (imp) |
| 1000 mL | 0.2199692483 gal (imp) |
| 2000 mL | 0.4399384966 gal (imp) |
Where it's used
Milliliters are used for medicine doses and syringes, while imperial gallons appear in fuel economy in the UK (miles per gallon). Both measure volume (capacity), so the conversion is a fixed factor.
Milliliter to other volume units
| Conversion | 1 mL equals |
|---|---|
| milliliter to cubic meter | 0.000001 m³ |
| milliliter to liter | 0.001 L |
| milliliter to cubic centimeter | 1 cm³ |
| milliliter to cubic foot | 0.00003531466672 ft³ |
| milliliter to cubic inch | 0.06102374409 in³ |
| milliliter to US gallon | 0.0002641720524 gal (US) |
| milliliter to imperial gallon | 0.0002199692483 gal (imp) |
Frequently asked questions
How many imperial gallons are in 1 milliliter?
1 mL = 0.0002199692483 gal (imp).
How do I convert milliliters to imperial gallons?
Multiply the value in mL by 0.0002199692483, or divide it by 4546.09. For example, 15 mL × 0.0002199692483 = 0.003299538724 gal (imp).
Is the mL to gal (imp) 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
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8, litre with SI prefix milli.
- 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)]".
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 Milliliters to Imperial Gallons. Retrieved October 17, 2026, from https://scientificconverters.com/volume/milliliters-to-imperial-gallons/
IEEE
Scientific Converters, "Convert Milliliters to Imperial Gallons," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/volume/milliliters-to-imperial-gallons/