Gallon (UK) to Milliliter Converter
Convert Gallon (UK) (gal (UK)) to Milliliter (mL) instantly. 1 gal (UK) = 4,546.09 mL.
Volume Converter
40 units available
1 gal (UK) = 4,546.09 mL
Formula:
mL = gal (UK) × 4,546.09With your value: 1 gal (UK) = 4,546.09 mL
How big is that?
Everyday references on a logarithmic scale, all expressed in gallon (uk) so you can sanity-check the result.
Other Gallon (UK) to Milliliter conversions
Gallon (UK) to Milliliter Conversion Table
| Gallon (UK) (gal (UK)) | Milliliter (mL) |
|---|---|
| 0.5 | 2,273.045 |
| 1 | 4,546.09 |
| 2 | 9,092.18 |
| 5 | 22,730.45 |
| 10 | 45,460.9 |
| 15 | 68,191.35 |
| 20 | 90,921.8 |
| 25 | 113,652.25 |
| 50 | 227,304.5 |
| 100 | 454,609 |
| 250 | 1,136,522.5 |
| 500 | 2,273,045 |
| 1000 | 4,546,090 |
Milliliter to Gallon (UK) Conversion Table
| Milliliter (mL) | Gallon (UK) (gal (UK)) |
|---|---|
| 0.5 | 0.00011 |
| 1 | 0.00022 |
| 2 | 0.00044 |
| 5 | 0.0011 |
| 10 | 0.0022 |
| 15 | 0.0033 |
| 20 | 0.004399 |
| 25 | 0.005499 |
| 50 | 0.010998 |
| 100 | 0.021997 |
| 250 | 0.054992 |
| 500 | 0.109985 |
| 1000 | 0.219969 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Gallon (UK) (gal (UK))
Volume
The imperial gallon is exactly 4.546 09 L (Weights and Measures Act 1985).
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Milliliter (mL)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Gallon (UK) to Milliliter
To convert from Gallon (UK) (gal (UK)) to Milliliter (mL), multiply the value by 4,546.09.
Formula: mL = gal (UK) × 4,546.09
Reverse: gal (UK) = mL × 0.0002199692
Step-by-Step Example
- Start with your value in Gallon (UK). For example: 5 gal (UK)
- Multiply by the conversion factor: 5 x 4,546.09
- The result is: 22,730.45 mL
About Gallon (UK)
The imperial gallon equals exactly 4.54609 litres, about 20% larger than the US gallon — a frequent source of fuel-economy confusion.
Common uses: UK fuel figures, brewing, older recipes.
About Milliliter
The milliliter equals one thousandth of a liter and is used for small liquid measurements.
Common uses: medicine dosage, cooking, chemistry.
Frequently Asked Questions
How many Milliliter are in 1 Gallon (UK)?
There are exactly 4,546.09 Milliliter in 1 Gallon (UK). This means the conversion factor from Gallon (UK) to Milliliter is 4,546.09.
What is the formula to convert Gallon (UK) to Milliliter?
The formula to convert Gallon (UK) to Milliliter is: mL = gal (UK) × 4,546.09. For example, to convert 10 Gallon (UK) to Milliliter, you would multiply 10 by 4,546.09.
What is a Gallon (UK)?
The imperial gallon equals exactly 4.54609 litres, about 20% larger than the US gallon — a frequent source of fuel-economy confusion.
What is a Milliliter?
The milliliter equals one thousandth of a liter and is used for small liquid measurements.
What are the common uses of Gallon (UK)?
The Gallon (UK) is commonly used in UK fuel figures, brewing, older recipes.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). Gallon (UK) to Milliliter converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gallon_uk-to-milliliter