Convert Milliliter to Imperial Gallon
Convert milliliters to imperial gallons instantly. 1 milliliter = 0.0002199692 imperial gallon — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Imperial Gallon to Milliliter converter for the reverse conversion.
Units explained
Milliliter
A milliliter is one thousandth of a liter, exactly equal to one cubic centimeter.
Formed with the SI prefix milli- applied to the liter.
The standard small-volume unit in cooking, medicine and the laboratory.
Metric prefix system.
Imperial Gallon
The imperial gallon is defined as exactly 4.54609 liters.
Set by the British Weights and Measures Act of 1824 as the volume of 10 lb of water.
Used for fuel and beverages in the UK and Commonwealth.
UK, 1824.
Milliliter to Imperial Gallon conversion formula
The relationship between milliliters and imperial gallons:
To convert milliliters to imperial gallons, multiply the value in milliliters by 0.0002199692. To reverse, multiply imperial gallons by 4546.09.
How to use this converter
Type a value into the calculator. The result in imperial gallons updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Imperial Gallon to Milliliter converter for the reverse direction.
Step-by-step: convert milliliters to imperial gallons
- Write down the value in milliliters (mL).
- Multiply that value by the factor 0.0002199692.
- The product is the equivalent value in imperial gallons (gal).
- To reverse, multiply the imperial gallon value by 4546.09.
Worked examples
Example 1 — Convert 1 mL to gal:
1 × 0.0002199692 = 0.0002199692 gal
Example 2 — Convert 100 mL to gal:
100 × 0.0002199692 = 0.0219969248 gal
Real-world example — Plastic film and laminate thickness
A 500-milliliter sheet is a typical spec for ID-card laminates and film overlays. Converting to imperial gallons aligns the value with the unit most CAD systems and material datasheets prefer.
500 mL × 0.0002199692 = 0.1099846241 gal
Real-world example — Packaging gauge
A 4-milliliter plastic bag thickness is a common spec for grocery and freezer bags. Converting from milliliters to imperial gallons is what packaging buyers do whenever they bridge US and metric supplier quotes.
4 mL × 0.0002199692 = 0.000879877 gal
Milliliter to Imperial Gallon conversion table
Standard reference values for converting milliliters to imperial gallons:
| Milliliter [mL] | Imperial Gallon [gal] |
|---|---|
| 0.01 | 2.199692e-6 |
| 0.1 | 2.199692e-5 |
| 1 | 0.0002199692 |
| 2 | 0.0004399385 |
| 3 | 0.0006599077 |
| 4 | 0.000879877 |
| 5 | 0.0010998462 |
| 10 | 0.0021996925 |
| 20 | 0.004399385 |
| 30 | 0.0065990774 |
| 40 | 0.0087987699 |
| 50 | 0.0109984624 |
| 100 | 0.0219969248 |
| 500 | 0.1099846241 |
| 1000 | 0.2199692483 |
Frequently asked questions
How many imperial gallons is 1 milliliter?
How do I convert milliliters to imperial gallons?
How do I convert imperial gallons back to milliliters?
How many imperial gallons is 100 milliliters?
Popular volume unit conversions
Convert Milliliter to other volume units
Show all Milliliter conversions
Metric / SI (13 units)
US Customary (Liquid) (15 units)
US Customary (Dry) (5 units)
Imperial (UK) (14 units)
Cubic (length-derived) (4 units)
Cooking / Culinary (5 units)
Sources & references
Conversion factor (1 mL = 0.0002199692 gal) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.