Convert volume units — liters, gallons, cups, milliliters, cubic meters, pints, quarts.
| Unit | Name | Value |
|---|---|---|
| L | Liter | 4.54609 |
| mL | Milliliter | 4546.09 |
| m³ | Cubic Meter | 0.00454609 |
| gal(US) | US Gallon | 1.2009505 |
| qt | US Quart | 4.8037994 |
| pt | US Pint | 9.607609 |
| cup | US Cup | 19.215218 |
| fl oz | Fluid Ounce | 153.72174 |
Common uk gallon values converted to milliliter — factor: 1 gal(UK) = 4546 mL
| UK Gallon (gal(UK)) | Milliliter (mL) | Context |
|---|---|---|
| 0.0065 gal(UK) | 29.55 mL | Tablespoon |
| 0.025 gal(UK) | 113.7 mL | Quarter cup |
| 0.05 gal(UK) | 227.3 mL | Cup |
| 0.125 gal(UK) | 568.3 mL | UK pint |
| 0.25 gal(UK) | 1,137 mL | UK quart |
| 0.5 gal(UK) | 2,273 mL | Half UK gallon |
| 1 gal(UK) | 4,546 mL | UK gallon |
| 2 gal(UK) | 9,092 mL | Two UK gallons |
| 5 gal(UK) | 2.273e+04 mL | Jerrycan |
| 10 gal(UK) | 4.546e+04 mL | 10-gallon drum |
| 20 gal(UK) | 9.092e+04 mL | 20-gallon tank |
| 35 gal(UK) | 1.591e+05 mL | UK oil barrel |
| 55 gal(UK) | 2.5e+05 mL | Drum barrel |
| 100 gal(UK) | 4.546e+05 mL | Large drum |
| 1,000 gal(UK) | 4,546,000 mL | Tank |
Converting uk gallon to milliliter comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using milliliter, or a laboratory protocol may specify volumes in uk gallon that need to be measured with equipment calibrated in milliliter.
In everyday use, knowing that 5 gal(UK) = 2.273e+04 mL and 10 gal(UK) = 4.546e+04 mL covers most common situations. For bulk calculations, 100 gal(UK) = 4.546e+05 mL is a useful anchor. The reverse conversion — milliliter back to uk gallon — uses the factor 0.00022, so 1 mL = 0.00022 gal(UK).
All conversions use the internationally recognized factor of exactly 1 gal(UK) = 4546 mL. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Milliliter = UK Gallon × 4546.09
Multiply any uk gallon value by 4546.09 to get milliliter. One uk gallon equals 4546.09 mL.
Reverse: UK Gallon = Milliliter × 0.00021996925
1 gal(UK) = 4546.09 mL. Memorize this for instant mental estimates.
Use 4546.09 as a quick mental factor. Multiply your UK gallons value by this to estimate milliliters.
To verify: multiply your result by 0.00021996925 to recover the original gal(UK) value.
Calculates fuel economy in miles per Imperial gallon, the standard UK efficiency metric.
Orders bulk beer kegs rated in Imperial gallons and reconciles against pint servings.
Applies pesticides at rates specified in Imperial gallons per acre in legacy manuals.
Calculates boat fuel range using Imperial gallons for UK coastal navigation.
Converts UK heating oil deliveries between Imperial gallons and liters for EU reports.
References older British Pharmacopoeia formulations using Imperial gallon quantities.
The Imperial gallon was defined by the British Weights and Measures Act of 1824 as the volume of ten pounds of water at 62°F, later fixed to exactly 4.54609 liters in 1985.
UK gallons are still used in Britain for fuel pricing. Road signs show consumption in miles per Imperial gallon, making UK cars appear more fuel-efficient than identical US models.
Interesting fact: 1 Imperial gallon = 1.20095 US gallons. Confusing the two has caused real-world errors in cross-border fuel cost calculations.
The milliliter is one-thousandth of a liter, in use since the metric system was codified in France in 1795. The milli- prefix (from Latin mille, thousand) was standardized as part of the original SI prefix system.
Milliliters are the workhorse of medicine and cooking: syringes, dropper bottles, and nutritional labels all rely on mL for precise small-volume measurement. A standard US teaspoon is approximately 4.929 mL.
Interesting fact: The milliliter is numerically identical to the cubic centimeter (cm³), so 1 mL = 1 cm³ exactly. This equivalence is widely used in medicine, where a 5 cc syringe holds exactly 5 mL.