Convert Imperial Cup to Imperial Gallon
Convert imperial cups to imperial gallons instantly. 1 imperial cup = 0.0625 imperial gallon — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Imperial Gallon to Imperial Cup converter for the reverse conversion.
Units explained
Imperial Cup
An imperial cup is half an imperial pint (284.131 mL).
A British cooking measure.
Used in older British and Commonwealth recipes.
UK cooking measure.
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.
Imperial Cup to Imperial Gallon conversion formula
The relationship between imperial cups and imperial gallons:
To convert imperial cups to imperial gallons, multiply the value in imperial cups by 0.0625. To reverse, multiply imperial gallons by 16.
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 Imperial Cup converter for the reverse direction.
Step-by-step: convert imperial cups to imperial gallons
- Write down the value in imperial cups (cup).
- Multiply that value by the factor 0.0625.
- The product is the equivalent value in imperial gallons (gal).
- To reverse, multiply the imperial gallon value by 16.
Worked examples
Example 1 — Convert 1 cup to gal:
1 × 0.0625 = 0.0625 gal
Example 2 — Convert 100 cup to gal:
100 × 0.0625 = 6.25 gal
Real-world example — Packaging gauge
A 4-imperial cup plastic bag thickness is a common spec for grocery and freezer bags. Converting from imperial cups to imperial gallons is what packaging buyers do whenever they bridge US and metric supplier quotes.
4 cup × 0.0625 = 0.25 gal
Real-world example — Plastic film and laminate thickness
A 500-imperial cup 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 cup × 0.0625 = 31.25 gal
Imperial Cup to Imperial Gallon conversion table
Standard reference values for converting imperial cups to imperial gallons:
| Imperial Cup [cup] | Imperial Gallon [gal] |
|---|---|
| 0.01 | 0.000625 |
| 0.1 | 0.00625 |
| 1 | 0.0625 |
| 2 | 0.125 |
| 3 | 0.1875 |
| 4 | 0.25 |
| 5 | 0.3125 |
| 10 | 0.625 |
| 20 | 1.25 |
| 30 | 1.875 |
| 40 | 2.5 |
| 50 | 3.125 |
| 100 | 6.25 |
| 500 | 31.25 |
| 1000 | 62.5 |
Frequently asked questions
How many imperial gallons is 1 imperial cup?
How do I convert imperial cups to imperial gallons?
How do I convert imperial gallons back to imperial cups?
How many imperial gallons is 100 imperial cups?
Popular volume unit conversions
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Metric / SI (3 units)
US Customary (Liquid) (1 units)
Imperial (UK) (1 units)
Cubic (length-derived) (1 units)
Sources & references
Conversion factor (1 cup = 0.0625 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.