Volume conversion

Convert US customary cup to Imperial gallon

1 us customary cup (US cup) equals 0.052042136539 imperial gallon (imp gal). Enter any value below to convert from US cup to imp gal.

Enter a value and choose units. Results update instantly.

1 US cup = 0.0520421365 imp gal

All Volume units

From 1 US cup
UnitValue
Cubic meter 0.0002365882
Liter L 0.2365882365
Milliliter mL 236.5882365
Cubic centimeter cm³ 236.5882365
Cubic inch in³ 14.4375
Cubic foot ft³ 0.0083550347
US gallon US gal 0.0625
Imperial gallon imp gal 0.0520421365
US quart US qt 0.25
US customary cup US cup 1
US fluid ounce US fl oz 8
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Formula

US cup to imp gal conversion formula

Use this relationship for a direct conversion:

imp gal = US cup x 0.052042136539

Worked example

2 US cup = 0.1040842731 imp gal.

US liquid and Imperial gallon definitions are treated separately and use their exact legal values.

Quick reference

US customary cup to Imperial gallon table

US customary cup (US cup)Imperial gallon (imp gal)
0.010.0005204214
0.10.0052042137
10.0520421365
20.1040842731
50.2602106827
100.5204213654
251.3010534135
502.602106827
1005.2042136539
1,00052.0421365393

From unit

About the us customary cup

Eight US fluid ounces, about 236.588 milliliters.

Symbol: US cup

To unit

About the imperial gallon

Exactly 4.54609 liters.

Symbol: imp gal

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Related conversions

Source

Conversion standard

Definitions are checked against NIST Handbook 44, Appendix C. Calculations use full internal precision before display rounding.

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Questions

US cup to imp gal FAQ

How do you convert us customary cup to imperial gallon?

Use the formula imp gal = US cup x 0.052042136539. 1 us customary cup (US cup) equals 0.052042136539 imperial gallon (imp gal).

Is the US cup to imp gal conversion exact?

Both unit definitions use exact factors. Only the displayed decimal may be rounded.