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Convert Imperial Fluid Ounces to US Gallons

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Measurement

Volume Converter
10 sig. figures
Formula1 imp fl oz ร— 0.007505937034 = 0.007505937034 US gal
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About Volume Conversions

Volume trips people up because US customary and imperial units share names but not sizes. A US gallon (3.785 liters) runs about 17% smaller than an imperial gallon (4.546 liters), and the gap carries down into pints, quarts, and fluid ounces. Cooking is where it bites: a British recipe's pint of milk is 568 ml, an American pint only 473 ml. Science sidesteps the mess with metric volume, where 1 mL equals exactly 1 cmยณ. US and imperial variants stay separate below, with exact conversion chains holding precision across the swap.

Quick Conversions

Imperial Fluid OuncesUS Gallons
1 imp fl oz0.00750594 US gal
2 imp fl oz0.0150119 US gal
5 imp fl oz0.0375297 US gal
10 imp fl oz0.0750594 US gal
25 imp fl oz0.187648 US gal
50 imp fl oz0.375297 US gal
100 imp fl oz0.750594 US gal
250 imp fl oz1.87648 US gal
500 imp fl oz3.75297 US gal
1000 imp fl oz7.50594 US gal
Unit NameSymbolPer 1 Imperial Fluid Ounce
Cubic Centimetercmยณ28.4131
Cubic Footftยณ0.0010034
Cubic Inchinยณ1.73387
Cubic Metermยณ0.0000284131
Imperial Fluid Ounceimp fl oz1
Imperial Gallonimp gal0.00625
Imperial Pintimp pt0.05
LiterL0.0284131
MillilitermL28.4131
US CupUS cup0.120095
US Fluid OunceUS fl oz0.96076
US GallonUS gal0.00750594
US PintUS pt0.0600475
US QuartUS qt0.0300237
US TablespoonUS tbsp1.92152
US TeaspoonUS tsp5.76456

Frequently Asked Questions

How do I convert Imperial Fluid Ounces to US Gallons?

To convert Imperial Fluid Ounces to US Gallons, use the conversion where 1 Imperial Fluid Ounce (imp fl oz) = 0.00750594 US Gallons (US gal). For example, 1 Imperial Fluid Ounce = 0.00750594 US Gallons.

What are common Imperial Fluid Ounce to US Gallon conversions?

Here are common conversions: 1 Imperial Fluid Ounces = 0.00750594 US Gallons, 5 Imperial Fluid Ounces = 0.0375297 US Gallons, 10 Imperial Fluid Ounces = 0.0750594 US Gallons, 25 Imperial Fluid Ounces = 0.187648 US Gallons, 50 Imperial Fluid Ounces = 0.375297 US Gallons, 100 Imperial Fluid Ounces = 0.750594 US Gallons.

When would I need to convert Imperial Fluid Ounces to US Gallons?

Volume conversions come up when scaling recipes between metric (milliliters, liters) and US customary units (cups, fluid ounces), calculating fuel tank capacities across regions, and in chemistry and manufacturing where a precise liquid measurement decides the outcome.

How precise are the conversions?

All conversions use exact factors verified against NIST and ISO standards with up to 10 significant figures of precision. Results are calculated using IEEE 754 double-precision arithmetic, which provides approximately 15-17 significant digits. For temperature and other non-linear conversions, exact formulas are used rather than approximations.

Sources

Read our full methodology โ†’