UK Fluid Ounces to US Gallons (imp fl oz to gal) Converter
1 UK fluid ounce (imp fl oz) = 0.00750594 US gallons (gal). To convert UK fluid ounces to US gallons, multiply by 0.00750594: 25 imp fl oz × 0.00750594 = 0.187648 gal.
Quick facts
- 1 imp fl oz = 0.00750594 gal
- 1 gal = 133.228 imp fl oz
- Formula: gal = imp fl oz × 0.00750594
- Quick estimate: multiply by about 0.0075
How to convert UK fluid ounces to US gallons
- Start with your measurement in UK fluid ounces.
- Multiply it by 0.00750594 (the number of US gallons in one UK fluid ounce).
- Round the result to the precision you need.
Worked example: 25 imp fl oz × 0.00750594 = 0.187648 gal.
To convert US gallons back to UK fluid ounces, multiply by 133.228, or divide by 0.00750594.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
UK Fluid Ounces to US Gallons conversion table
| UK Fluid Ounces [imp fl oz] | US Gallons [gal] |
|---|---|
| 0.01 imp fl oz | 0.0000750594 gal |
| 0.1 imp fl oz | 0.0007505937 gal |
| 1 imp fl oz | 0.007505937 gal |
| 2 imp fl oz | 0.0150118741 gal |
| 3 imp fl oz | 0.0225178111 gal |
| 5 imp fl oz | 0.0375296852 gal |
| 10 imp fl oz | 0.0750593703 gal |
| 20 imp fl oz | 0.1501187407 gal |
| 50 imp fl oz | 0.3752968517 gal |
| 100 imp fl oz | 0.7505937034 gal |
| 1000 imp fl oz | 7.5059370344 gal |
imp fl oz to gal chart from 1 to 100
- 1 imp fl oz 0.00750594 gal
- 2 imp fl oz 0.0150119 gal
- 3 imp fl oz 0.0225178 gal
- 4 imp fl oz 0.0300237 gal
- 5 imp fl oz 0.0375297 gal
- 6 imp fl oz 0.0450356 gal
- 7 imp fl oz 0.0525416 gal
- 8 imp fl oz 0.0600475 gal
- 9 imp fl oz 0.0675534 gal
- 10 imp fl oz 0.0750594 gal
- 11 imp fl oz 0.0825653 gal
- 12 imp fl oz 0.0900712 gal
- 13 imp fl oz 0.0975772 gal
- 14 imp fl oz 0.105083 gal
- 15 imp fl oz 0.112589 gal
- 16 imp fl oz 0.120095 gal
- 17 imp fl oz 0.127601 gal
- 18 imp fl oz 0.135107 gal
- 19 imp fl oz 0.142613 gal
- 20 imp fl oz 0.150119 gal
- 25 imp fl oz 0.187648 gal
- 30 imp fl oz 0.225178 gal
- 35 imp fl oz 0.262708 gal
- 40 imp fl oz 0.300237 gal
- 45 imp fl oz 0.337767 gal
- 50 imp fl oz 0.375297 gal
- 55 imp fl oz 0.412827 gal
- 60 imp fl oz 0.450356 gal
- 65 imp fl oz 0.487886 gal
- 70 imp fl oz 0.525416 gal
- 75 imp fl oz 0.562945 gal
- 80 imp fl oz 0.600475 gal
- 85 imp fl oz 0.638005 gal
- 90 imp fl oz 0.675534 gal
- 95 imp fl oz 0.713064 gal
- 100 imp fl oz 0.750594 gal
US Gallons to UK Fluid Ounces conversion table
| US Gallons [gal] | UK Fluid Ounces [imp fl oz] |
|---|---|
| 0.01 gal | 1.3322786954 imp fl oz |
| 0.1 gal | 13.3227869541 imp fl oz |
| 1 gal | 133.2278695406 imp fl oz |
| 2 gal | 266.4557390813 imp fl oz |
| 3 gal | 399.6836086219 imp fl oz |
| 5 gal | 666.1393477032 imp fl oz |
| 10 gal | 1332.2786954064 imp fl oz |
| 20 gal | 2664.5573908128 imp fl oz |
| 50 gal | 6661.3934770319 imp fl oz |
| 100 gal | 13322.7869540638 imp fl oz |
| 1000 gal | 133227.8695406382 imp fl oz |
UK Fluid Ounces vs US Gallons
| UK Fluid Ounce | US Gallon | |
|---|---|---|
| Symbol | imp fl oz | gal |
| Equals | 1 imp fl oz = 0.00750594 gal | 1 gal = 133.228 imp fl oz |
What is a UK fluid ounce?
A UK imperial unit equal to 1/20 of an imperial pint (exactly 28.4130625 ml). Used in the UK and Canada on older recipes, drinks measures and some bottle labels.
What is a US gallon?
A US customary unit equal to 4 quarts. Used in the US for fuel, milk, and paint.
Who Converts UK Fluid Ounces to US Gallons?
UK fluid ounces are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes, while US gallons are used mainly in the United States. Canada and the UK use a mix of metric and imperial units while the US uses customary units, so students, engineers, travellers and shoppers in all three countries switch between them often.
How big is 1 imp fl oz compared with 1 gal?
1 imp fl oz is only 0.00750594 of 1 gal: you need 133.228 UK fluid ounces to make 1 gal, so the number gets smaller when you convert.
UK Fluid Ounces to US Gallons without a calculator
- In your head: multiply by 0.008 (about 6.6% off). 20 imp fl oz × 0.008 ≈ 0.16 gal.
- Closer estimate: multiply by 0.0075 (within 0.079%).
- Or divide: divide by 130 (within 2.4%), which is often easier than multiplying by a small decimal.
Real-world imp fl oz to gal examples
| Example | UK Fluid Ounces | US Gallons |
|---|---|---|
| One imperial pint | 20 imp fl oz | 0.150119 gal |
| Half a pint | 10 imp fl oz | 0.0750594 gal |
| One imperial fluid ounce | 1 imp fl oz | 0.00750594 gal |
| A car fuel tank | 1998.42 imp fl oz | 15 gal |
| A gallon of milk | 133.228 imp fl oz | 1 gal |
| A hot-water heater | 6661.39 imp fl oz | 50 gal |
How exact is the imp fl oz to gal factor?
The factor is exact by definition, so any error comes only from rounding. Round the final answer, not the factor, and match the precision of the number you started with.
Mistakes to avoid
- US and imperial (UK) measures share names but not sizes. Check which one a recipe, label or fuel figure uses before converting.
Background on UK fluid ounces and US gallons
The US gallon is the old English wine gallon of exactly 231 cubic inches.
Keep converting
Related conversions you may need next: us fluid ounces to us gallons, uk fluid ounces to uk gallons, us gallons to liters and us gallons to uk gallons. The full volume converter lists every unit.
On pakmath.com, the percentage calculator is a useful next step, as is the scientific calculator; for related everyday maths, try the gas mileage calculator on Adzita.
Frequently asked questions
How many US gallons are in a UK fluid ounce?
There are 0.00750594 US gallons in 1 UK fluid ounce (1 imp fl oz = 0.007505937 gal).
How many UK fluid ounces are in a US gallon?
There are 133.228 UK fluid ounces in 1 US gallon (1 gal = 133.2278695406 imp fl oz).
How do I convert UK fluid ounces to US gallons?
Use gal = imp fl oz × 0.00750594. So 10 imp fl oz becomes 0.0750594 gal; for the reverse, multiply by 133.228.
What is 10 imp fl oz in US gallons?
10 imp fl oz = 0.0750594 gal.
What is 100 imp fl oz in US gallons?
100 imp fl oz = 0.750594 gal.
Is the imp fl oz to gal conversion exact?
Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.
What is an easy way to convert UK fluid ounces to US gallons?
In your head: multiply by 0.008 (about 6.6% off). 20 imp fl oz × 0.008 ≈ 0.16 gal.
How many US gallons is 1 imp fl oz (one imperial fluid ounce)?
1 imp fl oz = 0.00750594 gal.
How many UK fluid ounces is a hot-water heater (50 gal)?
50 gal = 6661.39 imp fl oz.
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