UK Fluid Ounces to UK Gallons (imp fl oz to imp gal) Converter
1 UK fluid ounce (imp fl oz) = 0.00625 UK gallons (imp gal). To convert UK fluid ounces to UK gallons, multiply by 0.00625: 25 imp fl oz × 0.00625 = 0.15625 imp gal.
Quick facts
- 1 imp fl oz = 0.00625 imp gal
- 1 imp gal = 160 imp fl oz
- Formula: imp gal = imp fl oz × 0.00625
- Quick estimate: multiply by about 0.0062
How to convert UK fluid ounces to UK gallons
- Write down the number of UK fluid ounces you have.
- Multiply it by 0.00625 (the number of UK gallons in one UK fluid ounce).
- Round the result to the precision you need.
Worked example: 25 imp fl oz × 0.00625 = 0.15625 imp gal.
To convert UK gallons back to UK fluid ounces, multiply by 160, or divide by 0.00625.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
UK Fluid Ounces to UK Gallons conversion table
| UK Fluid Ounces [imp fl oz] | UK Gallons [imp gal] |
|---|---|
| 0.01 imp fl oz | 0.0000625 imp gal |
| 0.1 imp fl oz | 0.000625 imp gal |
| 1 imp fl oz | 0.00625 imp gal |
| 2 imp fl oz | 0.0125 imp gal |
| 3 imp fl oz | 0.01875 imp gal |
| 5 imp fl oz | 0.03125 imp gal |
| 10 imp fl oz | 0.0625 imp gal |
| 20 imp fl oz | 0.125 imp gal |
| 50 imp fl oz | 0.3125 imp gal |
| 100 imp fl oz | 0.625 imp gal |
| 1000 imp fl oz | 6.25 imp gal |
imp fl oz to imp gal chart from 1 to 100
- 1 imp fl oz 0.00625 imp gal
- 2 imp fl oz 0.0125 imp gal
- 3 imp fl oz 0.01875 imp gal
- 4 imp fl oz 0.025 imp gal
- 5 imp fl oz 0.03125 imp gal
- 6 imp fl oz 0.0375 imp gal
- 7 imp fl oz 0.04375 imp gal
- 8 imp fl oz 0.05 imp gal
- 9 imp fl oz 0.05625 imp gal
- 10 imp fl oz 0.0625 imp gal
- 11 imp fl oz 0.06875 imp gal
- 12 imp fl oz 0.075 imp gal
- 13 imp fl oz 0.08125 imp gal
- 14 imp fl oz 0.0875 imp gal
- 15 imp fl oz 0.09375 imp gal
- 16 imp fl oz 0.1 imp gal
- 17 imp fl oz 0.10625 imp gal
- 18 imp fl oz 0.1125 imp gal
- 19 imp fl oz 0.11875 imp gal
- 20 imp fl oz 0.125 imp gal
- 25 imp fl oz 0.15625 imp gal
- 30 imp fl oz 0.1875 imp gal
- 35 imp fl oz 0.21875 imp gal
- 40 imp fl oz 0.25 imp gal
- 45 imp fl oz 0.28125 imp gal
- 50 imp fl oz 0.3125 imp gal
- 55 imp fl oz 0.34375 imp gal
- 60 imp fl oz 0.375 imp gal
- 65 imp fl oz 0.40625 imp gal
- 70 imp fl oz 0.4375 imp gal
- 75 imp fl oz 0.46875 imp gal
- 80 imp fl oz 0.5 imp gal
- 85 imp fl oz 0.53125 imp gal
- 90 imp fl oz 0.5625 imp gal
- 95 imp fl oz 0.59375 imp gal
- 100 imp fl oz 0.625 imp gal
UK Gallons to UK Fluid Ounces conversion table
| UK Gallons [imp gal] | UK Fluid Ounces [imp fl oz] |
|---|---|
| 0.01 imp gal | 1.6 imp fl oz |
| 0.1 imp gal | 16 imp fl oz |
| 1 imp gal | 160 imp fl oz |
| 2 imp gal | 320 imp fl oz |
| 3 imp gal | 480 imp fl oz |
| 5 imp gal | 800 imp fl oz |
| 10 imp gal | 1600 imp fl oz |
| 20 imp gal | 3200 imp fl oz |
| 50 imp gal | 8000 imp fl oz |
| 100 imp gal | 16000 imp fl oz |
| 1000 imp gal | 160000 imp fl oz |
UK Fluid Ounces vs UK Gallons
| UK Fluid Ounce | UK Gallon | |
|---|---|---|
| Symbol | imp fl oz | imp gal |
| Equals | 1 imp fl oz = 0.00625 imp gal | 1 imp gal = 160 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 UK gallon?
The imperial gallon, defined as exactly 4.54609 litres (UK Weights and Measures Act 1985); about 20% larger than the US gallon. Used in the UK and Canada for fuel economy (miles per gallon), garden and aquarium volumes, and older fuel prices.
Who Converts UK Fluid Ounces to UK Gallons?
UK fluid ounces are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes, while UK gallons are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes. Both units belong to the same family, so this conversion is mostly about changing scale to keep numbers readable.
How big is 1 imp fl oz compared with 1 imp gal?
1 imp fl oz is only 0.00625 of 1 imp gal: you need 160 UK fluid ounces to make 1 imp gal, so the number gets smaller when you convert.
UK Fluid Ounces to UK Gallons without a calculator
- In your head: multiply by 0.006 (about 4% off). 20 imp fl oz × 0.006 ≈ 0.12 imp gal.
- Closer estimate: multiply by 0.0062 (within 0.8%).
- Or divide: divide by 160 (exact), which is often easier than multiplying by a small decimal.
Real-world imp fl oz to imp gal examples
| Example | UK Fluid Ounces | UK Gallons |
|---|---|---|
| One imperial pint | 20 imp fl oz | 0.125 imp gal |
| Half a pint | 10 imp fl oz | 0.0625 imp gal |
| One imperial fluid ounce | 1 imp fl oz | 0.00625 imp gal |
| One imperial gallon | 160 imp fl oz | 1 imp gal |
| A small aquarium | 1600 imp fl oz | 10 imp gal |
| A garden water butt | 7200 imp fl oz | 45 imp gal |
How exact is the imp fl oz to imp 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
- This page uses the imperial (UK) measure. A US measure with the same name is smaller, so make sure your source is British or older Canadian.
Background on UK fluid ounces and UK gallons
The imperial gallon was introduced in 1824 and is defined as exactly 4.54609 litres.
What people convert next
Related conversions you may need next: us fluid ounces to uk gallons, uk fluid ounces to us gallons, uk gallons to liters and uk gallons to us gallons. The full volume converter lists every unit.
On pakmath.com, the percentage calculator is a useful next step; our sister site Adzita has a fuel cost calculator.
Frequently asked questions
How many UK gallons are in a UK fluid ounce?
There are 0.00625 UK gallons in 1 UK fluid ounce (1 imp fl oz = 0.00625 imp gal).
How many UK fluid ounces are in a UK gallon?
There are 160 UK fluid ounces in 1 UK gallon (1 imp gal = 160 imp fl oz).
How do I convert UK fluid ounces to UK gallons?
Multiply by 0.00625, or divide by 160 if that is easier. Example: 10 imp fl oz = 0.0625 imp gal.
What is 10 imp fl oz in UK gallons?
10 imp fl oz = 0.0625 imp gal.
What is 100 imp fl oz in UK gallons?
100 imp fl oz = 0.625 imp gal.
How accurate is this UK fluid ounce to UK gallon converter?
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 UK gallons?
In your head: multiply by 0.006 (about 4% off). 20 imp fl oz × 0.006 ≈ 0.12 imp gal.
How many UK gallons is 20 imp fl oz (one imperial pint)?
20 imp fl oz = 0.125 imp gal.
How many UK fluid ounces is a small aquarium (10 imp gal)?
10 imp gal = 1600 imp fl oz.
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