UK Fluid Ounces to Milliliters (imp fl oz to mL) Converter
1 UK fluid ounce (imp fl oz) = 28.4131 milliliters (mL). To convert UK fluid ounces to milliliters, multiply by 28.4131: 25 imp fl oz × 28.4131 = 710.327 mL. Also searched as fl oz to ml UK, imperial fluid ounce to ml, UK fluid ounces to millilitres.
Quick facts
- 1 imp fl oz = 28.4131 mL
- 1 mL = 0.0351951 imp fl oz
- Formula: mL = imp fl oz × 28.4131
- Quick estimate: multiply by about 28
How to convert UK fluid ounces to milliliters
- Write down the number of UK fluid ounces you have.
- Multiply it by 28.4131 (the number of milliliters in one UK fluid ounce).
- Round the result to the precision you need.
Worked example: 25 imp fl oz × 28.4131 = 710.327 mL.
To convert milliliters back to UK fluid ounces, multiply by 0.0351951, or divide by 28.4131.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
UK Fluid Ounces to Milliliters conversion table
| UK Fluid Ounces [imp fl oz] | Milliliters [mL] |
|---|---|
| 0.01 imp fl oz | 0.284130625 mL |
| 0.1 imp fl oz | 2.84130625 mL |
| 1 imp fl oz | 28.4130625 mL |
| 2 imp fl oz | 56.826125 mL |
| 3 imp fl oz | 85.2391875 mL |
| 5 imp fl oz | 142.0653125 mL |
| 10 imp fl oz | 284.130625 mL |
| 20 imp fl oz | 568.26125 mL |
| 50 imp fl oz | 1420.653125 mL |
| 100 imp fl oz | 2841.30625 mL |
| 1000 imp fl oz | 28413.0625 mL |
imp fl oz to mL chart from 1 to 100
- 1 imp fl oz 28.4131 mL
- 2 imp fl oz 56.8261 mL
- 3 imp fl oz 85.2392 mL
- 4 imp fl oz 113.652 mL
- 5 imp fl oz 142.065 mL
- 6 imp fl oz 170.478 mL
- 7 imp fl oz 198.891 mL
- 8 imp fl oz 227.305 mL
- 9 imp fl oz 255.718 mL
- 10 imp fl oz 284.131 mL
- 11 imp fl oz 312.544 mL
- 12 imp fl oz 340.957 mL
- 13 imp fl oz 369.37 mL
- 14 imp fl oz 397.783 mL
- 15 imp fl oz 426.196 mL
- 16 imp fl oz 454.609 mL
- 17 imp fl oz 483.022 mL
- 18 imp fl oz 511.435 mL
- 19 imp fl oz 539.848 mL
- 20 imp fl oz 568.261 mL
- 25 imp fl oz 710.327 mL
- 30 imp fl oz 852.392 mL
- 35 imp fl oz 994.457 mL
- 40 imp fl oz 1136.52 mL
- 45 imp fl oz 1278.59 mL
- 50 imp fl oz 1420.65 mL
- 55 imp fl oz 1562.72 mL
- 60 imp fl oz 1704.78 mL
- 65 imp fl oz 1846.85 mL
- 70 imp fl oz 1988.91 mL
- 75 imp fl oz 2130.98 mL
- 80 imp fl oz 2273.04 mL
- 85 imp fl oz 2415.11 mL
- 90 imp fl oz 2557.18 mL
- 95 imp fl oz 2699.24 mL
- 100 imp fl oz 2841.31 mL
Milliliters to UK Fluid Ounces conversion table
| Milliliters [mL] | UK Fluid Ounces [imp fl oz] |
|---|---|
| 0.01 mL | 0.0003519508 imp fl oz |
| 0.1 mL | 0.003519508 imp fl oz |
| 1 mL | 0.0351950797 imp fl oz |
| 2 mL | 0.0703901595 imp fl oz |
| 3 mL | 0.1055852392 imp fl oz |
| 5 mL | 0.1759753986 imp fl oz |
| 10 mL | 0.3519507973 imp fl oz |
| 20 mL | 0.7039015946 imp fl oz |
| 50 mL | 1.7597539864 imp fl oz |
| 100 mL | 3.5195079728 imp fl oz |
| 1000 mL | 35.1950797279 imp fl oz |
UK Fluid Ounces vs Milliliters
| UK Fluid Ounce | Milliliter | |
|---|---|---|
| Symbol | imp fl oz | mL |
| Equals | 1 imp fl oz = 28.4131 mL | 1 mL = 0.0351951 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 milliliter?
One thousandth of a liter. Used for small liquid quantities in cooking, medicine, and packaging.
Imperial fluid ounces in millilitres
An imperial fluid ounce is 28.41 ml, slightly smaller than a US fluid ounce (29.57 ml). Older British and Canadian recipes, baby bottles and some spirit measures use the imperial version.
- 1 imp fl oz = 28.4131 ml
- 5 imp fl oz (a quarter pint) = 142.1 ml
- 10 imp fl oz (half pint) = 284.1 ml
- 20 imp fl oz (one pint) = 568.26 ml
If your recipe is American, use the US fl oz to ml page: on a cupful the difference is about 4%.
When You Need to Convert UK Fluid Ounces to Milliliters
UK fluid ounces are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes, while milliliters are used mainly in Canada, the UK and most of the world, and in US science, medicine and nutrition labels. Because the two units come from different systems, Americans, Britons and Canadians often need it when buying from each other online, following each other's recipes or instructions, or filling in official forms.
How big is 1 imp fl oz compared with 1 mL?
1 imp fl oz is 28.4131 times the size of 1 mL, so the number gets bigger when you convert UK fluid ounces to milliliters.
UK Fluid Ounces to Milliliters without a calculator
- In your head: multiply by 30 (about 5.6% off). 1 imp fl oz × 30 ≈ 30 mL.
- Closer estimate: multiply by 28 (within 1.5%).
Real-world imp fl oz to mL examples
| Example | UK Fluid Ounces | Milliliters |
|---|---|---|
| One imperial pint | 20 imp fl oz | 568.261 mL |
| Half a pint | 10 imp fl oz | 284.131 mL |
| One imperial fluid ounce | 1 imp fl oz | 28.4131 mL |
| A can of soft drink | 11.6144 imp fl oz | 330 mL |
| A water bottle | 17.5975 imp fl oz | 500 mL |
| A wine bottle | 26.3963 imp fl oz | 750 mL |
How exact is the imp fl oz to mL factor?
The factor is exact by definition, so any error comes only from rounding. For everyday use, 3 significant figures are plenty; for engineering or invoices, keep 5 or more.
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 milliliters
One millilitre equals one cubic centimetre (cc), the unit used on syringes.
What people convert next
Next, you might want us fluid ounces to milliliters, milliliters to us cups, milliliters to us fluid ounces and milliliters to uk pints. 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 calorie calculator on Adzita.
Frequently asked questions
How many ml is 1 fl oz in the UK?
1 imperial fluid ounce is 28.4131 ml.
Are UK and US fluid ounces the same?
No. A US fluid ounce is 29.5735 ml, about 4% larger than the imperial fluid ounce.
How many milliliters are in a UK fluid ounce?
There are 28.4131 milliliters in 1 UK fluid ounce (1 imp fl oz = 28.4130625 mL).
How many UK fluid ounces are in a milliliter?
There are 0.0351951 UK fluid ounces in 1 milliliter (1 mL = 0.0351950797 imp fl oz).
How do I convert UK fluid ounces to milliliters?
Use mL = imp fl oz × 28.4131. So 10 imp fl oz becomes 284.131 mL; for the reverse, multiply by 0.0351951.
What is 10 imp fl oz in milliliters?
10 imp fl oz = 284.131 mL.
What is 100 imp fl oz in milliliters?
100 imp fl oz = 2,841.31 mL.
Is the imp fl oz to mL 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 milliliters?
In your head: multiply by 30 (about 5.6% off). 1 imp fl oz × 30 ≈ 30 mL.
How many milliliters is 10 imp fl oz (half a pint)?
10 imp fl oz = 284.131 mL.
How many UK fluid ounces is a water bottle (500 mL)?
500 mL = 17.5975 imp fl oz.
Related conversions
Popular volume conversions
- Liters to US Gallons
- US Gallons to Liters
- Milliliters to US Cups
- US Cups to Milliliters
- US Tablespoons to Milliliters
- US Teaspoons to Milliliters
- Milliliters to US Fluid Ounces
- US Fluid Ounces to Milliliters
- US Tablespoons to US Fluid Ounces
- Liters to UK Gallons
- UK Gallons to Liters
- UK Gallons to US Gallons
Convert UK fluid ounces to other units
- UK Fluid Ounces to Liters
- UK Fluid Ounces to Cubic Meters
- UK Fluid Ounces to US Teaspoons
- UK Fluid Ounces to US Tablespoons
- UK Fluid Ounces to US Fluid Ounces
- UK Fluid Ounces to US Cups
- UK Fluid Ounces to US Pints
- UK Fluid Ounces to US Quarts
- UK Fluid Ounces to US Gallons
- UK Fluid Ounces to UK Pints
- UK Fluid Ounces to UK Quarts
- UK Fluid Ounces to UK Gallons
- UK Fluid Ounces to Cubic Feet
- UK Fluid Ounces to Cubic Inches
Convert other units to milliliters
- Liters to Milliliters
- Cubic Meters to Milliliters
- US Teaspoons to Milliliters
- US Tablespoons to Milliliters
- US Fluid Ounces to Milliliters
- US Cups to Milliliters
- US Pints to Milliliters
- US Quarts to Milliliters
- US Gallons to Milliliters
- UK Pints to Milliliters
- UK Quarts to Milliliters
- UK Gallons to Milliliters
- Cubic Feet to Milliliters
- Cubic Inches to Milliliters
Open the full volume converter with every unit →