Imperial Fluid Ounce to Milliliter Converter
One Imperial Fluid Ounce equals 28.4130625 Milliliter (1 imp-fl-oz = 28.4130625 ml). Multiply a Imperial Fluid Ounce value by 28.4130625 to get the equivalent in Milliliter. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
ml = imp-fl-oz × 28.4130625
Multiply the Imperial Fluid Ounce value by 28.4130625 to get the equivalent value in Milliliter.
Example Conversions
1 Imperial Fluid Ounce (imp-fl-oz)
28.4130625 Milliliter (ml)
5 Imperial Fluid Ounce (imp-fl-oz)
142.0653125 Milliliter (ml)
10 Imperial Fluid Ounce (imp-fl-oz)
284.130625 Milliliter (ml)
25 Imperial Fluid Ounce (imp-fl-oz)
710.3265625 Milliliter (ml)
100 Imperial Fluid Ounce (imp-fl-oz)
2841.30625 Milliliter (ml)
Conversion Table
| Imperial Fluid Ounce (imp-fl-oz) | Milliliter (ml) |
|---|---|
| 0.1 | 2.84130625 |
| 0.5 | 14.20653125 |
| 1 | 28.4130625 |
| 2 | 56.826125 |
| 5 | 142.0653125 |
| 10 | 284.130625 |
| 25 | 710.3265625 |
| 50 | 1420.653125 |
| 100 | 2841.30625 |
| 250 | 7103.265625 |
| 500 | 14206.53125 |
| 1000 | 28413.0625 |
How to Convert Manually
Use these steps to convert Imperial Fluid Ounce values to Milliliter without the calculator.
- Write down the value in Imperial Fluid Ounce (imp-fl-oz) that you want to convert.
- Multiply that value by 28.4130625.
- For example, 10 Imperial Fluid Ounce × 28.4130625 = 284.130625 Milliliter.
- Label the result as Milliliter (ml).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Imperial Fluid Ounce and one Milliliter.
About Imperial Fluid Ounce and Milliliter
The imperial fluid ounce is about 28.413 milliliters, slightly smaller than the US fluid ounce, with 20 to the imperial pint rather than 16. Older UK packaging and recipes use it. The milliliter is one thousandth of a liter, identical to one cubic centimeter. Medicine doses, cosmetics, and recipe liquids are measured in milliliters. One Imperial Fluid Ounce equals 28.4130625 Milliliter (1 imp-fl-oz = 28.4130625 ml). Imperial Fluid Ounce to Milliliter conversion comes up most often in older UK packaging and in traditional British recipes, typically when figures need restating for liquid medicine doses.
Precision and Rounding: US and imperial volume units share names but differ in size (an imperial gallon is about 20% larger than a US gallon), so confirm which system a figure uses before converting. Kitchen work tolerates rounding to the nearest milliliter or quarter-teaspoon; fuel, chemistry, and brewing need three or more decimal places.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Imperial Fluid Ounce equals 426.1959375 Milliliter.
15 imp-fl-oz × 28.4130625 = 426.1959375 ml
FAQ
How do I convert Imperial Fluid Ounce to Milliliter?
Multiply the Imperial Fluid Ounce value by 28.4130625 to get the equivalent value in Milliliter.
What is the formula for Imperial Fluid Ounce to Milliliter?
The formula is ml = imp-fl-oz × 28.4130625.
How many Milliliter are in 1 Imperial Fluid Ounce?
1 Imperial Fluid Ounce equals 28.4130625 Milliliter.
Can I convert Milliliter back to Imperial Fluid Ounce?
Yes. 1 Milliliter equals 0.03519507973 Imperial Fluid Ounce, and the related converter can reverse the calculation.
What are common names for Imperial Fluid Ounce and Milliliter?
Imperial Fluid Ounce is shown as imp-fl-oz and may also be searched as imperial fluid ounces, uk fl oz. Milliliter is shown as ml and may also be searched as milliliters, millilitre, millilitres.
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