There are approximately 29.57 milliliters in an ounce. For practical purposes, 1 fluid ounce is often rounded up to 30ml in cooking and in daily measurements. This 1 fluid ounce to ml conversion of 29.57ml is based on the American system and is commonly used as a fluid ounce equivalent to milliliter.
Conversion Details
- US fluid ounce to milliliters: 1 US fluid ounce = 29.5735295625 ml
- Imperial (UK) fluid ounce to milliliters: 1 imperial fl oz = 28.4130742 ml
- Practical reconciliation: For daily use and cooking, 1 fl oz is often rounded to 30 ml when converting ounces to ml
Key takeaways
- THE The exact conversion from ounce to ml depends on whether you are using US or Imperial fluid ounces.
- US fluid ounces are slightly bigger than imperial fluid ounces when converted to ml
- For most household uses, the difference between US and Imperial fluid ounces is negligible when determining how many mls are in an ounce.
Common Conversions
- 16 fluid ounces (1 pint) ≈ 473.2 ml (United States) or 454.6 ml (Imperial)
- 8 fluid ounces (1 cup) ≈ 236.6 ml (United States) or 8oz (Imperial)
- 4 fluid ounces (1/2 cup) ≈ 118.3 ml (United States) or 113.7 ml (Imperial)
Conversion formulas
- To convert fl oz to ml (US): Multiply the volume in fl oz by 29.5735 to obtain the equivalent in fluid ounce milliliter
- To convert ml to fl oz (US): Divide the volume in ml by 29.5735
- For imperial measurements, use 28.4131 as a conversion factor to determine how many ml in an ounce
Cultural differences in use
- THE WE mainly uses US fluid ounceswhile the UNITED KINGDOM and other Commonwealth countries use Imperial Fluid Ounces for converting ounce to ml
- In the United Kingdom, pints (20 imperial fl oz) are commonly used for beer and milk
- Recipes may specify different volumes depending on their country of origin, so always check which system is used when converting ounces to ml.
FAQs
How many ml are in a US fluid ounce?
There are approximately 29.57 ml in a US fluid ounce. For practical reasons, this quantity is often rounded up to 30 ml.
What is the difference between US and Imperial fluid ounces in ml?
A US fluid ounce is approximately 29.57 ml, while an imperial fluid ounce is approximately 28.41 ml. The US fluid ounce is slightly larger.
How to quickly convert ounces to ml?
For a quick conversion from ounce to ml, multiply the number of fluid ounces by 30. This gives a close approximation for most everyday uses.
What is the equivalent in fluid ounce to milliliter for common measurements?
8 fl oz (1 cup) is approximately 236.6 ml (US) or 227.3 ml (Imperial). 16 fl oz (1 pint) is approximately 473.2 ml (US) or 454.6 ml (Imperial).
How can I accurately convert between fluid ounces and milliliters?
For an accurate ounce to ml conversion, multiply US fluid ounces by 29.5735 or imperial fluid ounces by 28.4131. To convert from ml to fl oz, divide by these same numbers.