What is US fluid ounce?
A US fluid ounce is a volume unit equal to approximately 29.57 millilitres. It is used in the United States for beverage servings, cooking measurements, and product labelling.
Real-world uses
US fluid ounces are used for beverage labelling (a standard can of soda is 12 fl oz), cooking measurements, and cosmetics packaging in the United States. Cocktail recipes and bartending rely heavily on fluid ounce measurements (a standard shot is 1.5 fl oz).
History
The US fluid ounce derives from the English wine gallon tradition. When the US and UK diverged in measurement standards in the 19th century, their fluid ounces ended up slightly different. The US fluid ounce is defined as 1/128 of a US gallon.
Common mistakes
Confusing US fluid ounces with Imperial fluid ounces—they differ by about 4% (US: 29.57 mL, Imperial: 28.41 mL). Also, confusing fluid ounces (volume) with avoirdupois ounces (weight), which are completely different measurements.
What is cubic centimetre?
A cubic centimetre is a metric unit of volume equal to one thousandth of a litre, or 1 millilitre. It is used in medicine, engine displacement specifications, and precise scientific measurements.
Real-world uses
Cubic centimetres are used for engine displacement (e.g., a 250 cc motorcycle engine), medical syringe volumes (often marked "cc"), and laboratory measurements. Small container volumes and 3D printing material estimates are expressed in cm³.
History
The cubic centimetre was the standard volume unit in the CGS system. The abbreviation "cc" became entrenched in automotive and medical fields. The JCAHO (now The Joint Commission) recommended against "cc" in medical prescriptions to reduce errors, though it persists.
Common mistakes
Using "cc" interchangeably with mL is technically acceptable (they are equal), but some medical institutions discourage "cc" because it can be misread as "00" in handwritten prescriptions.
When is this conversion used?
Converting between US fluid ounce and cubic centimetre is common when working across metric and imperial systems, such as international trade, travel between countries with different measurement standards, or following instructions from a different region.
Worked examples
1 US fluid ounce = 29.57352956 cubic centimetre
1 cubic centimetre = 0.001 litre
How to convert US fluid ounce to cubic centimetre
To convert US fluid ounce to cubic centimetre, multiply the value by 29.57352956.
To convert cubic centimetre back to US fluid ounce, multiply by 0.03381402.
Measurement standards
The cubic metre is the SI derived unit of volume. The litre, equal to exactly one cubic decimetre (0.001 m³), is accepted by the BIPM for use alongside SI units. Both the lowercase "l" and uppercase "L" are approved symbols for the litre.
Did you know?
An Olympic swimming pool holds 2,500 cubic metres of water — about 2.5 million litres. The Amazon River discharges roughly 209,000 cubic metres per second, enough to fill 84 Olympic pools every single second.
Quick reference: US fluid ounce to cubic centimetre
| US fluid ounce | cubic centimetre |
|---|---|
| 0.1 | 2.95735296 |
| 0.5 | 14.78676478 |
| 1 | 29.57352956 |
| 2 | 59.14705912 |
| 5 | 147.86764781 |
| 10 | 295.73529562 |
| 25 | 739.33823906 |
| 50 | 1,478.67647812 |
| 100 | 2,957.35295625 |
| 250 | 7,393.38239062 |
| 500 | 14,786.76478125 |
| 1,000 | 29,573.5295625 |
Common values
| US fluid ounce | cubic centimetre | |
|---|---|---|
| A teaspoon | 0.16907011 US fluid ounce | 5 cubic centimetre |
| A cup of coffee | 8.45350568 US fluid ounce | 250 cubic centimetre |
| A water bottle | 16.90701135 US fluid ounce | 500 cubic centimetre |
| A bathtub | 10,144.20681055 US fluid ounce | 300,000 cubic centimetre |
| A swimming pool (Olympic) | 84,535,056.7546075 US fluid ounce | 2.500000e+09 cubic centimetre |
Available Volume units
More US fluid ounce conversions
- Convert US fluid ounce to litre
- Convert US fluid ounce to millilitre
- Convert US fluid ounce to US gallon
- Convert US fluid ounce to cubic metre
- Convert US fluid ounce to Imperial gallon
- Convert US fluid ounce to Imperial fluid ounce
- Convert US fluid ounce to teaspoon (metric)
- Convert US fluid ounce to tablespoon (metric)
- Convert US fluid ounce to cubic centimetre