General
CC to Oz Converter
Convert volume in cubic centimeters (cc) to fluid ounces (oz) for both US and UK measurements.
Reviewed by the calculator.uk.com Team · Last reviewed 19 May 2026 · Our methodology
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Related to CC to Oz Converter
The CC to Oz Converter is a tool that converts volume measurements from cubic centimeters (cc or cm³) to fluid ounces (fl oz) for both US and UK (Imperial) measurements. Since the US and UK use slightly different fluid ounce measurements, the calculator provides both conversions to ensure accuracy regardless of your location or needs.
Conversion Formulas
• 1 cc = 0.033814 US fluid ounces
• 1 cc = 0.035195 UK fluid ounces
The calculator uses these precise conversion factors to ensure accurate results. The difference between US and UK fluid ounces stems from historical developments in measurement systems, which is why it's important to specify which system you're using in practical applications.
When you enter a volume in cubic centimeters, the calculator instantly provides two conversion results. Understanding these results is crucial for accurate measurements in different contexts.
US Fluid Ounces
The US fluid ounce is commonly used in the United States and is slightly larger than its cubic centimeter equivalent. One US fluid ounce equals approximately 29.5735 cubic centimeters. This measurement is standard for recipes, medical dosing, and product labeling in the US.
UK (Imperial) Fluid Ounces
The UK fluid ounce, also known as the Imperial fluid ounce, is used in the United Kingdom and some Commonwealth countries. One UK fluid ounce equals approximately 28.4131 cubic centimeters. This measurement is commonly used in British recipes and product measurements.
1. Why are US and UK fluid ounces different?
The difference between US and UK fluid ounces is historical. The UK standardized their measurements earlier, while the US developed their system independently. This led to slightly different definitions of the fluid ounce, with the UK version being about 4% larger than the US version.
2. Which fluid ounce measurement should I use?
Use US fluid ounces if you're following American recipes or measuring products labeled in US measurements. Use UK fluid ounces for British recipes or products labeled with Imperial measurements. When precision is important, always check which system the original measurement uses.
3. Are cc and milliliters (mL) the same?
Yes, one cubic centimeter (cc) is exactly equal to one milliliter (mL). These units are interchangeable in all calculations. The term 'cc' is more commonly used in medical contexts, while 'mL' is more common in general measurements and cooking.
4. How accurate is this calculator?
This calculator uses precise conversion factors to three decimal places, which is more than sufficient for most practical applications. The conversions are based on the standard definitions of 1 US fluid ounce = 29.5735 cc and 1 UK fluid ounce = 28.4131 cc.
5. What is the scientific source for this calculator?
The US fluid ounce is defined via the US gallon of exactly 231 cubic inches, giving 29.5735 mL, while the UK fluid ounce comes from the imperial gallon of exactly 4.54609 litres, giving 28.4131 mL, two separate historical measurement systems that never fully converged. Because cc and mL are identical by definition, converting cc to fluid ounces is simply a matter of dividing by whichever of these two fixed reference volumes applies.