CC to Oz — Cubic Centimeters to Fluid Ounces

One cubic centimeter (cc) equals 0.033814 US fluid ounces. Use the converter above to turn any cc value into fluid ounces instantly, or switch direction to convert oz back to cc. This converter uses the US fluid ounce standard (29.5735 mL per oz).

CC to Oz Formula

To convert cubic centimeters to US fluid ounces, multiply by 0.033814:

fl oz = cc × 0.033814

For example, to convert 100 cc to oz: 100 × 0.033814 = 3.3814 fl oz.

The conversion factor 0.033814 comes from dividing 1 by 29.5735 (the number of milliliters in one US fluid ounce). Since 1 cc equals exactly 1 mL, the same factor applies to both cc and mL conversions to oz. Precisely: 1 cc = 0.0338140227 fl oz, accurate to 10 significant figures per NIST SP 1038 measurement standards.

Oz to CC Formula

To convert US fluid ounces back to cubic centimeters, multiply by 29.5735:

cc = fl oz × 29.5735

For example, 8 fl oz × 29.5735 = 236.59 cc — the volume of one US cup.

CC to Oz Conversion Table

US vs UK Fluid Ounce — Which One Are You Converting?

There are two fluid ounce standards, and they are not the same:

• US fluid ounce: 29.5735 mL — used in the United States for beverages, recipes, and product labels
• UK (Imperial) fluid ounce: 28.4131 mL — used in the United Kingdom, Canada (informally), and some Commonwealth countries

This converter uses the US fluid ounce. If you need the UK fluid ounce, multiply cc by 0.035195 instead.

The difference matters for precision. Converting 500 cc gives 16.907 US fl oz but 17.598 UK fl oz — a difference of 0.69 oz. For cooking and everyday use this gap is small, but for pharmaceutical or laboratory measurements, always confirm which standard applies.

Common CC to Oz Conversions

These are the most frequently searched specific values:

• 30 cc = 1.014 fl oz: Approximately 1 fluid ounce — a standard single-dose medication vial size.
• 100 cc = 3.381 fl oz: A common small bottle or vial volume in pharmacy and cosmetics.
• 200 cc = 6.763 fl oz: Close to a standard drinking glass volume.
• 300 cc = 10.144 fl oz: Slightly more than 1 US cup (8 fl oz).
• 500 cc = 16.907 fl oz: The volume of a standard 500 mL water bottle — just over a US pint (16 fl oz).
• 1500 cc = 50.721 fl oz: A 1.5-liter water bottle — a common large beverage size.

What Is a Cubic Centimeter?

A cubic centimeter (cc or cm³) is the volume of a cube measuring 1 centimeter on each side. It is part of the metric system and equals exactly 1 milliliter. The cc unit is widely used in medicine (syringe volumes, dosage measurements), automotive engineering (engine displacement), and scientific laboratories.

Because 1 cc = 1 mL, converting cc to oz gives the same result as converting mL to oz. The two units are mathematically identical — the choice between them is a matter of convention in each field.

What Is a Fluid Ounce?

A fluid ounce (fl oz) is a unit of volume in both the US customary and Imperial measurement systems. The US fluid ounce is defined as exactly 29.5735295625 mL, making it slightly larger than the UK fluid ounce (28.4130625 mL). In the United States, fluid ounces are used on beverage containers, recipe measurements, and product labels. One US cup equals 8 fl oz. One US pint equals 16 fl oz. One US quart equals 32 fl oz.

CC to Oz in Medical and Pharmaceutical Contexts

Healthcare professionals regularly encounter both cc and fl oz when measuring medications, IV fluids, and syringe volumes. Common medical cc-to-oz reference values include:

• 1 cc syringe: 0.0338 fl oz — used for insulin and small-dose injections
• 3 cc syringe: 0.1014 fl oz — the most common general-purpose syringe
• 10 cc syringe: 0.3381 fl oz — used for larger-volume injections and aspiration
• 30 cc vial: 1.014 fl oz — a standard multi-dose medication vial. At 20 mg/mL concentration, it holds 600 mg of active ingredient.
• 250 cc IV bag: 8.454 fl oz — a small IV fluid bag used in hospitals
• 1000 cc IV bag: 33.814 fl oz — a standard 1-liter IV fluid bag

In clinical documentation, cc and mL are interchangeable (1 cc = 1 mL). When converting to fl oz for patient-facing instructions or US-standard packaging, always specify US fluid ounces to avoid confusion with the UK standard.

Limitations of This Converter

• US fluid ounce only: This converter uses the US standard (29.5735 mL per fl oz). For UK Imperial fluid ounces, multiply cc by 0.035195.
• Volume, not weight: Fluid ounces and cc both measure volume. Weight ounces (avoirdupois oz, used for food and dry goods) are different. 1 weight oz = 28.3495 grams — not the same as 1 fl oz.
• Not for engine displacement comparisons: Engine displacement in cc is a volume measurement. To compare with cubic inches used in some US engine specs, 1,000 cc = 61.02 cubic inches.

For related conversions, use DigiCalc's cc to mL converter, the cups to mL converter, or the full volume converter.