Cubic Centimeters to Fluid Ounces
Type a value in either box to convert between cubic centimeters and fluid ounces. The factor is 0.033814.
| Cubic Centimeters | Fluid Ounces |
|---|---|
| 1 cm³ | 0.033814 fl oz |
| 2 cm³ | 0.067628 fl oz |
| 3 cm³ | 0.101442 fl oz |
| 5 cm³ | 0.16907 fl oz |
| 10 cm³ | 0.33814 fl oz |
| 25 cm³ | 0.845351 fl oz |
| 50 cm³ | 1.690701 fl oz |
| 100 cm³ | 3.381402 fl oz |
How to use
- Enter a value in the Cubic Centimeters field.
- The Fluid Ounces figure appears immediately — no button to press.
- Typing in the Fluid Ounces field converts back to Cubic Centimeters the same way.
- Use the reference table for the values that come up most often.
Cubic Centimeters to Fluid Ounces formula
To convert cubic centimeters to fluid ounces, multiply by 0.0338140227.
fl oz = cm³ × 0.0338140227
Why this factor: the cubic centimeter and the fluid ounce are both defined against the liter, so dividing one definition by the other gives 0.0338140227 directly. Both definitions are set out in full below.
To go the other way, divide by 0.0338140227 — or use the Fluid Ounces to Cubic Centimeters converter, which is the same calculation reversed.
Worked example
Take 2 cm³ and multiply by the factor 0.0338140227: the result is 0.067628 fl oz.
2 cm³ × 0.0338140227 = 0.067628 fl oz
The converter above does this for any value you type, in either direction.
What is a cubic centimeter?
A cubic centimeter is the volume of a one-centimeter cube, identical to a milliliter.
Definition: Exactly 1×10⁻⁶ cubic meter, which is exactly 1 mL.
Where it is used: Engine displacement on motorcycles and small engines, and medical volumes where it is written 'cc'.
What is a fluid ounce?
A US fluid ounce is a small liquid volume, one eighth of a cup.
Definition: Exactly one 128th of a US liquid gallon, so exactly 29.5735295625 milliliters.
Where it is used: Beverage cans and bottles, cosmetics, and small liquid quantities in the US.
Worth knowing: Measures volume, not weight — a fluid ounce of water weighs about 1.04 avoirdupois ounces. The imperial fluid ounce is 28.41 mL.
Cubic Centimeters vs Fluid Ounces
The cubic centimeter is a metric unit while the fluid ounce is a US customary unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many fluid ounces are in a cubic centimeter?
One cubic centimeter equals 0.0338140227 fluid ounces.
What is the formula to convert cubic centimeters to fluid ounces?
Multiply the number of cubic centimeters by 0.0338140227. To reverse it, divide by 0.0338140227 instead.
How do I convert fluid ounces back to cubic centimeters?
Divide by 0.0338140227, which is the same as multiplying by 29.5735296.
How many fluid ounces are in 10 cubic centimeters?
10 cm³ works out to 0.33814 fl oz.
Is there anything to watch out for with fluid ounces?
Measures volume, not weight — a fluid ounce of water weighs about 1.04 avoirdupois ounces. The imperial fluid ounce is 28.41 mL.
How is the cubic centimeter defined?
Exactly 1×10⁻⁶ cubic meter, which is exactly 1 mL.