cc to Oz Converter
Convert cubic centimeters to fluid ounces. Since 1 cc equals 1 mL, this divides by the fluid-ounce size — 29.5735 mL for US or 28.4131 mL for UK imperial — and also shows teaspoons.
Example: with Volume in cc (mL) 30 · Fluid ounce type US fluid ounce (29.5735 mL) → Fluid ounces: 1.01 fl oz (US).
- Same volume in mL30 mL
- US teaspoons6.09 tsp
Computed by the calculator below using its default values. Change any input to see your own numbers.
cc = mL, so fl oz = cc ÷ 29.5735 (US) or ÷ 28.4131 (UK). A cc is a volume, not a weight, so this is fluid ounces — not ounces on a scale.
cc, mL, and fluid ounces
A cubic centimeter and a milliliter are the same volume, so the only real work here is dividing by the size of a fluid ounce. The catch is that a fluid ounce is not universal: the US customary fluid ounce is 29.5735 mL, while the UK imperial fluid ounce is smaller at 28.4131 mL. A recipe or medicine bottle labeled in ounces means one or the other, and mixing them shifts every result by about 4 percent.
Keep the distinction between fluid ounces and weight ounces firmly in mind. This page converts volume to volume. Thirty cc of water and thirty cc of honey are both about one US fluid ounce, but they weigh very different amounts — weight needs density, not this converter.
How it’s calculated
1 cc = 1 mL exactly. Fluid ounces: US = cc ÷ 29.5735295625; UK imperial = cc ÷ 28.4130625. Teaspoons use 1 US tsp = 4.92892 mL.
Converts fluid volume only. A fluid ounce measures volume, not the weight ounce read on a scale; those are unrelated without the substance's density.
cc to US fluid ounces
| cc (mL) | US fl oz | US teaspoons |
|---|---|---|
| 5 cc | 0.17 fl oz | 1.01 tsp |
| 15 cc | 0.51 fl oz | 3.04 tsp |
| 30 cc | 1.01 fl oz | 6.09 tsp |
| 100 cc | 3.38 fl oz | 20.29 tsp |
| 250 cc | 8.45 fl oz | 50.72 tsp |
Computed with 1 cc = 1 mL, US fl oz = 29.5735 mL, tsp = 4.92892 mL.
Common mistakes
- Confusing fluid ounces (volume) with weight ounces read on a scale.
- Using the UK ounce for a US label or vice versa — they differ by about 4 percent.
- Assuming cc needs a conversion factor to become mL; the two are identical.
- Rounding too early on small medical volumes where the second decimal matters.
Frequently asked questions
How many cc are in a fluid ounce?
A US fluid ounce is 29.5735 cc, and a UK imperial fluid ounce is 28.4131 cc. Since cc equals mL, those are the same as the milliliter figures you already know.
How do I convert cc to ounces?
Divide the cc value by 29.5735 for US fluid ounces or 28.4131 for UK. For example, 30 cc is 30 ÷ 29.5735 = about 1.01 US fluid ounces.
Is a cc the same as a mL?
Yes, exactly. One cubic centimeter equals one milliliter, so a 30 cc measurement is 30 mL before you convert to ounces.
Does this give weight ounces?
No. This converts volume to fluid ounces. To get weight in ounces you need the liquid's density, because equal volumes of water, oil, and honey weigh different amounts.