Oz to cc Converter — Fluid Ounces to Cubic Centimetres
Convert fluid ounces to cubic centimetres (cc) — the unit used in medicine, pharmacology, and lab science. Because 1 cc = 1 mL exactly, this is the same factor as oz-to-mL. Choose US or UK fluid ounces and enter a value to convert in either direction.
Fluid ounce type
fl oz
cc
cc = mL exactly; this is an exact unit definition conversion
- 1
Conversion factor
1 fl oz = 29.5735 cc = 29.5735 - 2
Cubic centimetres
4 × 29.5735 = 118.29
How does this calculator work?
cc = fl oz × 29.574 (US) or × 28.413 (UK). Since 1 cc = 1 mL exactly, the result is identical to an oz-to-mL conversion. 4 US fl oz = 118.3 cc. Enter ounces or cc and pick the oz standard to convert instantly.
Formula
How this is calculated
The cubic centimetre (cc or cm³) is a unit of volume in the metric system equal to exactly one millilitre (mL). It is widely used in medicine and pharmacology because syringes and IV bags are typically marked in cc rather than mL, even though the two are identical. The distinction is purely conventional.
A US fluid ounce equals exactly 29.5735295625 cc. A UK/Imperial fluid ounce equals exactly 28.4130625 cc. The conversion is exact by international definition, so there is no rounding error in the formula — only in how many decimal places are displayed. Choosing the correct oz standard matters: a US and UK fluid ounce differ by about 4%.
This converter works bidirectionally: enter fluid ounces to get cc, or enter cc to get fluid ounces. Common use cases include converting a medication dose from the oz-based measurement on a household spoon to the cc marking on a syringe, or interpreting US recipe volumes in metric.
Frequently asked questions
Yes, exactly. 1 cubic centimetre (cc or cm³) = 1 millilitre (mL) by definition in the SI metric system. The two terms are completely interchangeable; "cc" is preferred in medical settings while "mL" is standard in chemistry and SI usage.
1 US fluid ounce = 29.574 cc. 1 UK/Imperial fluid ounce = 28.413 cc. For quick estimation, 1 US fl oz ≈ 30 cc.
Syringes and IV equipment in many countries use cc as the standard unit by convention inherited from older scientific practice. Since cc = mL exactly, the numerical values are identical — a 5 cc syringe holds 5 mL of liquid.
Also known as
TG we-Calculate Editorial Team. (2026). Oz to cc Converter — Fluid Ounces to Cubic Centimetres [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/oz-to-cc-converter
TG we-Calculate Editorial Team. "Oz to cc Converter — Fluid Ounces to Cubic Centimetres." TG we-Calculate. 2026. https://we-calculate.com/calculator/oz-to-cc-converter.
TG we-Calculate Editorial Team, "Oz to cc Converter — Fluid Ounces to Cubic Centimetres," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/oz-to-cc-converter
@misc{wecalculate_oz_to_cc_converter, title = {Oz to cc Converter — Fluid Ounces to Cubic Centimetres}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/oz-to-cc-converter}}, year = {2026}, note = {TG we-Calculate} }
Did this calculator help you?