# Ounces to cc Converter URL: https://speedycalculator.com/calculators/conversion/oz-to-cc/ Last updated: 2026-10-25 > Convert US fluid ounces (US fl oz) to cubic centimetres (cm³ (cc)): 1 US fluid ounce = 29.57353 cm³ (cc), so multiply by 29.57353 or divide by 0.033814023. Both fields are editable, so you can also type in cubic centimetres and get US fluid ounces back. ## Inputs - US fluid ounces (US fl oz) ## Results - Cubic centimetres ## Formula ``` 1 US fl oz = 29.57353 cm³ (cc) 1 cm³ (cc) = 0.033814023 US fl oz cm³ (cc) = US fl oz × 29.57353 ``` ## Explanation One U.S. fluid ounce is about 29.57 cc. Small-engine fuel mixes and medicine doses are often given in ounces and cc. ### How to use the Ounces to cc Converter - Type the number of US fluid ounces into the **US fluid ounces** field. Decimals such as 0.5 are fine. - Read the answer in **Cubic centimetres** – it updates as you type, with no button to press. - To convert the other way, type into **Cubic centimetres** and the US fluid ounces are recalculated. - Press **Copy results** to copy both values with the page title, or **Copy link** to share this exact conversion. This page converts only US fl oz ⇄ cm³ (cc). Need a different unit? Use the general volume converter, where you can choose any “from” and “to” unit. ### How it works Both units measure volume, so they are always in the same ratio: one US fluid ounce equals 29.57353 cubic centimetres. The calculator multiplies the number of US fluid ounces you type by 29.57353 to give cubic centimetres, and when you type into the cubic centimetres field it divides by the same factor to give US fluid ounces. Because the ratio never changes, doubling the US fluid ounces always doubles the cubic centimetres. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation). ### How to convert US fluid ounces to cubic centimetres - Write down the value in US fluid ounces, for example **1 US fl oz**. - Multiply by the conversion factor 29.57353 (because 1 US fluid ounce = 29.57353 cm³ (cc)). - 1 × 29.57353 = **29.57353 cm³ (cc)**. - To go back from cubic centimetres to US fluid ounces, divide by 29.57353 – or multiply by 0.033814023. ### US fl oz to cm³ (cc) conversion table US fluid ouncesCubic centimetresCubic centimetresUS fluid ounces0.5 US fl oz14.786765 cm³ (cc)1 cm³ (cc)0.033814023 US fl oz1 US fl oz29.57353 cm³ (cc)2 cm³ (cc)0.067628045 US fl oz2 US fl oz59.147059 cm³ (cc)5 cm³ (cc)0.16907011 US fl oz2.6 US fl oz76.891177 cm³ (cc)10 cm³ (cc)0.33814023 US fl oz3.2 US fl oz94.635295 cm³ (cc)20 cm³ (cc)0.67628045 US fl oz4 US fl oz118.29412 cm³ (cc)50 cm³ (cc)1.6907011 US fl oz6.4 US fl oz189.27059 cm³ (cc)100 cm³ (cc)3.3814023 US fl oz8 US fl oz236.58824 cm³ (cc)1,000 cm³ (cc)33.814023 US fl oz ### What is a US fluid ounce? The U.S. fluid ounce is 1/128 of a U.S. gallon, about 29.57 mL. It is a unit of volume: a fluid ounce of water weighs about one ounce, but other liquids do not. ### What is a cubic centimetre? A cubic centimetre (cc) equals one millilitre. Engine displacement and syringe volumes are commonly given in cc. ### Quick mental conversion For a fast estimate, multiply US fluid ounces by about **30** to get cubic centimetres; the error is about 1.4%. Use the calculator above when you need the exact figure. ### Common mistakes to avoid Mixing u.s. and uk gallons, pints and fluid ounces, assuming a cup is always 250 ml, and treating volume and weight as interchangeable for anything except water. ## Worked example Inputs — US fluid ounces: 1 US fl oz. Results — **Cubic centimetres = 29.57352956 cm³ (cc)**. ## FAQ **How many cc in an ounce?** About 29.57 cc. **How many cc in 2.6 oz (a common 2-stroke mix)?** About 76.9 cc. **How many cubic centimetres are in one US fluid ounce?** 1 US fl oz = 29.57353 cm³ (cc). **How many US fluid ounces are in one cubic centimetre?** 1 cm³ (cc) = 0.033814023 US fl oz. **How do I convert US fluid ounces to cubic centimetres?** Multiply the number of US fluid ounces by 29.57353. For example, 1 US fl oz × 29.57353 = 29.57353 cm³ (cc). **How do I convert cubic centimetres back to US fluid ounces?** Divide by 29.57353 (or multiply by 0.033814023), or simply type the value into the cubic centimetres field above. **What is 2 US fl oz in cubic centimetres?** 2 US fl oz = 59.147059 cm³ (cc). **Is this conversion exact?** Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit. **Can I convert to other units on this page?** This page converts only between US fluid ounces and cubic centimetres. To pick any volume unit, use the general volume converter linked under Related calculators. **What formula does the Ounces to cc Converter use?** 1 US fl oz = 29.57353 cm³ (cc). ## Sources - [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811) - [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)