The cc to fluid ounces converter converts a known volume. The grams to fl oz converter starts from mass and needs a density to calculate volume first. The shared output unit does not make their inputs interchangeable.
| Feature | CC to fluid ounces | Grams to fl oz |
|---|---|---|
| Inputs | Cubic centimeters | Grams, material preset, custom density when selected |
| Operation | cc ÷ 29.5735295625 | grams ÷ density in g/mL ÷ 29.5735295625 |
| Default | 100 cc → 3.3814 US fl oz | 100 g with publisher water preset 1 g/mL → 3.381 fl oz |
| Primary format | Up to 4 fractional places | Up to 3 fractional places |
| Supporting results | Entered cc, mL, L, separately labeled Imperial comparison | mL, density used, ingredient label |
For the US liquid convention, one gallon is 231 in³ and contains 128 fluid ounces. With the exact 2.54 cm inch, the derived factor is 29.5735295625 mL per US fl oz. Since one cc equals one mL, the cc form uses this volume factor directly. A fluid ounce here is volume, not a mass ounce.
The grams form’s seven material presets supply publisher-selected density numbers. This comparison describes their use without establishing those numbers as condition-independent material data. For a clearly hypothetical custom density of 2 g/mL, 100 g gives 50 mL and displays 1.691 fl oz. The form does not infer or measure density.
The grams computation uses the full fluid-ounce factor, but its Copy formats that factor as 29.5735 and the final result to up to three fractional places. That copied equation is a rounded presentation, not a record of every calculation digit. The cc form copies its input and result to up to four fractional places.
The cc panel also labels an Imperial comparison separately. This comparison makes no exact-definition claim for that additional convention. Choose between the forms from the dimension you know—volume, or mass plus density—without treating either result as recipe, clinical or measurement-method guidance.
Sources
- NIST SP 811, 2008 edition — Metric volume and exact length definitions only.
- NIST Handbook 44, 2026 edition — US liquid gallon of 231 cubic inches, 128 fluid ounces per gallon and exact inch definition, used to derive the US fluid-ounce volume factor. No density preset or Imperial definition claim.