Rum (40% ABV) Fluid Ounces to Grams
Snapshot
1 fluid ounce of rum (40% abv) equals 28.21 grams.
- Reference basis: 0.954 g/mL.
- Example: 2 fl oz = 56.43 g.
- This uses Rum (40% ABV) at 40% ABV (not pure ethanol), so density differs from alcohol-only references.
Interactive conversion
Converter Calculator
Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.
28.21 Grams
SwitchWith 1 fluid ounce of Rum (40% ABV), that equals 28.21 grams.
API and AI agent access
Rum (40% ABV) Fluid Ounces to Grams. Material: rum-40.
Machine-readable identifiers
- Conversion family
beverage- Source unit
fluid_ounce_us- Target unit
gram- Ingredient
rum-40
Use these identifiers in the API request. Sources and model limits also apply to software clients.
Example API request and response
POST /api/v1/convertRequest
{
"family": "beverage",
"value": 1,
"from": "fluid_ounce_us",
"to": "gram",
"material": "rum-40"
}Essential response
{
"ok": true,
"conversion": {
"family": "beverage",
"value": 1,
"from": "fluid_ounce_us",
"to": "gram",
"result": {
"raw": 28.213147202625,
"display": "28.21"
},
"canonicalPath": "/beverage/fluid-ounces-to-grams/rum-40/"
}
}Explanation
US fluid ounces convert to grams by multiplying with the verified 28.21 g/fl oz density derived from the US fluid ounce (29.57 mL) and Rum (40% ABV)'s grams-per-milliliter ratio.
Use the calculator to translate customary pours into grams for menus or recipes.
Rum (40% ABV) uses 0.954 g/mL in this dataset. That makes it 4.6% lighter by volume than water at the 1 g/mL reference. On the same basis, one US cup is about 225.7 g and one US fluid ounce is about 28.21 g.
Alcohol concentration affects density: a bottle with a materially different ABV can weigh differently for the same measured volume. These figures describe a reference conversion, not a guarantee for every brand, recipe, serving temperature, or production batch.
Evidence status for Rum (40% ABV): medium-confidence. Dataset note: Rum density near 40% ABV.
Common Conversion Values
| Fluid Ounces | Grams |
|---|---|
| 1/2 | 14.11 |
| 1 | 28.21 |
| 2 | 56.43 |
| 4 | 112.85 |
| 8 | 225.71 |
| 12 | 338.56 |
| 16 | 451.41 |
Methodology
Rum (40% ABV) density evidence
Rum (40% ABV) uses 0.954 g/mL in this dataset. Confidence: medium. Source basis: Rum density near 40% ABV.
Evidence status: reference-recorded. The source note is recorded; this does not certify every preparation or measurement condition.
Brand formulation, alcohol or sugar concentration, carbonation, and serving temperature can change the weight of a measured volume. Use this value as a documented reference rather than a producer specification.