Guinness Fluid Ounces to Grams
Snapshot
1 fluid ounce of guinness equals 29.87 grams.
- Reference basis: 1.01 g/mL.
- Example: 2 fl oz = 59.74 g.
- Source basis: Beer density approximation.
Interactive conversion
Converter Calculator
Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.
29.87 Grams
SwitchWith 1 fluid ounce of Guinness, that equals 29.87 grams.
API and AI agent access
Guinness Fluid Ounces to Grams. Material: guinness.
Machine-readable identifiers
- Conversion family
beverage- Source unit
fluid_ounce_us- Target unit
gram- Ingredient
guinness
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": "guinness"
}Essential response
{
"ok": true,
"conversion": {
"family": "beverage",
"value": 1,
"from": "fluid_ounce_us",
"to": "gram",
"result": {
"raw": 29.869264858125,
"display": "29.87"
},
"canonicalPath": "/beverage/fluid-ounces-to-grams/guinness/"
}
}Explanation
US fluid ounces convert to grams by multiplying with the verified 29.87 g/fl oz density derived from the US fluid ounce (29.57 mL) and Guinness's grams-per-milliliter ratio.
Use the calculator to translate customary pours into grams for menus or recipes.
Guinness uses 1.01 g/mL in this dataset. That makes it 1% heavier by volume than water at the 1 g/mL reference. On the same basis, one US cup is about 239 g and one US fluid ounce is about 29.87 g.
Carbonation and foam can distort a direct volume reading, so measure the settled liquid when a weight estimate needs to be repeatable. These figures describe a reference conversion, not a guarantee for every brand, recipe, serving temperature, or production batch.
Evidence status for Guinness: medium-confidence. Dataset note: Beer density approximation near room temperature.
Common Conversion Values
| Fluid Ounces | Grams |
|---|---|
| 1/2 | 14.93 |
| 1 | 29.87 |
| 2 | 59.74 |
| 4 | 119.48 |
| 8 | 238.95 |
| 12 | 358.43 |
| 16 | 477.91 |
Methodology
Guinness density evidence
Guinness uses 1.01 g/mL in this dataset. Confidence: medium. Source basis: Beer density approximation near room temperature.
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.