BeverageCups to Grams

Guinness Stout Cups to Grams

Updated: July 28, 2026 · Source: Beer density approximation (Beer density approximation near room temperature.)

Snapshot

1 cup of guinness stout equals 238.95 grams.

  • Reference basis: 1.01 g/mL.
  • Example: 2 cups = 477.91 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.

238.95 Grams

Switch
238.95 grams

With 1 cup of Guinness Stout, that equals 238.95 grams.

API and AI agent access

Guinness Stout Cups to Grams. Material: guinness-stout.

Machine-readable identifiers

Conversion family
beverage
Source unit
cup_us
Target unit
gram
Ingredient
guinness-stout

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "beverage",
  "value": 1,
  "from": "cup_us",
  "to": "gram",
  "material": "guinness-stout"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "beverage",
    "value": 1,
    "from": "cup_us",
    "to": "gram",
    "result": {
      "raw": 238.95388,
      "display": "238.95"
    },
    "canonicalPath": "/beverage/cups-to-grams/guinness-stout/"
  }
}
API, OpenAPI and WebMCP documentation

Explanation

US cups convert to grams by multiplying with the verified 239 g/cup density derived from the US cup (236.588 mL) definition and the liquid’s grams-per-milliliter ratio.

Use the calculator to translate recipe cups into grams while keeping the same density that powers the milliliter and fluid ounce families.

Guinness Stout 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 Stout: medium-confidence. Dataset note: Beer density approximation near room temperature.

Common Conversion Values

CupsGrams
1/4 59.74
1/3 79.64
1/2 119.48
3/4 179.22
1 238.95
1 1/2 358.43
2 477.91
3 716.86
4 955.82

Methodology

Guinness Stout density evidence

Guinness Stout 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.