BeverageCups to Grams

Dark Rum Cups to Grams

Updated: July 28, 2026 · Source: 40% ABV ethanol-water density approximation (Approx density for ~40% ABV ethanol-water at room temp (used across base spirits).)

Snapshot

1 cup of dark rum equals 225.47 grams.

  • Reference basis: 0.953 g/mL.
  • Example: 2 cups = 450.94 g.
  • This uses Dark Rum 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.

225.47 Grams

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225.47 grams

With 1 cup of Dark Rum, that equals 225.47 grams.

API and AI agent access

Dark Rum Cups to Grams. Material: dark-rum.

Machine-readable identifiers

Conversion family
beverage
Source unit
cup_us
Target unit
gram
Ingredient
dark-rum

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": "dark-rum"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "beverage",
    "value": 1,
    "from": "cup_us",
    "to": "gram",
    "result": {
      "raw": 225.46836399999998,
      "display": "225.47"
    },
    "canonicalPath": "/beverage/cups-to-grams/dark-rum/"
  }
}
API, OpenAPI and WebMCP documentation

Explanation

US cups convert to grams by multiplying with the verified 225.5 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.

Dark rum is a style of rum typically produced from molasses and aged in oak barrels, or colored and enriched through extended aging and blending techniques. It is characterized by deeper color, fuller body, and more pronounced caramelized and oak-driven flavors compared to light or white rum styles. Practical use: Dark rum is commonly used as a base spirit in richness-driven and spirit-forward mixed drinks where body, warmth, and depth are required. It is foundational in tropical and tiki-style builds, often used alone or in blends to provide density and caramelized backbone. It also serves as the classic partner for ginger-based mixers in long drinks, where its molasses depth anchors spice and carbonation. Beyond cocktails, dark rum is widely used in baking, sauces, and desserts to add richness and aromatic complexity. Composition and sensory context: Dark rum presents a rich and robust profile built around caramelized sugar, molasses, and toasted oak notes. Secondary aromas often include dried fruit such as raisin and prune, along with baking spices like cinnamon and clove. Sweetness is perceived as high due to molasses-derived aromatics rather than added sugar, texture is round and weighty, and the finish is warm and lingering with subtle toasty and lightly smoky nuances.

Dark Rum uses 0.953 g/mL in this dataset. That makes it 4.7% lighter by volume than water at the 1 g/mL reference. On the same basis, one US cup is about 225.5 g and one US fluid ounce is about 28.18 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 Dark Rum: medium-confidence. Dataset note: Approx density for ~40% ABV ethanol-water at room temp (used across base spirits).

Common Conversion Values

CupsGrams
1/4 56.37
1/3 75.15
1/2 112.73
3/4 169.1
1 225.47
1 1/2 338.2
2 450.94
3 676.41
4 901.87

Methodology

Dark Rum density evidence

Dark Rum uses 0.953 g/mL in this dataset. Confidence: medium. Source basis: Approx density for ~40% ABV ethanol-water at room temp (used across base spirits).

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.