BeverageFluid Ounces to Grams

Light Rum Fluid Ounces 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 fluid ounce of light rum equals 28.18 grams.

  • Reference basis: 0.953 g/mL.
  • Example: 2 fl oz = 56.37 g.
  • This uses Light 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.

28.18 Grams

Switch
28.18 grams

With 1 fluid ounce of Light Rum, that equals 28.18 grams.

API and AI agent access

Light Rum Fluid Ounces to Grams. Material: light-rum.

Machine-readable identifiers

Conversion family
beverage
Source unit
fluid_ounce_us
Target unit
gram
Ingredient
light-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": "fluid_ounce_us",
  "to": "gram",
  "material": "light-rum"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "beverage",
    "value": 1,
    "from": "fluid_ounce_us",
    "to": "gram",
    "result": {
      "raw": 28.183573673062497,
      "display": "28.18"
    },
    "canonicalPath": "/beverage/fluid-ounces-to-grams/light-rum/"
  }
}
API, OpenAPI and WebMCP documentation

Explanation

US fluid ounces convert to grams by multiplying with the verified 28.18 g/fl oz density derived from the US fluid ounce (29.57 mL) and Light Rum's grams-per-milliliter ratio.

Use the calculator to translate customary pours into grams for menus or recipes.

Light rum is a clear or very lightly colored rum produced from sugarcane byproducts, typically molasses. It is known for its clean, mild profile and is widely used as a base spirit in cocktails where freshness, balance, and mixability are prioritized over heavy barrel influence. Practical use: Light rum is primarily used as a base spirit in refreshing and citrus-driven cocktails. It is essential in classics such as the Mojito and Daiquiri, and it plays a central role in tropical drinks like the Piña Colada. Its clean structure allows other ingredients—fresh citrus juice, sugar, herbs, and fruit—to remain clearly defined, making it a foundational spirit in both classic and modern mixology. Composition and sensory context: Light rum presents a clean, lightly sweet profile with subtle notes of sugarcane, vanilla, and faint tropical fruit. It is generally low in oak influence and perceived heaviness, offering a smooth, neutral backbone that integrates easily with citrus, mint, and fruit-forward ingredients. Compared to aged or dark rums, its character is restrained, emphasizing clarity and drinkability rather than depth from maturation.

Light 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 Light Rum: medium-confidence. Dataset note: Approx density for ~40% ABV ethanol-water at room temp (used across base spirits).

Common Conversion Values

Fluid OuncesGrams
1/2 14.09
1 28.18
2 56.37
4 112.73
8 225.47
12 338.2
16 450.94

Methodology

Light Rum density evidence

Light 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.