BeverageFluid Ounces to Grams

White 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).)

Methodology·How We Verify

Snapshot

1 fluid ounce of white rum equals 28.18 grams. Conversion Encyclopedia keeps one fixed beverage basis on this page so the calculator, common values, and reverse page stay aligned.

Reference basis: 0.953 g/mL.
Example: 2 fl oz = 56.37 g.
This uses White Rum at 40% ABV (not pure ethanol), so density differs from alcohol-only references.

Use the interactive calculator below for custom values and the common-value table for quick checks.

Interactive conversion

Converter Calculator

28.18 Grams

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28.18 grams

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

Machine access

Available to apps and AI agents

White Rum Fluid Ounces to Grams can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The white-rum identifier tells the conversion engine which ingredient record to use for the same calculation shown by the calculator.

Machine-readable identifiers

Conversion family: beverage
Source unit: fluid_ounce_us
Target unit: gram
Ingredient: white-rum

The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "beverage",
  "value": 1,
  "from": "fluid_ounce_us",
  "to": "gram",
  "material": "white-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/white-rum/"
  }
}

Full API documentation

Explanation

Convert US fluid ounces of white rum to grams using a density reference of 0.953 g/mL. On that basis, 1 US fluid ounce works out to 28.18 grams for this ingredient.

That is especially useful for cocktail specs, bottle-fill checks, and bar batching where white rum starts as a measured pour but the target is weight. White Rum is treated here as 40% ABV, so stronger or lower-proof bottles can shift the practical density slightly.

Method & Density Basis

Density basis: 0.953 g/mL (anchored to US cup 236.588 mL and US fl oz 29.57 mL).
Applied factor: 1 Fluid Ounce = 28.18 Grams.
Consistency rule: mirror pages invert the same per-liquid constants so forward and reverse directions remain aligned.
Source: 40% ABV ethanol-water density approximation (Approx density for ~40% ABV ethanol-water at room temp (used across base spirits).)

Common Conversion Values

Fluid Ounces	Grams
0.5	14.09
1	28.18
2	56.37
4	112.73
8	225.47
12	338.2
16	450.94

Methodology

White Rum density evidence

White Rum uses 0.953 g/mL in this dataset, which is 4.7% lighter by volume than the 1 g/mL water reference. Evidence status: medium-confidence. Source basis: Approx density for ~40% ABV ethanol-water at room temp (used across base spirits).

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.

Questions & answers

Frequently Asked Questions

How many grams are in 1 fluid ounce of White Rum?

1 fluid ounce of White Rum is 28.18 grams using the density reference for this converter.

What fluid-ounce standard is applied for White Rum?

It uses the US fluid ounce (29.5735 mL) with a density of 0.953 g/mL.

How many grams are in 2 fl oz of White Rum?

2 fluid ounces of White Rum are 56.37 grams using the density reference for this converter.

How do I convert White Rum grams back to fluid ounces?

Use the mirror Grams To Fluid Ounces page; for this ingredient, 1 g = 0.04 fl oz.