BeverageGrams to Milliliters

Rum (40% ABV) Grams to Milliliters

Updated: July 28, 2026 · Source: 40% ABV ethanol-water density approximation (Rum density near 40% ABV.)

Snapshot

1 gram of rum (40% abv) equals 1.05 milliliters. Conversion Encyclopedia keeps one fixed beverage basis on this page so the calculator, common values, and reverse page stay aligned.

Reference basis: 0.954 g/mL.
Example: 250 g = 262.05 mL.
This uses Rum (40% ABV) 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

1.05 Milliliters

Switch

1 gram

With 1 gram of Rum (40% ABV), you get just a small pour.

Machine access

Available to apps and AI agents

Rum (40% ABV) Grams to Milliliters can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The rum-40 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: gram
Target unit: milliliter
Ingredient: rum-40

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": "gram",
  "to": "milliliter",
  "material": "rum-40"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "beverage",
    "value": 1,
    "from": "gram",
    "to": "milliliter",
    "result": {
      "raw": 1.0482180293501049,
      "display": "1.05"
    },
    "canonicalPath": "/beverage/grams-to-milliliters/rum-40/"
  }
}

Full API documentation

Explanation

Convert grams of rum (40% abv) into milliliters using the same 0.954 g/mL density reference used on the reverse page.

That is especially useful for cocktail specs, batching sheets, and inventory work where rum (40% abv) starts from weight but service still uses poured measures. Rum (40% ABV) is treated here as 40% ABV, so stronger or lower-proof bottles can shift the practical density slightly.

Method & Density Basis

Density basis: 0.954 g/mL (anchored to US cup 236.588 mL and US fl oz 29.57 mL).
Applied factor: 1 Gram = 1.05 Milliliters.
Consistency rule: mirror pages invert the same per-liquid constants so forward and reverse directions remain aligned.
Source: 40% ABV ethanol-water density approximation (Rum density near 40% ABV.)

Common Conversion Values

Grams	Milliliters
25	26.21
50	52.41
75	78.62
100	104.82
150	157.23
200	209.64
250	262.05
500	524.11

Methodology

Rum (40% ABV) density evidence

Rum (40% ABV) uses 0.954 g/mL in this dataset, which is 4.6% lighter by volume than the 1 g/mL water reference. Evidence status: medium-confidence. Source basis: Rum density near 40% ABV.

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 milliliters is 1 gram of Rum (40% ABV)?

1 gram of Rum (40% ABV) is 1.05 milliliters using the density reference for this converter.

What density basis is used for Rum (40% ABV)?

It uses a density of 0.954 g/mL for Rum (40% ABV).

How many milliliters is 250 g of Rum (40% ABV)?

250 g of Rum (40% ABV) is 262.05 milliliters using the density reference for this converter.

How do I convert Rum (40% ABV) milliliters back to grams?

Use the mirror Milliliters To Grams page; for this ingredient, 1 mL = 0.95 g.