BeverageFluid Ounces to Grams

Tonic water Fluid Ounces to Grams

Updated: July 28, 2026 · Source: Beverage density reference (Tonic water density near room temperature.)

Snapshot

1 fluid ounce of tonic water equals 29.87 grams. Conversion Encyclopedia keeps one fixed beverage basis on this page so the calculator, common values, and reverse page stay aligned.

Reference basis: 1.01 g/mL.
Example: 2 fl oz = 59.74 g.
Source basis: Beverage density reference.

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

Interactive conversion

Converter Calculator

29.87 Grams

Switch

29.87 grams

With 1 fluid ounce of Tonic water, that equals 29.87 grams.

Machine access

Available to apps and AI agents

Tonic water Fluid Ounces to Grams can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The tonic-water 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: tonic-water

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": "tonic-water"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "beverage",
    "value": 1,
    "from": "fluid_ounce_us",
    "to": "gram",
    "result": {
      "raw": 29.869264858125,
      "display": "29.87"
    },
    "canonicalPath": "/beverage/fluid-ounces-to-grams/tonic-water/"
  }
}

Full API documentation

Explanation

Convert US fluid ounces of tonic water to grams using a density reference of 1.01 g/mL. On that basis, 1 US fluid ounce works out to 29.87 grams for this ingredient.

That is useful for mixer prep, dilution planning, and packaged-drink workflows where tonic water volume and weight need to stay comparable. Tonic water can still vary a little with sugar level or carbonation, so the converter keeps one reference value for consistency.

Method & Density Basis

Density basis: 1.01 g/mL (anchored to US cup 236.588 mL and US fl oz 29.57 mL).
Applied factor: 1 Fluid Ounce = 29.87 Grams.
Consistency rule: mirror pages invert the same per-liquid constants so forward and reverse directions remain aligned.
Source: Beverage density reference (Tonic water density near room temperature.)

Common Conversion Values

Fluid Ounces	Grams
0.5	14.93
1	29.87
2	59.74
4	119.48
8	238.95
12	358.43
16	477.91

Methodology

Tonic water density evidence

Tonic water uses 1.01 g/mL in this dataset, which is 1.0% heavier by volume than the 1 g/mL water reference. Evidence status: medium-confidence. Source basis: Tonic water density near room temperature.

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 Tonic water?

1 fluid ounce of Tonic water is 29.87 grams using the density reference for this converter.

What fluid-ounce standard is applied for Tonic water?

It uses the US fluid ounce (29.5735 mL) with a density of 1.01 g/mL.

How many grams are in 2 fl oz of Tonic water?

2 fluid ounces of Tonic water are 59.74 grams using the density reference for this converter.

How do I convert Tonic water grams back to fluid ounces?

Use the mirror Grams To Fluid Ounces page; for this ingredient, 1 g = 0.03 fl oz.