BeverageFluid Ounces to Grams

1 Fluid Ounce Water in Grams

Updated: July 28, 2026 · Source: Water reference basis: 1 g/mL at kitchen temperature (US fluid ounce volume: 29.5735 mL.)

Methodology·How We Verify

Snapshot

1 fluid ounce of water equals 29.57 grams.

Reference basis: 1 g/mL.
Example: For 8 US fluid ounces of water, the result is about 236.59 grams with the same basis.
Source basis: Water reference basis: 1 g/mL at kitchen temperature.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

29.57 Grams

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29.57 grams

With 1 fluid ounce of Water, that equals 29.57 grams.

API and AI agent access

1 Fluid Ounce Water in Grams. Material: water.

Machine-readable identifiers

Conversion family: beverage
Source unit: fluid_ounce_us
Target unit: gram
Ingredient: water

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": "water"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "beverage",
    "value": 1,
    "from": "fluid_ounce_us",
    "to": "gram",
    "result": {
      "raw": 29.5735295625,
      "display": "29.57"
    },
    "canonicalPath": "/beverage/fluid-ounces-to-grams/water/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

This is the reverse water-only side of the same conversion basis. It turns US fluid ounces of water into grams using the standard kitchen approximation that water is about 1 gram per milliliter.

That makes it useful for questions like how many grams in a fluid ounce of water, shot-style water pours, and bottle-style references where the starting point is volume but the target is grams. The mirror page reverses the same water basis to estimate fluid ounces from grams.

Common Conversion Values

Fluid Ounces	Grams
1	29.57
3.38	99.96
8	236.59
12	354.88
16	473.18
33.81	999.88

Methodology

Water density evidence

Water uses 1 g/mL in this dataset. Confidence: high. Source basis: Typical density of pure water at room temperature.

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.

Questions & answers

Frequently Asked Questions

Is this fluid ounces or weight ounces?

It is US fluid ounces, which measure volume. This page does not use weight ounces.

Why is this not a universal fluid-ounces-to-grams rule?

Because grams depend on liquid density. This shortcut is reliable for water, but other liquids need their own density basis.