CookingFluid Ounces to Grams

Butter (Unsalted) Fluid Ounces to Grams

Updated: March 1, 2026

Snapshot

1 fluid ounce of butter (unsalted) equals 28.38 grams.

  • Reference basis: 28.38 g per 1 US fluid ounce.
  • Example: 2 fl oz = 56.75 g.

Interactive conversion

Converter Calculator

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

28.38 Grams

Switch
28.38 grams

With 1 fluid ounce of Butter (Unsalted), that equals 28.38 grams.

API and AI agent access

Butter (Unsalted) Fluid Ounces to Grams. Material: butter-unsalted.

Machine-readable identifiers

Conversion family
cooking
Source unit
fluid_ounce_us
Target unit
gram
Ingredient
butter-unsalted

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": "cooking",
  "value": 1,
  "from": "fluid_ounce_us",
  "to": "gram",
  "material": "butter-unsalted"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "cooking",
    "value": 1,
    "from": "fluid_ounce_us",
    "to": "gram",
    "result": {
      "raw": 28.375,
      "display": "28.38"
    },
    "canonicalPath": "/cooking/fluid-ounces-to-grams/butter-unsalted/"
  }
}
API, OpenAPI and WebMCP documentation

Explanation

Calculation basis: grams per US cup divided by 8 US fluid ounces per cup.

Butter (Unsalted) uses a recorded reference of 227 grams per US cup in this dataset. Confidence: high. Source basis: USDA (1 cup butter ≈ 227g)

Evidence status: reference-recorded. The source note is recorded; this does not certify every preparation or measurement condition. Temperature and physical state affect pourability and volume, so softened, melted, and solid forms should not be treated as interchangeable.

Common Conversion Values

Fluid OuncesGrams
1/2 14.19
1 28.38
2 56.75
4 113.5
8 227
12 340.5
16 454

Questions & answers

Frequently Asked Questions

Is this based on an ingredient-specific density estimate?

Yes. The page reduces the same 227 g-per-cup basis to a per-fluid-ounce estimate for Butter (Unsalted).

Does temperature or physical state change the result for Butter (Unsalted)?

Butter (Unsalted) keeps one liquid-state reference basis here, but the result assumes the ingredient is melted or fully liquid when measured. Solid pieces, scooped chunks, or semi-solid fills do not behave the same way in a cup.