CookingCups to Ounces Weight

Butter (Unsalted) Cups to Ounces (Weight)

Updated: March 1, 2026

Snapshot

1 cup of butter (unsalted) equals 8.01 ounces.

  • Reference basis: 227 g per 1 US cup.
  • Example: 2 cups = 16.01 oz.

Interactive conversion

Converter Calculator

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

8.01 Ounces

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API and AI agent access

Butter (Unsalted) Cups to Ounces (Weight). Material: butter-unsalted.

Machine-readable identifiers

Conversion family
cooking
Source unit
cup_us
Target unit
ounce_weight
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": "cup_us",
  "to": "ounce_weight",
  "material": "butter-unsalted"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "cooking",
    "value": 1,
    "from": "cup_us",
    "to": "ounce_weight",
    "result": {
      "raw": 8.00719589410748,
      "display": "8.01"
    },
    "canonicalPath": "/cooking/cups-to-ounces-weight/butter-unsalted/"
  }
}
API, OpenAPI and WebMCP documentation

Explanation

Calculation basis: grams per US cup divided by 28.3495 grams per avoirdupois ounce.

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

CupsOunces
1/4 2
1/3 2.67
1/2 4
1 8.01
1 1/2 12.01
2 16.01
3 24.02

Questions & answers

Frequently Asked Questions

Is this weight ounces or fluid ounces?

It is weight ounces. This page converts cup volume into ingredient mass, not fluid ounces.

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.