Caster Sugar Ounces (Weight) to Cups
Snapshot
1 ounce of caster sugar equals 0.15 cups.
- Reference basis: 190 g per 1 US cup.
- Example: 8 oz = 1.19 cups.
Interactive conversion
Converter Calculator
Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.
0.15 Cups
SwitchAPI and AI agent access
Caster Sugar Ounces (Weight) to Cups. Material: caster-sugar.
Machine-readable identifiers
- Conversion family
cooking- Source unit
ounce_weight- Target unit
cup_us- Ingredient
caster-sugar
Use these identifiers in the API request. Sources and model limits also apply to software clients.
Example API request and response
POST /api/v1/convertRequest
{
"family": "cooking",
"value": 1,
"from": "ounce_weight",
"to": "cup_us",
"material": "caster-sugar"
}Essential response
{
"ok": true,
"conversion": {
"family": "cooking",
"value": 1,
"from": "ounce_weight",
"to": "cup_us",
"result": {
"raw": 0.1492078947368421,
"display": "0.15"
},
"canonicalPath": "/cooking/ounces-to-cups/caster-sugar/"
}
}Explanation
Calculation basis: 28.3495 grams per avoirdupois ounce divided by grams per US cup.
Caster Sugar uses a recorded reference of 190 grams per US cup in this dataset. Confidence: high. Source basis: King Arthur Ingredient Weight Chart (Baker's Special Sugar / castor sugar: 1 cup = 190g)
Evidence status: reference-recorded. The source note is recorded; this does not certify every preparation or measurement condition. Crystal size, packing, moisture, and syrup concentration can change how much mass occupies the same kitchen volume.
Common Conversion Values
| Ounces | Cups |
|---|---|
| 1/2 | 0.07 |
| 1 | 0.15 |
| 2 | 0.3 |
| 4 | 0.6 |
| 8 | 1.19 |
| 16 | 2.39 |
Questions & answers
Frequently Asked Questions
Does crystal size or packing change the result for Caster Sugar?
Caster Sugar keeps one reference basis here, but crystal size, moisture, and caking can shift how much fits in a spoon or cup. That matters more with sugars and sweeteners than with a purely liquid measure.