Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
Fluid Ounces to Cups Converter (US)
cups = US fl oz ÷ 8.
8 US fl oz make a cup. A 12 oz can is 1½ cups. UK fluid ounces are 28.4 mL, not 29.6 — close until you scale a catering recipe.
US fluid ounces
fl oz → cup
1 cup
8 fl oz → 1 cup. 16 fl oz → 2 cups. 2 fl oz shot → ¼ cup.
- You typed
- 8 fl oz
- One cup is
- 8 fl oz
- How it’s calculated
- cups = US fl oz ÷ 8.
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
US fluid ounces
The “US fluid ounces” value used in this tool’s formula. Adjust it to see results update live.
How this calculator works
8 US fl oz make a cup. A 12 oz can is 1½ cups. UK fluid ounces are 28.4 mL, not 29.6 — close until you scale a catering recipe. cups = US fl oz ÷ 8. Example: 8 fl oz → 1 cup. 16 fl oz → 2 cups. 2 fl oz shot → ¼ cup.
cups = US fl oz ÷ 8.
Example: 8 fl oz → 1 cup. 16 fl oz → 2 cups. 2 fl oz shot → ¼ cup.
When to use this Fluid Ounces to Cups
Common use cases
- 8 US fl oz make a cup. A 12 oz can is 1½ cups. UK fluid ounces are 28.4 mL, not 29.6 — close until you scale a catering recipe.
- Sanity-check with this case: 8 fl oz → 1 cup. 16 fl oz → 2 cups. 2 fl oz shot → ¼ cup.
- The relationship is: cups = US fl oz ÷ 8.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: US fluid ounces
- cups = US fl oz ÷ 8.
- Example on the page: 8 fl oz → 1 cup. 16 fl oz → 2 cups. 2 fl oz shot → ¼ cup.
How to Convert Fluid Ounces to Cups Step-by-Step
- 1Enter US fluid ounces. Use the values you have, not a catalog average, unless that is all you know.
- 2cups = US fl oz ÷ 8.
- 3Worked case: 8 fl oz → 1 cup. 16 fl oz → 2 cups. 2 fl oz shot → ¼ cup.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
cups = US fl oz ÷ 8.
8 fl oz → 1 cup. 16 fl oz → 2 cups. 2 fl oz shot → ¼ cup.
Example: set US fluid ounces = 8, then read the result.
Variable definitions
- value
US fluid ounces
The “US fluid ounces” field. Default 8; typical range 0–500.
- The conversion (cups = US fl oz ÷ 8.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
Fluid ounces are volume. 8 fl oz of honey is not 8 oz on a postal scale.
Related calculators
Unit Converters
- Cups to MillilitersUS customary cup is 240 mL in nutrition labels and 236.6 mL in the true fluid-cup (8 fl oz). This page uses the 8 fl oz cup (236.6 mL). A “metric cup” in Australia is 250 mL. If the cake falls, check which cup the author owned.
- Fluid Ounces to MillilitersUS fl oz × 29.57 = mL. An 8 oz cup of coffee is 237 mL. UK fl oz is 28.4 mL. Bottle labels that say 12 fl oz are 355 mL — the beer can you already know.
- Milliliters to Fluid OuncesBottles, baby formula, and espresso. Divide mL by 29.5735 for US fl oz. A 500 mL water bottle is 16.9 fl oz, which is why the label says both. UK fl oz is different; this is US.
- Ounces to GramsUS recipes still say 8 oz of chocolate. European scales only know grams. Multiply ounces by 28.35. If the recipe meant a fluid cup, you are in the wrong aisle — that is volume.
- Pounds to OuncesSixteen avoirdupois ounces in a pound. Shipping labels and baby weight still mix them: 7 lb 8 oz is 120 oz total. Multiply pounds by 16. No troy, no fluid ounces.
- Brown Sugar Cups to GramsPacked light or dark brown sugar is about 220 g per US cup. “Packed” means you pressed it. A loose scoop can miss 30 g and flatten cookies. Light and dark weigh nearly the same; molasses is the flavor, not the scale.
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Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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