A free ounces to cups converter for fluid ounces and, by ingredient, weight ounces.
Convert fluid ounces to cups, or weight ounces to cups for any of 40 ingredients.
Your numbers
Fluid ounces measure volume: 8 make a cup. For weight ounces, pick ounces and the ingredient, since each one weighs something different.
Your result
Fill in the fields above to see your result.
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Paste the code into any page: WordPress, Webflow, Squarespace, Ghost or plain HTML. It's free with the credit under it, which links back to navid.me.
This free ounces to cups converter turns fluid ounces into cups, and weight ounces into cups for any of 40 ingredients.
It handles the question behind most "ounces to cups" searches: whether the recipe means volume or weight.
I built it because a recipe's "8 oz" can mean a cup of milk or half a cup of honey, and the difference ruins a bake.
Here's the rule for each kind of ounce, a worked example, and a table.
TL;DRKey takeaways
What is an ounces to cups converter?
An ounces to cups converter turns ounces into US cups.
For fluid ounces it's 1 rule. For weight ounces it needs the ingredient, since each one weighs something different per cup.
Fluid ounces or weight ounces?
NIST Handbook 44 defines a cup as 8 fluid ounces. That's volume, and it works for water, milk and other liquids.
A weight ounce is 28.35 g. Turning it into cups goes through the ingredient's weight per cup, from USDA FoodData Central.
| Fluid ounces | Cups |
|---|---|
| 4 fl oz | ½ cup |
| 6 fl oz | ¾ cup |
| 8 fl oz | 1 cup |
| 12 fl oz | 1½ cups |
| 16 fl oz | 2 cups |
A worked example
Here's the example the calculator loads: 12 fluid ounces.
12 ÷ 8 = 1½ cups.
Mistakes to avoid
These are the slips that come up most.
- Using fluid ounces for flour, sugar or chocolate chips
- Reading a can's net weight as fluid ounces
- Measuring sticky ingredients like honey by volume without greasing the cup
Who is the ounces to cups converter for?
It's for cooks with US recipes, and these tools help around it.
- Cooking converter – for every kitchen unit at once
- Cups to grams converter – for 40 ingredients by weight
- Recipe scaler – for a full recipe, with grams
Know which ounce the recipe means, and the cups follow.
Plan your money with your AI
Take your numbers further in
Ounces to Cups Converter FAQs
Questions about the ounces to cups converter? Here's what to know.
An ounces to cups converter turns fluid or weight ounces into US cups.
8 fluid ounces.
1½ cups, if they're fluid ounces.
2 cups, if they're fluid ounces.
No, 8 oz of flour by weight is nearly 2 cups, since a cup of flour weighs about 125 g.
Pick the ingredient, since each one weighs a different amount per cup.
No, fluid ounces measure volume and ounces measure weight.
Yes, it's free with no sign-up.
It runs in your browser, and your numbers stay on your device.
I did.
I'm Navid Moazzez, and I made the ounces to cups converter as one of my free tools on navid.me.
More about me.
Navid Moazzez
AI business strategist & AI OS builder
Navid Moazzez helps creators and founders master AI and build their own AI Operating System (AI OS) to automate their business and life.
Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.
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