Cups to Ounces Converter — Cup to fl oz Calculator
Convert cups to fluid ounces (fl oz) and ounces to cups for US recipes, UK baking, and Canadian kitchens. 1 US cup = 8 fl oz — live results, charts, and cooking shortcuts.
Convert Cups to Fluid Ounces
US 1 cup equals 8 fluid ounces | Metric cup = 250 mL (Canada/UK recipes)
Cups to Ounces Conversion Chart
US cups with fluid ounces, tablespoons, and milliliters. Click a row to load.
| US Cups | US fl oz | tbsp | mL | Notes |
|---|
Recipe & Kitchen Measurements
Common liquid amounts in cups and fluid ounces for home cooking.
| Item | Cups | fl oz | mL |
|---|
US Cup vs Metric Cup (Canada & UK)
| Country | Cup used in recipes | Equals | Notes |
|---|---|---|---|
| United States | US customary cup | 8 US fl oz (236.6 mL) | Standard in American cookbooks & blogs |
| Canada | Metric cup (250 mL) | ≈ 8.45 US fl oz | Official metric; US recipes often imported |
| United Kingdom | Metric cup (250 mL) | ≈ 8.80 UK fl oz | Modern UK baking uses mL; older books may differ |
Batch Cups to Ounces
Convert multiple cup or ounce values — one per line or comma-separated.
Convert to All Volume Units
From cups or fl oz to tbsp, tsp, mL, pints, and quarts.
Volume Conversion Formulas
Exact factors used by this calculator.
How to Convert Cups to Ounces (USA, UK & Canada)
In American liquid measure, 1 cup = 8 fluid ounces (fl oz) exactly. Multiply cups by 8 to get fluid ounces: 2 cups × 8 = 16 fl oz.
Canada and the UK often use a 250 mL metric cup in recipes, which equals about 8.45 US fluid ounces — slightly more than a US cup. When following a US recipe in Canada, check whether the author means the US 236.6 mL cup or the 250 mL metric cup.
This page converts fluid ounces (volume), not avoirdupois ounces (weight). A cup of water is 8 fl oz and weighs roughly 8 oz, but a cup of flour or sugar weighs less on a kitchen scale.
Cups to fluid ounces chart
| Cups (US) | fl oz | tbsp | mL |
|---|---|---|---|
| ¼ cup | 2 fl oz | 4 tbsp | 59 mL |
| ⅓ cup | 2.67 fl oz | 5.33 tbsp | 79 mL |
| ½ cup | 4 fl oz | 8 tbsp | 118 mL |
| ⅔ cup | 5.33 fl oz | 10.67 tbsp | 158 mL |
| ¾ cup | 6 fl oz | 12 tbsp | 177 mL |
| 1 cup | 8 fl oz | 16 tbsp | 237 mL |
| 2 cups | 16 fl oz | 32 tbsp | 473 mL |
| 4 cups | 32 fl oz | 64 tbsp | 946 mL |
USA vs UK vs Canada — cup sizes
- USA: Recipes use the US customary cup (8 fl oz). Nutrition labels may use a 240 mL legal cup.
- Canada: Packaging is metric (mL, L). Home bakers may use 250 mL cups; American recipe sites use US cups.
- UK: Modern recipes list milliliters. The Imperial fluid ounce (28.4 mL) differs slightly from the US fl oz (29.6 mL).
Related volume converters
Cups to Ounces FAQ
How many ounces are in 1 cup?
1 US cup = 8 fluid ounces (fl oz) for liquid volume measure.
Is 1 cup always 8 oz?
yes — A single cup contains 8 fluid ounces. A metric cup (250 mL) used in Canada and the UK is about 8.45 US fl oz, slightly larger.
How do I convert ½ cup to ounces?
½ cup × 8 = 4 fluid ounces. Use the ½ cup quick button on this page for instant results.
What is the difference between fl oz and oz?
fl oz (fluid ounce) measures liquid volume. oz (ounce) on a scale measures weight. They match closely for water but not for other ingredients.
How many cups is 16 fl oz?
16 fl oz ÷ 8 = 2 cups — the same as one US pint of liquid.
Which cup does Canada use?
Canadian packaging uses milliliters and liters. Recipe cups are often 250 mL metric cups, while American imports reference the 236.6 mL US cup.
2026-06-05 10:05:56
Taylor Bennett