Cups (US) to Fluid Ounces (US) Converter
Convert Cups (US) to Fluid Ounces (US) with the exact conversion factor, a worked example and a quick-reference table. Runs entirely in your browser.
This converter turns Cups (US) into Fluid Ounces (US) instantly using the standard definition of both units. It includes the formula, a worked example, and a quick table for common amounts, and it works for any value you type — including decimals and negatives where they make sense.
Quick reference — Cups (US) to Fluid Ounces (US)
How to use this calculator
- Enter the value in Cups (US) in the input box.
- Read the result in Fluid Ounces (US) — it updates as you type.
- Use the Swap button to convert in the opposite direction.
- Check the quick-reference table for common Cups (US) amounts.
The formula
Fluid Ounces (US) = Cups (US) × 8
Worked example
1 cup = 8 fl oz — in full, 1 Cups (US) converts to 8 Fluid Ounces (US). Recipes and kitchen measuring are the everyday jobs for this conversion.
Frequently Asked Questions
How do I convert Cups (US) to Fluid Ounces (US)?
Multiply the value in Cups (US) by 8. For example, 1 Cups (US) × 8 = 8 Fluid Ounces (US). To go the other way, divide by 8 instead — or press Swap in the converter above.
How many Fluid Ounces (US) are in one Cup (US)?
One Cup (US) equals 8 Fluid Ounces (US). Scaling up, 10 Cups (US) = 80 Fluid Ounces (US) and 100 Cups (US) = 800 Fluid Ounces (US). The converter uses the full-precision factor, so typed values are more precise than the rounded figure quoted here.
Which is bigger, a Cup (US) or a Fluid Ounce (US)?
A Cup (US) is bigger. One Cup (US) equals 8 Fluid Ounces (US), while one Fluid Ounce (US) is only 0.125 Cups (US). So a measurement that looks larger in Fluid Ounces (US) is reflecting the scale difference, not an error.
What is 1 Cups (US) in Fluid Ounces (US)?
1 Cups (US) is 8 Fluid Ounces (US). The math is 1 × 8 = 8. Try any other amount in the converter above and the result updates as you type.