---
title: "US cups to Imperial fluid ounces — cup to imp fl oz converter"
description: "1 US cup = 8.326742 imperial fluid ounces. Convert US cups to imperial fluid ounces with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/cups-to-imperial-fl-oz/
site: "At One Place"
---

# US cups to imperial fluid ounces

**1 US cup in imperial fluid ounces: 1 cup = 8.326742 imp fl oz**

imp fl oz = cup × 8.326741846

To convert US cups to imperial fluid ounces, multiply by 8.326741846. The table below gives the values people look up most often, and the converter works for any number.

## US cups to imperial fluid ounces table

*Common US cup values converted to imperial fluid ounces.*

| US cups | Imperial fluid ounces |
| --- | --- |
| 1 cup | 8.326742 |
| 2 cup | 16.65348 |
| 3 cup | 24.98023 |
| 4 cup | 33.30697 |
| 5 cup | 41.63371 |
| 10 cup | 83.26742 |
| 15 cup | 124.9011 |
| 20 cup | 166.5348 |
| 25 cup | 208.1685 |
| 30 cup | 249.8023 |
| 40 cup | 333.0697 |
| 50 cup | 416.3371 |
| 75 cup | 624.5056 |
| 100 cup | 832.6742 |
| 250 cup | 2,081.6855 |
| 500 cup | 4,163.3709 |
| 1,000 cup | 8,326.7418 |

## How the conversion works

The relationship is imp fl oz = cup × 8.326741846. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

> US cup: US legal cup is 240 mL; the customary cup used here is 236.588 mL.

## Common questions

### How many imperial fluid ounces are in one US cup?

One US cup equals 8.326742 imperial fluid ounces. imp fl oz = cup × 8.326741846.

### How do you convert US cups to imperial fluid ounces?

Use imp fl oz = cup × 8.326741846. So 10 cup is 83.26742 imp fl oz.

### How many US cups are in one imperial fluid ounce?

One imperial fluid ounce equals 0.12009 US cups, which is the reverse of the conversion above.

### Is there more than one kind of US cup?

US legal cup is 240 mL; the customary cup used here is 236.588 mL.

## Related pages

- [Imperial fluid ounces to US cups](https://atoneplace.net/convert/imperial-fl-oz-to-cups/)
- [US cups to Liters](https://atoneplace.net/convert/cups-to-liters/)
- [US cups to Milliliters](https://atoneplace.net/convert/cups-to-ml/)
- [US cups to Cubic meters](https://atoneplace.net/convert/cups-to-cubic-meters/)
- [US cups to US gallons](https://atoneplace.net/convert/cups-to-gallons/)
- [US cups to US quarts](https://atoneplace.net/convert/cups-to-quarts/)
- [US cups to US pints](https://atoneplace.net/convert/cups-to-pints/)
- [US cups to US fluid ounces](https://atoneplace.net/convert/cups-to-fl-oz/)
- [US cups to Tablespoons](https://atoneplace.net/convert/cups-to-tablespoons/)
- [US cups to Teaspoons](https://atoneplace.net/convert/cups-to-teaspoons/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)