---
title: "Imperial fluid ounces to US cups — imp fl oz to cup converter"
description: "1 imperial fluid ounce = 0.12009 US cups. Convert imperial fluid ounces to US cups with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/imperial-fl-oz-to-cups/
site: "At One Place"
---

# Imperial fluid ounces to US cups

**1 imperial fluid ounce in US cups: 1 imp fl oz = 0.12009 cup**

cup = imp fl oz × 0.1200949926

To convert imperial fluid ounces to US cups, multiply by 0.1200949926. The table below gives the values people look up most often, and the converter works for any number.

## Imperial fluid ounces to US cups table

*Common imperial fluid ounce values converted to US cups.*

| Imperial fluid ounces | US cups |
| --- | --- |
| 1 imp fl oz | 0.12009 |
| 2 imp fl oz | 0.24019 |
| 3 imp fl oz | 0.36028 |
| 4 imp fl oz | 0.48038 |
| 5 imp fl oz | 0.60047 |
| 10 imp fl oz | 1.20095 |
| 15 imp fl oz | 1.801425 |
| 20 imp fl oz | 2.4019 |
| 25 imp fl oz | 3.002375 |
| 30 imp fl oz | 3.60285 |
| 40 imp fl oz | 4.8038 |
| 50 imp fl oz | 6.00475 |
| 75 imp fl oz | 9.007124 |
| 100 imp fl oz | 12.0095 |
| 250 imp fl oz | 30.02375 |
| 500 imp fl oz | 60.0475 |
| 1,000 imp fl oz | 120.095 |

## How the conversion works

The relationship is cup = imp fl oz × 0.1200949926. 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 US cups are in one imperial fluid ounce?

One imperial fluid ounce equals 0.12009 US cups. cup = imp fl oz × 0.1200949926.

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

Use cup = imp fl oz × 0.1200949926. So 10 imp fl oz is 1.20095 cup.

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

One US cup equals 8.326742 imperial fluid ounces, 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

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