K

US Fluid Ounce to Imperial Fluid Ounce Converter

VerifiedLast reviewed: Jan 1, 2026Fact checked by: Adil BaltiFactor: 1 fl oz = 1.040843 fl oz (imp)Source: BIPM
Share:

What is US Fluid Ounce to Imperial Fluid Ounce Converter

This US fluid ounce to imperial fluid ounce converter changes volume between US fluid ounces (fl oz) and imperial fluid ounces (imp fl oz). It applies the conversion factor where 1 US fluid ounce equals about 1.04084 imperial fluid ounces.

Definitions of US Fluid Ounce and Imperial Fluid Ounce

What is US Fluid Ounce?

A US fluid ounce is a unit of liquid volume equal to 1/128th of a US gallon. It is commonly used for beverages, cosmetics, and liquid medication dosages.

What is Imperial Fluid Ounce?

An imperial fluid ounce is a unit of volume in the imperial system equal to 1/20th of an imperial pint. It is approximately equivalent to 28.41 milliliters.

US Fluid Ounce to Imperial Fluid Ounce Formula

fl oz (Imp)=fl oz×1.040843\text{fl\ oz\ (Imp)} = \text{fl\ oz} \times 1.040843

Conversion explanation: Multiply the value in US Fluid Ounce by 1.040842711 to get the equivalent value in Imperial Fluid Ounce.

How to Convert US Fluid Ounce to Imperial Fluid Ounce

To convert a value from us fluid ounces to imperial fluid ounces, multiply the value by the conversion multiplier:

Imperial Fluid Ounces = US Fluid Ounces × 1.040842711

Step-by-Step Example

Converting a 5 us fluid ounce volume into imperial fluid ounce:

  • Identify the multiplier factor: 1.040842711.
  • Multiply 5 by the factor: 5 × 1.040842711 = 5.2042135549.
  • Result: 5 us fluid ounces is equal to 5.2042135549 imperial fluid ounces.

US Fluid Ounce to Imperial Fluid Ounce Conversion Table

US Fluid Ounce [fl oz]Imperial Fluid Ounce [fl oz (imp)]
0.01 fl oz0.0104084271 fl oz (imp)
0.1 fl oz0.1040842711 fl oz (imp)
1 fl oz1.040842711 fl oz (imp)
2 fl oz2.081685422 fl oz (imp)
3 fl oz3.122528133 fl oz (imp)
4 fl oz4.163370844 fl oz (imp)
5 fl oz5.2042135549 fl oz (imp)
6 fl oz6.2450562659 fl oz (imp)
7 fl oz7.2858989769 fl oz (imp)
8 fl oz8.3267416879 fl oz (imp)
9 fl oz9.3675843989 fl oz (imp)
10 fl oz10.4084271099 fl oz (imp)
20 fl oz20.8168542198 fl oz (imp)
30 fl oz31.2252813297 fl oz (imp)
50 fl oz52.0421355495 fl oz (imp)
100 fl oz104.0842710989 fl oz (imp)
500 fl oz520.4213554945 fl oz (imp)
1000 fl oz1040.842710989 fl oz (imp)
Rate This US Fluid Ounce to Imperial Fluid Ounce Converter:
5 /5 (79 votes)

About Unit Converters

At Calculators.is our sole focus is to provide 100% accurate, fast, comprehensive, convenient, easy-to-use Free Online Unit Converters to everyone to use without spending a single $ on any online converters.

All the converters on our website are designed and developed by our own team, and each one is put through strict, comprehensive testing before being made live on our website.

About, Founder and Calculators.is Team.

Add Calculators.is as a preferred source on Google