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Cubic Inches to UK Fluid Ounces (in³ to imp fl oz) Converter

1 cubic inch (in³) = 0.576744 UK fluid ounces (imp fl oz). To convert cubic inches to UK fluid ounces, multiply by 0.576744: 25 in³ × 0.576744 = 14.4186 imp fl oz.

1 in³ = 0.576744024 imp fl oz
Convert the other way: UK Fluid Ounces to Cubic Inches

Quick facts

How to convert cubic inches to UK fluid ounces

  1. Take the value in cubic inches.
  2. Multiply it by 0.576744 (the number of UK fluid ounces in one cubic inch).
  3. Round the result to the precision you need.
imp fl oz = in³ × 0.576744

Worked example: 25 in³ × 0.576744 = 14.4186 imp fl oz.

To convert UK fluid ounces back to cubic inches, multiply by 1.73387, or divide by 0.576744.

Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).

Cubic Inches to UK Fluid Ounces conversion table

Cubic Inches to UK Fluid Ounces conversion table
Cubic Inches [in³]UK Fluid Ounces [imp fl oz]
0.01 in³0.0057674402 imp fl oz
0.1 in³0.0576744024 imp fl oz
1 in³0.576744024 imp fl oz
2 in³1.153488048 imp fl oz
3 in³1.730232072 imp fl oz
5 in³2.8837201199 imp fl oz
10 in³5.7674402399 imp fl oz
20 in³11.5348804797 imp fl oz
50 in³28.8372011993 imp fl oz
100 in³57.6744023985 imp fl oz
1000 in³576.7440239854 imp fl oz

in³ to imp fl oz chart from 1 to 100

UK Fluid Ounces to Cubic Inches conversion table

UK Fluid Ounces to Cubic Inches conversion table
UK Fluid Ounces [imp fl oz]Cubic Inches [in³]
0.01 imp fl oz0.0173387145 in³
0.1 imp fl oz0.1733871455 in³
1 imp fl oz1.7338714549 in³
2 imp fl oz3.4677429099 in³
3 imp fl oz5.2016143648 in³
5 imp fl oz8.6693572747 in³
10 imp fl oz17.3387145495 in³
20 imp fl oz34.677429099 in³
50 imp fl oz86.6935727474 in³
100 imp fl oz173.3871454948 in³
1000 imp fl oz1733.8714549476 in³

Cubic Inches vs UK Fluid Ounces

Cubic InchUK Fluid Ounce
Symbolin³imp fl oz
Equals1 in³ = 0.576744 imp fl oz1 imp fl oz = 1.73387 in³

What is a cubic inch?

The volume of a cube with 1-inch sides. Used in the US for small mechanical parts and engine displacement.

What is a UK fluid ounce?

A UK imperial unit equal to 1/20 of an imperial pint (exactly 28.4130625 ml). Used in the UK and Canada on older recipes, drinks measures and some bottle labels.

Frequently asked questions

How many UK fluid ounces are in a cubic inch?

There are 0.576744 UK fluid ounces in 1 cubic inch (1 in³ = 0.576744024 imp fl oz).

How many cubic inches are in a UK fluid ounce?

There are 1.73387 cubic inches in 1 UK fluid ounce (1 imp fl oz = 1.7338714549 in³).

How do I convert cubic inches to UK fluid ounces?

Multiply the number of cubic inches by 0.576744. For example, 10 in³ × 0.576744 = 5.76744 imp fl oz. To convert back, multiply by 1.73387.

What is 10 in³ in UK fluid ounces?

10 in³ = 5.76744 imp fl oz.

What is 100 in³ in UK fluid ounces?

100 in³ = 57.6744 imp fl oz.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026