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UK Fluid Ounces to US Teaspoons (imp fl oz to tsp) Converter

1 UK fluid ounce (imp fl oz) = 5.76456 US teaspoons (tsp). To convert UK fluid ounces to US teaspoons, multiply by 5.76456: 25 imp fl oz × 5.76456 = 144.114 tsp.

1 imp fl oz = 5.7645596351 tsp
Convert the other way: US Teaspoons to UK Fluid Ounces

Quick facts

How to convert UK fluid ounces to US teaspoons

  1. Take the value in UK fluid ounces.
  2. Multiply it by 5.76456 (the number of US teaspoons in one UK fluid ounce).
  3. Round the result to the precision you need.
tsp = imp fl oz × 5.76456

Worked example: 25 imp fl oz × 5.76456 = 144.114 tsp.

To convert US teaspoons back to UK fluid ounces, multiply by 0.173474, or divide by 5.76456.

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

UK Fluid Ounces to US Teaspoons conversion table

UK Fluid Ounces to US Teaspoons conversion table
UK Fluid Ounces [imp fl oz]US Teaspoons [tsp]
0.01 imp fl oz0.0576455964 tsp
0.1 imp fl oz0.5764559635 tsp
1 imp fl oz5.7645596351 tsp
2 imp fl oz11.5291192702 tsp
3 imp fl oz17.2936789053 tsp
5 imp fl oz28.8227981756 tsp
10 imp fl oz57.6455963511 tsp
20 imp fl oz115.2911927023 tsp
50 imp fl oz288.2279817557 tsp
100 imp fl oz576.4559635114 tsp
1000 imp fl oz5764.5596351137 tsp

imp fl oz to tsp chart from 1 to 100

US Teaspoons to UK Fluid Ounces conversion table

US Teaspoons to UK Fluid Ounces conversion table
US Teaspoons [tsp]UK Fluid Ounces [imp fl oz]
0.01 tsp0.0017347379 imp fl oz
0.1 tsp0.0173473789 imp fl oz
1 tsp0.1734737887 imp fl oz
2 tsp0.3469475774 imp fl oz
3 tsp0.5204213661 imp fl oz
5 tsp0.8673689434 imp fl oz
10 tsp1.7347378868 imp fl oz
20 tsp3.4694757737 imp fl oz
50 tsp8.6736894342 imp fl oz
100 tsp17.3473788684 imp fl oz
1000 tsp173.4737886843 imp fl oz

UK Fluid Ounces vs US Teaspoons

UK Fluid OunceUS Teaspoon
Symbolimp fl oztsp
Equals1 imp fl oz = 5.76456 tsp1 tsp = 0.173474 imp fl oz

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.

What is a US teaspoon?

A US customary cooking measure equal to 1/3 tablespoon. Used in US recipes for small quantities of ingredients.

Frequently asked questions

How many US teaspoons are in a UK fluid ounce?

There are 5.76456 US teaspoons in 1 UK fluid ounce (1 imp fl oz = 5.7645596351 tsp).

How many UK fluid ounces are in a US teaspoon?

There are 0.173474 UK fluid ounces in 1 US teaspoon (1 tsp = 0.1734737887 imp fl oz).

How do I convert UK fluid ounces to US teaspoons?

Multiply the number of UK fluid ounces by 5.76456. For example, 10 imp fl oz × 5.76456 = 57.6456 tsp. To convert back, multiply by 0.173474.

What is 10 imp fl oz in US teaspoons?

10 imp fl oz = 57.6456 tsp.

What is 100 imp fl oz in US teaspoons?

100 imp fl oz = 576.456 tsp.

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