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.
Quick facts
- 1 imp fl oz = 5.76456 tsp
- 1 tsp = 0.173474 imp fl oz
- Formula: tsp = imp fl oz × 5.76456
- Quick estimate: multiply by about 5.8
How to convert UK fluid ounces to US teaspoons
- Take the value in UK fluid ounces.
- Multiply it by 5.76456 (the number of US teaspoons in one UK fluid ounce).
- Round the answer to a sensible number of decimal places.
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 [imp fl oz] | US Teaspoons [tsp] |
|---|---|
| 0.01 imp fl oz | 0.0576455964 tsp |
| 0.1 imp fl oz | 0.5764559635 tsp |
| 1 imp fl oz | 5.7645596351 tsp |
| 2 imp fl oz | 11.5291192702 tsp |
| 3 imp fl oz | 17.2936789053 tsp |
| 5 imp fl oz | 28.8227981756 tsp |
| 10 imp fl oz | 57.6455963511 tsp |
| 20 imp fl oz | 115.2911927023 tsp |
| 50 imp fl oz | 288.2279817557 tsp |
| 100 imp fl oz | 576.4559635114 tsp |
| 1000 imp fl oz | 5764.5596351137 tsp |
imp fl oz to tsp chart from 1 to 100
- 1 imp fl oz 5.76456 tsp
- 2 imp fl oz 11.5291 tsp
- 3 imp fl oz 17.2937 tsp
- 4 imp fl oz 23.0582 tsp
- 5 imp fl oz 28.8228 tsp
- 6 imp fl oz 34.5874 tsp
- 7 imp fl oz 40.3519 tsp
- 8 imp fl oz 46.1165 tsp
- 9 imp fl oz 51.881 tsp
- 10 imp fl oz 57.6456 tsp
- 11 imp fl oz 63.4102 tsp
- 12 imp fl oz 69.1747 tsp
- 13 imp fl oz 74.9393 tsp
- 14 imp fl oz 80.7038 tsp
- 15 imp fl oz 86.4684 tsp
- 16 imp fl oz 92.233 tsp
- 17 imp fl oz 97.9975 tsp
- 18 imp fl oz 103.762 tsp
- 19 imp fl oz 109.527 tsp
- 20 imp fl oz 115.291 tsp
- 25 imp fl oz 144.114 tsp
- 30 imp fl oz 172.937 tsp
- 35 imp fl oz 201.76 tsp
- 40 imp fl oz 230.582 tsp
- 45 imp fl oz 259.405 tsp
- 50 imp fl oz 288.228 tsp
- 55 imp fl oz 317.051 tsp
- 60 imp fl oz 345.874 tsp
- 65 imp fl oz 374.696 tsp
- 70 imp fl oz 403.519 tsp
- 75 imp fl oz 432.342 tsp
- 80 imp fl oz 461.165 tsp
- 85 imp fl oz 489.988 tsp
- 90 imp fl oz 518.81 tsp
- 95 imp fl oz 547.633 tsp
- 100 imp fl oz 576.456 tsp
US Teaspoons to UK Fluid Ounces conversion table
| US Teaspoons [tsp] | UK Fluid Ounces [imp fl oz] |
|---|---|
| 0.01 tsp | 0.0017347379 imp fl oz |
| 0.1 tsp | 0.0173473789 imp fl oz |
| 1 tsp | 0.1734737887 imp fl oz |
| 2 tsp | 0.3469475774 imp fl oz |
| 3 tsp | 0.5204213661 imp fl oz |
| 5 tsp | 0.8673689434 imp fl oz |
| 10 tsp | 1.7347378868 imp fl oz |
| 20 tsp | 3.4694757737 imp fl oz |
| 50 tsp | 8.6736894342 imp fl oz |
| 100 tsp | 17.3473788684 imp fl oz |
| 1000 tsp | 173.4737886843 imp fl oz |
UK Fluid Ounces vs US Teaspoons
| UK Fluid Ounce | US Teaspoon | |
|---|---|---|
| Symbol | imp fl oz | tsp |
| Equals | 1 imp fl oz = 5.76456 tsp | 1 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.
When You Need to Convert UK Fluid Ounces to US Teaspoons
UK fluid ounces are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes, while US teaspoons are used mainly in the United States. Because the two units come from different systems, Americans, Britons and Canadians often need it when buying from each other online, following each other's recipes or instructions, or filling in official forms.
How big is 1 imp fl oz compared with 1 tsp?
1 imp fl oz is 5.76456 times the size of 1 tsp, so the number gets bigger when you convert UK fluid ounces to US teaspoons.
UK Fluid Ounces to US Teaspoons without a calculator
- In your head: multiply by 6 (about 4.1% off). 1 imp fl oz × 6 ≈ 6 tsp.
- Closer estimate: multiply by 5.8 (within 0.61%).
- Fraction trick: multiply by 23, then divide by 4 (within 0.25%).
Real-world imp fl oz to tsp examples
| Example | UK Fluid Ounces | US Teaspoons |
|---|---|---|
| One imperial pint | 20 imp fl oz | 115.291 tsp |
| Half a pint | 10 imp fl oz | 57.6456 tsp |
| One imperial fluid ounce | 1 imp fl oz | 5.76456 tsp |
| A teaspoon of baking powder | 0.173474 imp fl oz | 1 tsp |
| Half a teaspoon of salt | 0.0867369 imp fl oz | 0.5 tsp |
| Two teaspoons of sugar | 0.346948 imp fl oz | 2 tsp |
How exact is the imp fl oz to tsp factor?
The factor is exact by definition, so any error comes only from rounding. Keep at least 4 significant figures for school work, and the full factor for anything legal or commercial.
Mistakes to avoid
- US and imperial (UK) measures share names but not sizes. Check which one a recipe, label or fuel figure uses before converting.
Background on UK fluid ounces and US teaspoons
A US teaspoon is about 4.93 ml, usually rounded to 5 ml on medicine spoons.
Related conversions
People who convert uk fluid ounces to us teaspoons often need us fluid ounces to us teaspoons, us teaspoons to milliliters, uk fluid ounces to milliliters and uk fluid ounces to us fluid ounces. The full volume converter lists every unit.
On pakmath.com, the percentage calculator is a useful next step; Adzita offers a free calorie calculator.
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?
Use tsp = imp fl oz × 5.76456. So 10 imp fl oz becomes 57.6456 tsp; for the reverse, 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.
How accurate is this UK fluid ounce to US teaspoon converter?
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.
What is an easy way to convert UK fluid ounces to US teaspoons?
In your head: multiply by 6 (about 4.1% off). 1 imp fl oz × 6 ≈ 6 tsp.
How many US teaspoons is 10 imp fl oz (half a pint)?
10 imp fl oz = 57.6456 tsp.
How many UK fluid ounces is two teaspoons of sugar (2 tsp)?
2 tsp = 0.346948 imp fl oz.
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