A teaspoon (US) is a unit of volume measurement commonly used in American kitchens and food labeling. It is part of the US customary system and is typically abbreviated as "tsp." One US teaspoon is defined as exactly 4.92892 milliliters. It's also equivalent to one-third of a US tablespoon and one forty-eighth of a US cup.
This unit is frequently seen in recipes for small quantities of ingredients like salt, baking powder, or vanilla extract. It's also a common part of household measuring spoon sets, which usually include ¼, ½, and 1 teaspoon sizes.
Uses: The US teaspoon is widely used in both culinary and non-culinary contexts across the United States. The US teaspoon is a commonly used unit in everyday cooking, especially in baking, where accurate measurements of ingredients like spices, extracts, and baking powder are key to getting consistent results. Outside the kitchen, this small but essential unit is frequently used in healthcare as a standard measure for liquid medications, particularly when dosing for children. While medical professionals usually recommend milliliters for precision, many over-the-counter medicines in the US still refer to teaspoons as a practical reference.
The imperial fluid ounce is a unit of volume from the imperial measurement system, traditionally used in the United Kingdom and other Commonwealth countries. One imperial fluid ounce is equal to 28.4131 milliliters, which makes it slightly larger than the US fluid ounce (approximately 29.57 mL in the US system). It's commonly abbreviated as fl oz and was widely used for measuring liquids in recipes, packaging, and day-to-day household tasks.
Uses: The imperial fluid ounce was once a standard unit in British kitchens, used to measure ingredients such as milk, oil, and other cooking liquids. While most modern recipes in the UK now use milliliters or grams, many older or traditional recipes still list quantities in fluid ounces. This makes the unit especially relevant for those cooking from classic British cookbooks or following long-standing family recipes.
The imperial fluid ounce still appears on many UK labels, especially for drinks, personal care products, and older medicinal packaging. Whether you're following a traditional recipe or measuring from labeled packaging, knowing how this unit works helps you convert accurately and maintain consistency.
1 tsp = 0.173474 fl oz (imp)
Let’s say you want to convert 100 tsp to fl oz (imp).
Using the formula:
100 × 0.173474 = 17.347 fl oz (imp)
So, 100 tsp is approximately 17.347 fl oz (imp).
| Teaspoon (US) (tsp) | Fluid Ounce (Imperial) (fl oz (imp)) |
|---|---|
| 1 tsp | 0.173 fl oz (imp) |
| 2 tsp | 0.347 fl oz (imp) |
| 3 tsp | 0.52 fl oz (imp) |
| 4 tsp | 0.694 fl oz (imp) |
| 5 tsp | 0.867 fl oz (imp) |
| 6 tsp | 1.041 fl oz (imp) |
| 7 tsp | 1.214 fl oz (imp) |
| 8 tsp | 1.388 fl oz (imp) |
| 9 tsp | 1.561 fl oz (imp) |
| 10 tsp | 1.735 fl oz (imp) |
| 11 tsp | 1.908 fl oz (imp) |
| 12 tsp | 2.082 fl oz (imp) |
| 13 tsp | 2.255 fl oz (imp) |
| 14 tsp | 2.429 fl oz (imp) |
| 15 tsp | 2.602 fl oz (imp) |