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.
A fluid ounce (US) is a unit of volume used to measure liquids in the U.S. customary system. It's abbreviated as fl oz and is commonly seen in cooking, nutrition labeling, and liquid packaging. One US fluid ounce is defined as 1/128 of a US gallon, which equals exactly 29.5735 milliliters.
Despite the term "ounce" also being used for weight, a fluid ounce specifically measures liquid volume. It's important to distinguish the two, especially in recipes or products where both liquid and solid measurements appear. The US fluid ounce is a standard unit across many industries, from beverages and sauces to cleaning products and personal care items,
Uses: The fluid ounce is widely used in everyday life throughout the United States. In the kitchen, it shows up in recipes for measuring water, milk, oil, and other liquids. You'll also find it on nutrition labels, drink containers, and liquid medicine bottles. Most bottled drinks sold in the U.S., from soda cans to sports drinks, are labeled in fluid ounces.
Outside the kitchen, fluid ounces are also used to measure everyday products like shampoo, lotion, and household cleaners. Packaging labels often list fluid ounces to help shoppers gauge how much liquid is inside each bottle. In pharmacies, you may still see fluid ounces on medication packaging, though many prescriptions now use milliliters for greater accuracy and consistency.
1 tsp = 0.166667 fl oz
Let’s say you want to convert 6 tsp to fl oz.
Using the formula:
6 × 0.166667 = 1 fl oz
So, 6 tsp is approximately 1 fl oz.
| Teaspoon (US) (tsp) | Fluid Ounce (US) (fl oz) |
|---|---|
| 1 tsp | 0.167 fl oz |
| 2 tsp | 0.333 fl oz |
| 3 tsp | 0.5 fl oz |
| 4 tsp | 0.667 fl oz |
| 5 tsp | 0.833 fl oz |
| 6 tsp | 1 fl oz |
| 7 tsp | 1.167 fl oz |
| 8 tsp | 1.333 fl oz |
| 9 tsp | 1.5 fl oz |
| 10 tsp | 1.667 fl oz |
| 11 tsp | 1.833 fl oz |
| 12 tsp | 2 fl oz |
| 13 tsp | 2.167 fl oz |
| 14 tsp | 2.333 fl oz |
| 15 tsp | 2.5 fl oz |