If volume - 1 US teaspoon = 0.17 ounces US<br />If weight - it depends of the density of your foodstuff. For example<br />1 US teaspoon of water = 0.17 oz<br />1 US teaspoon of buckwheat = 0.15 oz<br />1 US teaspoon of honey = 0.23 oz and so on.
Comparison of Letter (shaded light blue) and Government letter sizes with some similar paper and photographic paper sizes. Letter or US Letter is a paper size commonly used as home or office stationery in Canada, the United States, Mexico and the Dominican Republic. It measures 8.5 by 11.0 inches (215.9 by 279.4 mm). US Letter size paper is a standard defined by the American National Standards Institute (ANSI), in contrast to the A4 paper used by all other nations, which is defined by the International Organization for Standardization (specifically, in ISO 216).
First-Class letter dimensions: Rectangular At least 3-1/2 inches high X 5 inches long X .007 inch thick No more than 6-1/8 inches high X 11-1/2 inches long X 1/4 inch thick Maximum weight is 3.5 ounces Letters that are considered nonmachinable are subject to a surcharge. Length is the dimension parallel to the address. To qualify for First-Class Mail card rates, a card must be: â¢ Rectangular â¢ At least 3-1/2 inches high X 5 inches long X 0.007 inch thick â¢ No more than 4-1/4 inches high X 6 inches long X 0.016 inch thick Length is the longest dimension parallel to the address.