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).
In the United States and Canada the normal size of paper is called letter size, or sometimes US letter. It is 8Â½ inches wide and 11 inches long. The other common size of paper in the US is called legal, or sometimes US legal. It is also 8Â½ inches wide, but it is 14 inches long. It is similar to the size called foolscap in Britain. Another size is called executive.