What is the difference of 1Tbs and 1tbs?

The difference between "1 Tbs" and "1 tbs" typically lies in the capitalization of the abbreviation. "Tbs" with a capital "T" usually refers to "tablespoons," while "tbs" with a lowercase "t" can also denote "tablespoons" but may be less formal. Both terms are commonly understood to represent the same measurement in cooking. It's important to note that the context and specific style guide being used may dictate the preferred capitalization.