https://www.brewersfriend.com/beer-priming-calculator/How much table sugar should I use per 40 ounce bottle for bottle conditioning?
https://www.calculateme.com/recipe/sugar-by-weight
In short:
Use 0.29 oz of table sugar (= 2 level teaspoons) for each 40 oz bottle of beer to get 2.5 volumes of carbonation (American ale).