There are 64 US tablespoons in a US fluid quart and 64 imperial tablespoons in an imperial quart.
1 Quart = 64 Tablespoons [Fluid US or UK]
1 Quart = 74.4734204 Tablespoons [Dry, US]
There are 64 tablespoons in a quart because from the largest to the smallest units between quart and tablespoon, there are 2 pints in a quart, 2 cups in a pint, 8 fl. ounces in a cup and finally 2 tablespoons in each ounce, that makes 2 * 2 * 8 * 2 = 64 tablespoons in a quart.
Quart is an imperial and US Customary volume unit. There is one type of quart in imperial system and 2 types (liquid and dry) in US Customary system. The abbreviation is "qt".
Tablespoon is a frequently used volume unit in cooking recipes. There are different types of tablespoons used as measurement unit and they are different in sizes. 1 US tablespoon is about 15 mL and 0.5 fluid ounce, whereas in Australia, 1 tablespoon is about 20 mL. The abbreviations are "tbsp", "tbs", "tb".