How Much Juice One Lemon. To be on the safe side, assume that one such lemon will give you 2 tablespoons of juice. There are 4 to 5 lemons in 1 pound.

Furthermore, some recipes include cup measurements of lemon juice instead of spoon measurements. You need 2 medium lemons or 1.5 large lemons to get 1/4 cup of juice (2 ounces). 1 large lemon (6 oz.) = 5 tablespoons fresh juice.