Convert cups, grams, ounces for baking ingredients.
A cup of flour can weigh anywhere from 110g to 160g depending on how it's scooped — a 45% variance that ruins recipes. Professional bakers always use weight (grams). Key conversions: 1 cup all-purpose flour = 125g, 1 cup sugar = 200g, 1 cup butter = 227g (2 sticks), 1 cup water = 240g. One tablespoon = 3 teaspoons = 15 mL. Butter is unique: 1 stick = ½ cup = 113g = 8 tbsp. For best results, use the spoon-and-level method for cups (spoon flour into cup, level with knife) or better yet, invest in a kitchen scale ($10-15) for consistent results every time.