These are for the moments a recipe doesn't match your kitchen: when you're cooking for more or fewer people, when it's written in grams and you only have cups, or when it wants a pan you don't own.
Paste a recipe's ingredients and choose how many people you're cooking for, and every amount comes back in cups and spoons you can measure.
Pick what you're measuring and convert between grams, cups, spoons and ounces, using USDA's weights for 56 everyday ingredients.
If you don't have the pan a recipe asks for, see how much to scale it for the pan you do have and what that does to the bake time.