Cooking measurement confusion is one of the most common sources of recipe failure, especially when converting between volume and weight units or adapting recipes from different countries. US recipes use cups, tablespoons, and teaspoons, while European and professional recipes typically specify grams and milliliters. The conversion is not always straightforward because different ingredients have different densities — one cup of all-purpose flour weighs about 120 grams, while one cup of sugar weighs 200 grams and one cup of butter weighs 227 grams. Using a volume-to-volume conversion for these ingredients leads to significant measurement errors that affect texture and flavor. Professional bakers universally prefer weight measurements for their precision, which is why kitchen scales have become standard equipment. This cooking measurement converter handles both volume-to-volume conversions between cups, tablespoons, teaspoons, milliliters, fluid ounces, and liters, as well as accurate volume-to-weight conversions for common baking ingredients. Select your ingredient from the built-in density database and convert between any units with confidence that the output accounts for that ingredient's specific density.
Why cups-to-grams depends on the ingredient
A US cup is a volume measurement (236.6 mL), but baking recipes often require weight for precision. Because flour, sugar, and butter have very different densities, 1 cup of each weighs a different amount: flour ~125 g, sugar ~200 g, butter ~227 g. Our converter stores the density of 12+ common ingredients so every conversion is accurate. Professional bakers almost always measure by weight (grams) because it eliminates the variability of how tightly an ingredient is packed into a cup.
Common kitchen measurement equivalents
The US customary kitchen ladder: 1 gallon = 4 quarts = 8 pints = 16 cups = 128 fluid ounces. Within a cup: 1 cup = 16 tablespoons = 48 teaspoons. 1 tablespoon = 3 teaspoons = 14.79 mL. 1 stick of butter = ½ cup = 8 tablespoons = 113 g. These relationships are exact by US definition and never change between ingredients — they are pure volume equivalents.
Recipe scaling tips
When scaling recipes, multiply every ingredient by the same factor (desired servings / original servings). However, some ingredients need special attention: leavening agents (baking powder, baking soda, yeast) should be scaled conservatively — if doubling, try 1.5× first. Salt and spices are best adjusted to taste. Cooking times may also change: larger volumes of batter need longer baking at slightly lower temperatures. Our Recipe Scaler handles the multiplication, but always use your judgment for seasoning and bake times.