Cups to Grams: The Only Conversion Chart You Need

If you have ever wondered why a recipe from a British or Australian food blog turns out differently than expected, the measuring system is often the culprit. Cups are a volumetric measurement, and volume does not reliably translate to weight — especially for dry ingredients where density varies dramatically by ingredient and even by how you fill the cup.

Why cups are unreliable for baking

Professional bakers and pastry chefs almost universally use weight — grams in particular — because weight is consistent. A gram of flour is always a gram of flour. A cup of flour, however, can range from about 120 grams to over 160 grams depending on whether you:

That 30% variance does not matter much for a forgiving recipe like pancakes, but in bread baking or macarons where hydration ratios are critical, it can be the difference between success and failure.

The complete conversion chart

The values below are for level cups using the standard US cup (236.6 mL). Grams are the actual weight of each ingredient when measured properly.

Why the density varies so much

Look at the range in that chart: 1 cup of honey weighs 340 grams, but 1 cup of cake flour weighs only 114 grams. That is a 3× difference. Even among similar ingredients — granulated sugar at 200 g vs. powdered sugar at 120 g — you see a 40% gap just from how finely the crystals are ground.

Dense, heavy ingredients like butter, honey, and sugar pack tightly into a cup. Light, airy ingredients like sifted flour and powdered sugar trap air pockets. Hygroscopic ingredients like brown sugar absorb moisture from the air and gain weight over time, which is why recipes specify "packed" or "lightly packed."

How to use a kitchen scale

Step 1: Place your bowl on the scale and press Tare (or Zero) to reset to zero with the bowl already on it.

Step 2: Add your ingredient until you reach the target weight. The scale shows only the ingredient weight, not the bowl weight.

Step 3: Tare again before adding the next ingredient. This way you can add multiple ingredients to the same bowl without removing it.

A digital kitchen scale accurate to 1 gram is all you need. Models in the $15–25 range are perfectly adequate for home baking. The time you save from not cleaning measuring cups is a bonus.

If you must use measuring cups

If you are in a situation without a scale, at least use the correct technique for dry ingredients:

For flour: Use a spoon to scoop flour from the bag or container into your measuring cup, then level the top with the straight edge of a knife or spatula. Do not scoop directly from the bag — you will compress the flour and get 20–40% too much.

For brown sugar: Pack it firmly into the cup until it holds the shape of the cup when turned out.

For liquids: Use a liquid measuring cup (the ones with a spout and markings on the side) and check at eye level for accuracy.

For sticky ingredients like honey or peanut butter: Spray the cup with non-stick spray first so the ingredient slides out cleanly.

For recipes you make repeatedly — birthday cake, bread, cookies — it is worth converting the cup measurements to grams once and writing them on the recipe card. You will get consistent results every time. Our cooking converter handles volume-to-weight conversions for all common ingredients instantly.