Ingredient Weight Calculator

Ingredient Weight Calculator: calculate ingredient weight for cooking and nutrition. Practical tips and worked examples.

An ingredient weight calculator converts between volume measurements (cups, tablespoons, teaspoons, millilitres, fluid ounces) and weight (grams, ounces) for common baking and cooking ingredients, using the actual density of each ingredient. Volume-to-weight conversion is essential for accurate baking because ingredients measured by volume (especially flour) vary significantly in weight depending on how loosely or densely they are packed. Recipe Scale Calculator covers recipe scaling once you have your ingredient weights.

The key insight is that different ingredients have very different densities: one cup of flour weighs approximately 120 g, while one cup of honey weighs 340 g — a 183% difference for the same measured volume. Weighing ingredients on a digital scale and converting from the recipe's cup measurements using this tool gives far more consistent results than scooping directly, which can vary by 20–30% depending on technique.

Select the ingredient from the dropdown — each ingredient uses its own density value (grams per cup).
Choose a direction: "Volume → Weight" to convert cups or tablespoons into grams, or "Weight → Volume" to find out how many cups a given gram weight represents.
Select the volume unit (cups, tablespoons, teaspoons, millilitres, or fluid oz).
Enter the quantity.
The calculator shows weight in grams and ounces (volume → weight), or volume in your chosen unit plus the cups equivalent (weight → volume).

Volume-to-weight conversion formula

Weight (g) = Volume (cups) × density (g per cup)

Volume (cups) = Weight (g) ÷ density (g per cup)

Unit conversions: 1 cup = 16 tablespoons = 48 teaspoons = 236.6 ml = 8 fl oz.

Worked example: Recipe calls for 2 cups of all-purpose flour. Density = 120 g per cup. Weight = 2 × 120 = 240 g. Reverse: 300 g of plain flour → 300 ÷ 120 = 2.5 cups. Note: density values assume the standard US cup (236.6 ml); UK/AU metric cup is 250 ml — adjust if your recipe uses metric cups.

Reading your ingredient weight result

Why densities differ between ingredients

Density differences between ingredients are large and practically significant. Flour (120 g/cup) is light because it traps air; butter (227 g/cup) is dense because it contains no air pockets. Brown sugar packed into a cup (220 g) weighs 83% more than the same volume of sifted icing sugar (120 g). Cocoa powder is especially variable — sifted cocoa can be as low as 75 g/cup, while unsifted pressed cocoa can reach 120 g/cup. The values in this calculator use the standard culinary reference values for lightly spooned (not packed or sifted) dry ingredients.

Food tips and best practices

Always weigh flour rather than scoop it — scooping directly from the bag compresses the flour and adds 20–30% extra by weight, which throws off the flour-to-liquid ratio in baked goods.
For butter, weight is almost always more reliable than volume — butter packaging in the UK and US typically includes gram and ounce markings on the wrapper.
Brown sugar is specified "packed" in most recipes — the 220 g/cup value in this calculator assumes packed brown sugar.
Honey, maple syrup, and other viscous liquids are much easier to measure by weight than by volume — the container sticks to the measuring cup and you lose some quantity.
Metric cups (250 ml) used in Australian recipes are about 6% larger than US cups (237 ml) — when converting a metric-cup recipe to grams, use the metric cup density: multiply g/cup by 250 ÷ 237 ≈ 1.055.

1 cup of all-purpose flour weighs 120 g when spooned in; the same cup scooped directly from the bag can weigh 150–160 g — a 25–33% overestimate that makes baked goods dense and dry.
1 cup of honey (340 g) weighs 183% more than 1 cup of icing sugar (120 g) — using the same volume measurement for both without converting to weight gives entirely wrong ratios.
1 tablespoon = 1/16 cup; 1 teaspoon = 1/48 cup — for small quantities of spices or leavening agents, tablespoon and teaspoon conversions to grams are essential for scaling.
Butter: 1 tablespoon = approximately 14 g; 1 stick (US) = 113 g; 1 cup = 227 g — the most commonly needed conversions in baking between US and metric recipes.

Common mistakes to avoid

Assuming all ingredients have the same density as water (1 g/ml) — flour is approximately half the density of water, and honey is approximately 1.4× the density; using 1 g/ml for everything is significantly wrong.
Scooping flour directly from the bag — this packs the flour and adds up to 30% extra by weight; always spoon flour into the measuring cup and level it off, or use a scale.
Confusing US cups (237 ml) with metric cups (250 ml) — recipes from Australia and some European countries use metric cups; the difference is about 5–6% per cup and compounds across multiple ingredients.
Not accounting for packing — brown sugar is almost always specified as "packed", while icing sugar and cocoa powder should be sifted and spooned, not packed; the difference in density is 30–50%.

Ingredient density values are culinary reference averages. Actual densities vary by brand, moisture content, temperature, and preparation method. Density values for flour assume the standard US all-purpose flour (unbleached or bleached, lightly spooned and levelled). These values are suitable for home baking guidance and recipe conversion. Commercial food production should use certified weight measurements. This calculator does not account for metric cups (250 ml) — if your recipe uses metric cups, multiply gram results by 250 ÷ 237 ≈ 1.055.