Estimate conversions between volume (cups, tbsp) and weight (grams, oz) for common kitchen ingredients using typical densities.
Last updated: March 2026
In baking and cooking, precision is key to consistent results. Volume-based measurements (like cups and spoons) are notoriously unreliable because they are affected by how an ingredient is packed. A cup of flour can weigh anywhere from 120g to 160g depending on whether it was sifted, scooped, or packed.
Weight-based measurements (grams and ounces) are constant. 100g of flour is always 100g, regardless of its density. This calculator helps you convert your favorite volume-based recipes into precise weights, ensuring your cakes rise perfectly and your sauces are never too thick.
Choose the ingredient you're converting from the dropdown. Each ingredient has a unique density based on typical bulk density when measured by volume. For unlisted ingredients, measure a known volume (1 cup = ~240ml) on a scale to find the weight, then use that ratio.
Select whether you want to convert from volume (cups, tbsp, tsp) to weight (grams, oz), or vice versa. Most recipes come in volume measurements, so volume-to-weight is the most common choice for converting old recipes to precise weights.
Type the volume amount (cups) or weight amount (grams)—whatever matches your chosen direction. You can use decimal numbers for precision (e.g., 1.5 cups or 137.5 grams). The calculator instantly computes all equivalent measurements.
All equivalent measurements appear instantly: cups, tablespoons, teaspoons, grams, and ounces. Use the unit that matches your scale or measuring tools. For baking, use grams for the highest precision; for cooking, cups are usually fine.
Replace the volume measurement in your recipe with the weight equivalent. Now when you repeat the recipe, use your scale to measure exactly the same amounts. Your results become consistent across batches, season to season, and kitchen to kitchen.
You have your grandmother's beloved chocolate chip cookie recipe written in cups and tablespoons, but your results are inconsistent—sometimes cake-like, sometimes too dry. You decide to convert it to weights for perfect consistency.
Now every time you bake, you use your kitchen scale to measure exactly: 270g flour, 213g brown sugar, 227g butter. The cookies come out the same texture every batch—perfectly chewy with crispy edges.
Why this matters: The original 2.25 cups of flour could weigh anywhere from 225g to 300g depending on how you scooped—undercooked vs. overcooked cookies! Weight eliminates guess-work.
Brown sugar is packed with moisture and molasses, making it denser than flour. A cup of flour weighs ~120g, but a cup of packed brown sugar weighs ~213g. This is why scooping brown sugar is critical—whether you press it down changes the weight significantly.
Weigh a known volume (1 cup) of the ingredient on a scale, record the weight in grams, and do the math: weight ÷ cups = density. For example, if 1 cup of your ingredient weighs 150g, then 2 cups = 300g. Create a personal reference list for unlisted items.
Grams are more precise and universal. However, many recipes still use cups and ounces. Use whatever unit your scale displays—modern kitchen scales usually toggle between grams, ounces, and pounds. Grams are the most accurate for baking.
Temperature can slightly affect density of ingredients like butter and oils. These conversions assume room temperature (68–72°F). Cold butter is denser than room-temperature butter, so 1 cup cold butter weighs slightly more than 1 cup room-temperature butter. For most baking, this difference is negligible (<5%), but precision bakers should note it.
Unpacked brown sugar weighs ~190–200g per cup; packed weighs ~213g. This calculator uses packed (the more common baking approach). If your recipe specifies 'unpacked,' reduce the weight by ~10%. Always follow recipe specifications.
Yes! 1 cup milk = ~245g, 1 cup oil = ~218g. Since liquids have different densities, always use your scale for precision. Never assume 1 cup = 240g for everything; refer to the density of the specific liquid.
Ingredient density varies by brand, roast, grind, and processing. The densities in this calculator are industry averages. For recipes where precision is critical (bread, pastry), test once, then use those weights consistently.
Weigh everything for baking and pastry (where precision matters most). For cooking (soups, stews), volume is usually fine. Professional bakers and kitchens use scales exclusively because results are infinitely more consistent.
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