Baking Weight Conversion
Last reviewed: May 2026
Volume measurements (cups, tablespoons) are convenient but imprecise. A cup of flour can weigh anywhere from 110 to 150 grams depending on technique.[1] That 30% variation can mean the difference between a light cake and a dense brick. This converter uses standard reference weights for 50+ common ingredients. For other kitchen conversions, use the Cooking Converter.
| Ingredient | 1 Cup (grams) | 1 Tbsp (grams) | Notes |
|---|---|---|---|
| All-purpose flour | 125 g | 8 g | Spoon & level method |
| Granulated sugar | 200 g | 12.5 g | Consistent |
| Brown sugar (packed) | 220 g | 14 g | Pack firmly |
| Butter | 227 g | 14 g | 2 sticks |
| Water / Milk | 240 g | 15 g | By volume |
| Cocoa powder | 85 g | 5 g | Unsifted |
| Oats (rolled) | 90 g | 6 g | Old-fashioned |
| Ingredient | 1 Cup (g) | 1 Tbsp (g) | 1 Tsp (g) |
|---|---|---|---|
| All-purpose flour | 125 | 8 | 2.6 |
| Bread flour | 130 | 8 | 2.7 |
| Cake flour | 114 | 7 | 2.3 |
| Granulated sugar | 200 | 12.5 | 4.2 |
| Brown sugar (packed) | 220 | 13.8 | 4.6 |
| Powdered sugar | 120 | 7.5 | 2.5 |
| Butter | 227 | 14.2 | 4.7 |
| Cocoa powder | 86 | 5.4 | 1.8 |
| Honey / maple syrup | 340 | 21 | 7 |
| Milk | 245 | 15 | 5 |
| Vegetable oil | 218 | 13.6 | 4.5 |
| Rolled oats | 90 | 5.6 | 1.9 |
| Rice (uncooked) | 185 | 11.6 | 3.9 |
| Salt (table) | 288 | 18 | 6 |
The core problem with cup measurements is that the same volume of the same ingredient can weigh dramatically different amounts depending on how it is scooped, whether it has settled, humidity levels, and brand variations. A cup of flour scooped directly from the bag and leveled typically weighs 140–150 grams because scooping compresses the flour. The same cup measured by the spoon-and-level method (spooning flour into the cup and sweeping off the excess) weighs 120–125 grams. Sifted flour drops further to about 110 grams per cup. This 25–30% variation is enormous in baking, where ratios of flour to liquid to fat to leavening determine whether you get a tender cake or a dense hockey puck. Professional bakers and pastry chefs worldwide measure exclusively by weight because it eliminates this variability entirely.
Adding to the confusion, "one cup" means different volumes in different countries. The US customary cup is 236.6 mL (typically rounded to 240 mL). The Australian/New Zealand cup is exactly 250 mL. The Japanese cup is 200 mL. The imperial cup (used historically in the UK and Canada) was 284 mL, though most modern UK recipes now use milliliters directly. A recipe from an Australian cookbook calling for "1 cup" of flour means 250 mL, which contains approximately 156 grams — noticeably more than the 125 grams in a US cup of the same flour. Always check the origin of a recipe before converting measurements, and whenever possible, seek out versions with weight measurements to eliminate ambiguity.
Butter conversion is uniquely confusing in American recipes because it is measured by sticks, tablespoons, cups, and sometimes by weight — sometimes all in the same recipe. One US stick of butter equals 113.4 grams, 1/2 cup, 8 tablespoons, or 4 ounces. Two sticks equal 1 cup or 227 grams. European recipes typically call for butter in grams (e.g., 150g), which does not convert neatly to stick measurements. The markings on US butter wrappers (tablespoon lines) are approximate — for precise baking, weighing butter on a kitchen scale gives consistently better results. Softened butter and melted butter occupy different volumes for the same weight, so "1 cup melted butter" and "1 cup softened butter" can differ by 5–10% in actual fat content.
Liquid and dry measuring cups are not interchangeable for precise baking. Liquid measuring cups (typically glass with a pour spout and markings) are designed to be filled to a line below the rim, allowing the liquid to settle without spilling. Dry measuring cups are designed to be filled to the top and leveled with a straight edge. Using a liquid cup for flour tends to produce inaccurate measurements because you cannot properly level the ingredient, and using a dry cup for liquids risks spilling and usually results in underfilling. The difference can be 10–15% for some ingredients. For any recipe where precision matters — bread, pastry, macarons, soufflés — a $15 digital kitchen scale eliminates all of these measurement variables.
→ Invest in a kitchen scale. A digital scale ($15–$30) that reads in grams is the single most impactful upgrade for home baking. Weigh everything — flour, sugar, butter, even liquids — for professional consistency.
→ Use the spoon-and-level method for flour. If you must use cups, spoon flour into the cup and level with a knife. Never scoop directly from the bag.
→ Check the recipe's origin. A "cup" in an Australian recipe (250 mL) is not the same as a US cup (236.6 mL). When in doubt, look for the weight measurements.
See also: Recipe Scaler · Unit Converter · Calorie Calculator · Kg to Lbs
The core principle of cups-to-grams conversion is that every ingredient has a different density. A cup is a volume measurement (236.6 mL), but baking is fundamentally a chemistry of ratios by mass. Flour is light and airy at 125g per cup, while honey is dense at 340g per cup. Sugar falls in between at 200g. This means swapping one sweetener for another by volume — substituting 1 cup of honey for 1 cup of sugar — changes the mass of sweetener by 70% and will dramatically alter the recipe. When adapting recipes between volume and weight, always convert each ingredient individually using its specific density, not a generic cups-to-grams factor. Baking precision also extends to leavening — a level teaspoon of baking powder (4g) versus a heaped teaspoon (6g) can be the difference between a properly risen cake and one that overflows the pan and collapses.
The most reliable approach to consistent baking results is to find recipes that already specify weights in grams — most modern cookbook authors, food blogs, and professional resources now provide both volume and weight measurements. When converting older family recipes that only list cups, convert once carefully using the reference weights above, then note the gram amounts directly on the recipe card for all future use.
For liquid measurements, the conversion is simpler because most cooking liquids (water, milk, juice, vinegar) have a density very close to 1 gram per milliliter. One US cup of water weighs approximately 237 grams. However, denser liquids like honey (1.42 g/mL), corn syrup (1.38 g/mL), and molasses (1.41 g/mL) weigh significantly more per cup and should always be converted using ingredient-specific values rather than the water approximation.
Professional pastry chefs consider a digital scale as essential as an oven — without precise measurements, even the best recipes produce inconsistent results that undermine both quality and confidence in the kitchen.
For home cooks looking to improve their results, the simplest upgrade is a kitchen scale and a commitment to weighing ingredients — it costs less than a bag of premium flour and delivers professional-level consistency from the very first use, eliminating the guesswork that cup measurements inevitably introduce.
→ Use spoon-and-level for flour. Scoop with a spoon into the cup, then level with a knife.[1]
→ Invest in a kitchen scale. $10-20 and transforms your baking consistency.
→ Different flours have different weights. Bread flour = 130g/cup, cake flour = 115g/cup, whole wheat = 130g/cup.[2]
→ For recipe conversions. The Recipe Scaler adjusts all ingredients at once.
See also: Cooking Converter · Recipe Scaler · Weight Converter · Volume Converter