Density-accurate conversions for 40+ baking ingredients. All math runs instantly in your browser.
The most-used conversions at a glance
A cup of flour, a cup of sugar and a cup of honey weigh completely different amounts —
120 g, 198 g and 339 g — which is why this
cups to grams converter uses an ingredient-specific density for every
conversion, never one blanket figure. Densities follow the King Arthur Baking ingredient
weight chart — the standard reference US test kitchens use — except 8 that each
name the source used instead (mostly USDA FoodData Central, for liquids the chart lists at a
flat 227 g). Flours assume the spoon-and-level method and brown sugar is measured packed, as
recipes intend. Everything is precomputed and
instant, and it works offline once the page loads.
Full ingredient weight chart
Every density the converter uses, in one chart — the same King Arthur-anchored numbers,
by the cup, half cup, quarter cup and tablespoon (1 cup = 16 tbsp).
Liquids | Ingredient | 1 cup | ½ cup | ¼ cup | 1 tbsp |
| Water | 237 g | 119 g | 59 g | 14.8 g |
Leavening & salt | Ingredient | 1 cup | ½ cup | ¼ cup | 1 tbsp |
| Baking powder (4 g per tsp) | 192 g | 96 g | 48 g | 12 g |
| Baking soda (4.6 g per tsp) | 221 g | 111 g | 55 g | 13.8 g |
| Table salt (6 g per tsp) | 288 g | 144 g | 72 g | 18 g |
| Instant yeast (3.1 g per tsp) | 149 g | 75 g | 37 g | 9.3 g |
Other | Ingredient | 1 cup | ½ cup | ¼ cup | 1 tbsp |
| Vanilla extract (13 g per tbsp) | 208 g | 104 g | 52 g | 13 g |
Grams to cups, too
The converter runs in both directions — pick grams as the "from" unit and cups as the "to"
unit and it divides by the same density. A few anchors bakers reach for constantly: 250 g of
all-purpose flour is about 2 cups plus a tablespoon; 200 g of granulated sugar almost
exactly 1 cup; 100 g of butter just under half a cup (7 tablespoons). When a recipe gives
both cups and grams, trust the grams — that's the author's actual measurement.
Use the converter above for the full ingredient list — flours, sugars, fats, dairy,
leavening, nuts and add-ins — in any direction: cups to grams, grams to cups, tablespoons to
grams, or ounces to anything. For butter specifically — sticks, cups, tablespoons — the
butter converter shows every equivalent at
once, and once your recipe is in grams the
recipe scaler can resize it cleanly.
