Convert cooking units, look up ingredient weights, and scale recipe servings instantly.
Reference conversions for All-purpose flour
| Measure | Weight (g) |
|---|---|
| 1 cup | 120 g |
| 1 tbsp | 7.5 g |
| 1 tsp | 2.5 g |
Weights are approximate — ingredient density varies with packing and moisture.
Same-class conversions (cup ↔ ml, g ↔ oz) use exact NIST unit factors. Cross-class conversions (cup ↔ g) use ingredient density — grams per cup from the King Arthur Baking Weight Chart.
Servings scaling multiplies the amount by desired ÷ original before converting.
A cup is a volume measure, not a weight. Dense ingredients like honey pack many more grams into a cup than light ones like flour.
They match the King Arthur Baking Weight Chart, which is the baking industry standard. Actual weights vary slightly with sifting, packing, and moisture.
The original amount is multiplied by desired servings ÷ original servings before the unit conversion is applied.
This calculator converts cooking measurements between cups, tablespoons, teaspoons, millilitres, grams, ounces, and more — including cross-class conversions that cross the volume-to-weight boundary using ingredient-specific densities. You can also scale the entire recipe up or down by entering your original and desired serving counts.
The headline figure is the converted amount in your chosen target unit. Below the result card, a reference table shows how 1 cup, 1 tbsp, and 1 tsp translate to grams for the selected ingredient, so you can quickly double-check related measurements without re-entering values.
A cookie recipe calls for 2 cups of all-purpose flour and makes 4 servings. Scale it to 6 servings and convert to grams.
Scale ratio is 6 ÷ 4 = 1.5, so 2 × 1.5 = 3 cups are needed. At 120 g per cup (King Arthur standard), 3 cups of all-purpose flour equals 360 g.
A cup is a fixed volume, but grams measure mass. Dense ingredients like honey (about 336 g per cup) weigh far more than light, airy ones like all-purpose flour (about 120 g per cup). The calculator uses ingredient-specific densities from the King Arthur Baking Weight Chart to handle this correctly.
They match the King Arthur Baking Ingredient Weight Chart, which is the baking industry standard. Real weights can vary slightly depending on how an ingredient is sifted, packed, or stored. Weighing on a scale is always more precise than volume measures.
Enter the original number of servings the recipe makes and the number you want. The calculator multiplies every amount by desired ÷ original before converting units, so you only need to enter one ingredient at a time.
Yes — within the same class (volume to volume, or mass to mass) the conversion uses exact NIST factors. Across classes (volume to mass or vice versa) the calculator needs an ingredient to look up the density; selecting the correct ingredient from the list gives the most accurate result.
Volume conversions use the exact factors from NIST Handbook 44 and SP 811: 1 cup = 236.5882365 ml, 1 tbsp = 14.78676478 ml, 1 tsp = 4.92892159 ml, 1 fl oz = 29.5735295625 ml. Mass conversions use 1 oz = 28.349523125 g and 1 lb = 453.59237 g.
Same-class conversions use exact NIST ratio factors (NIST Handbook 44 / SP 811): 1 cup = 236.5882365 ml, 1 tbsp = 14.78676478 ml, 1 tsp = 4.92892159 ml, 1 fl oz = 29.5735295625 ml for volume; 1 oz = 28.349523125 g and 1 lb = 453.59237 g for mass. Cross-class conversions bridge volume and mass through ingredient density (g/ml). Volume to mass: convert the input to ml, multiply by density to get grams, then convert grams to the target mass unit. Mass to volume: convert to grams, divide by density to get ml, then convert to the target volume unit. Density values for baking solids come from the King Arthur Baking Ingredient Weight Chart (grams per cup divided by 236.5882365 ml/cup); pure liquids use direct g/ml values (water = 1.0, whole milk = 1.03). When original and desired servings are both provided, the raw amount is multiplied by the scale ratio (desired ÷ original) before the unit conversion is applied.
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