KitchenWeightCalc
Tools

Culinary Weight & Volume Converter

Convert grams, ounces, US Customary cups, Metric cups, and butter sticks across 150 verified kitchen ingredients using USDA FoodData Central and NIST 236.588 mL cup standards, complete with live spooned vs. scooped packing density controls and instant batch scaling.

Batch
Measuring density
Converted Measure
300 g All-Purpose Flour (spooned & leveled) =
2 ½ US Cups
Physical scoop breakdown2.50 cups
1 cup
1 cup
1/2 cup
Edit either side to reverseAP Flour chart →
Grams
300 g
Ounces
10.58 oz
US Cups
2 ½ cups
Metric (250mL)
2.37 c
Tablespoons
40 tbsp
Milliliters
591.5 mL

Kitchen note: Test-kitchen baseline uses spooned & leveled (120g/cup). Switching to dip-and-sweep scooped (142g/cup) changes each cup by 22g—use the packing toggle on the scale bench to match your recipe.

Quick-Reference: Top 50 Baking Staples (1 US Cup Weights)

Expand to compare verified gram weights per 236.6 mL US cup across flours, sugars, fats, and dairy.

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Baking & Measuring Reference Guides

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Frequently Asked Questions

Why can’t you convert grams directly to cups without selecting an ingredient? ▾

Grams measure mass (weight) while cups measure volume (space). Because every kitchen ingredient has a different bulk density, 1 US Customary Cup (236.6 mL) of rolled oats weighs 90g, spooned all-purpose flour weighs 120g, granulated sugar weighs 200g, and honey weighs 340g.

What is the difference between a US Cup and a Metric/Australian Cup? ▾

A standard US Customary baking cup holds 236.588 mL (8 US fl oz / 16 tbsp). An Australian, New Zealand, Canadian, and Metric baking cup holds 250 mL — roughly 5.7% larger. Our converter supports US Customary (236.6 mL), US FDA Nutrition (240 mL), Metric (250 mL), and UK Imperial (284.1 mL) cups.

Why does 1 cup of all-purpose flour weigh 120g here when some charts say 140g? ▾

120g per cup reflects the test-kitchen "spoon-and-level" standard used by King Arthur Baking and professional pastry chefs. Dipping a dry measuring cup straight into the flour bag compacts the flour to ~142g per cup. Toggle between Spooned, Scooped, and Sifted right inside our calculator.