Skip to main content
    Cooking

    The Ultimate Guide to Cooking Conversions: Cups to Grams

    UnitConvertLab Team
    2026-03-15
    6 min read

    Why Weight Matters in Baking

    Have you ever wondered why your cookies turn out different every time? The secret often lies in how you measure your flour. A "cup" of flour can vary by as much as 20% depending on how tightly it's packed. Measuring by weight (grams) ensures consistent results every time.

    Common Baking Conversions

    Ingredient1 Cup (US)1/2 Cup1/3 Cup1/4 Cup
    All-Purpose Flour120g60g40g30g
    Granulated Sugar200g100g67g50g
    Brown Sugar (packed)220g110g73g55g
    Butter227g113g76g57g
    Milk / Water240g120g80g60g

    Volume vs. Weight

    The most important rule in the kitchen is that volume measurements (cups, tablespoons) are for liquids, while weight measurements (grams, ounces) are for solids. Professional bakers almost exclusively use scales.

    Key Takeaways

    • Flour should be "spooned and leveled" if using cups
    • Grams are the most accurate unit for baking
    • Liquid cups and dry cups are actually the same volume, but measured differently