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Grams to Cups Converter — Free, Accurate & Instant

My Kitchen Gadgets • •5 min read

Grams to Cups Converter

Convert grams to cups for any ingredient instantly. Density-accurate results for 54 common kitchen ingredients — because a cup of flour weighs very differently from a cup of sugar.

✓ 54 Ingredients ✓ Density-Accurate ✓ Bidirectional ✓ Free & Instant

The cup is a volume measurement; the gram is a weight measurement. Converting between them requires knowing each ingredient's density. That's why 100g of flour equals about ¾ cup, while 100g of honey is barely ¼ cup. This converter uses verified density values sourced from the USDA National Nutrient Database for 54 common kitchen ingredients across 9 categories.

Convert Grams ↔ Cups
Quick amounts
US Cups
—
cups
Tablespoons
—
tbsp
Milliliters (vol.)
—
mL

Grams to Cups Conversion Chart

Common gram amounts converted to cups for the 15 most-used baking ingredients. Values assume spooned-and-leveled measurement (not packed or sifted):

Ingredient 25g 50g 100g 200g 250g 500g
All-Purpose Flour ⅕ ⅖ ⅘ 1 ⅗ 2 4
White Granulated Sugar ⅛ ¼ ½ 1 1 ¼ 2 ½
Butter (solid) ⅛ ⅕ ⅖ ⅞ 1 ⅛ 2 ⅕
Honey ¹⁄₁₆ ⅙ ⅓ ⅗ ¾ 1 ½
Rolled Oats ¼ ⅗ 1 ⅛ 2 ⅕ 2 ⅘ 5 ⅗
Almond Flour ¼ ½ 1 ¹⁄₁₆ 2 ¹⁄₁₆ 2 ⅗ 5 ⅕
Brown Sugar (packed) ⅛ ¼ ½ ⅞ 1 ⅛ 2 ¼
Cocoa Powder (unsweetened) ¼ ⅗ 1 ⅙ 2 ⅓ 2 ⅞ 5 ⅘
Milk (whole) ⅛ ⅕ ⅖ ⅚ 1 2 ¹⁄₁₆
Olive Oil ⅛ ¼ ½ ⅞ 1 ⅙ 2 ⅓
White Rice (raw) ⅛ ¼ ½ 1 ¹⁄₁₆ 1 ⅓ 2 ⅔
Chia Seeds ⅙ ⅓ ⅝ 1 ¼ 1 ⅗ 3 ⅛
Peanut Butter ⅛ ⅕ ⅖ ⅘ 0.97 1 0.94
Powdered / Icing Sugar ⅕ ⅖ ⅚ 1 ⅔ 2 ¹⁄₁₆ 4 ⅙
Salt (fine table) ¹⁄₁₆ ⅙ ⅓ ⅔ ⅞ 1 ¾

Why Grams Are More Precise Than Cups

Cup measurements are convenient but inconsistent — how tightly you pack flour into a cup can vary by 20–30%. Grams measure actual mass, which never changes. That's why professional bakers and pastry chefs worldwide weigh every ingredient. Here's what 1 cup looks like by weight for common ingredients:

  • 1 cup all-purpose flour = 125g
  • 1 cup white sugar = 200g
  • 1 cup butter = 227g
  • 1 cup honey = 340g
  • 1 cup rolled oats = 90g
  • 1 cup olive oil = 216g
  • 1 cup water = 237g

The conversion formula is: cups = grams ÷ (236.59 × density), where 236.59 mL is the US cup size and density is the ingredient's g/mL ratio. All density values in this converter are sourced from USDA FoodData Central.

Frequently Asked Questions

How many cups is 100g of flour?
100g of all-purpose flour equals approximately ¾ cup (0.8 cups). Bread flour is very similar at 0.787 cups. Cake flour is slightly more at 1 cup per 100g due to its lower density. Remember: always spoon flour into the measuring cup and level off — never scoop directly or you'll pack in up to 30% more.
How many cups is 200g of sugar?
200g of white granulated sugar equals exactly 1 cup. Brown sugar (packed) is 200g = ⅔ cup. Powdered/icing sugar is much lighter — 200g = 1⅔ cups. If your recipe calls for 200g sugar and you only have a cup measure, white sugar is the one case where 200g = exactly 1 cup.
How many cups is 100g of oats?
100g of rolled oats equals approximately 1⅛ cups (1.11 cups). Oats are very light for their volume — just 90g per cup — which is why oat-based recipes often specify weight rather than volume for consistency.
How many cups is 250g of butter?
250g of butter equals approximately 1⅛ cups (1.1 cups), since 1 cup of butter weighs 227g. In US recipes, butter is often specified in sticks (1 stick = 113g = ½ cup). So 250g is slightly more than 2 sticks.
Is 1 US cup always 240mL?
Not exactly. The official US customary cup = 236.59 mL (often rounded to 237 mL). Some sources use 240 mL, which is the metric cup used in Australia and Canada. The difference is small (1.4%) and rarely matters for everyday cooking, but can add up in large-batch baking. This converter uses the precise 236.59 mL value.
How do I convert grams to cups without a scale?
Use this free converter! Select your ingredient, enter the gram amount, and get the cup equivalent instantly. If you're working from a recipe that specifies grams but you only have cup measures, the converter tells you exactly how many cups to use. You can also use it in reverse — enter cups to find the equivalent in grams.
Why do different sites give different gram-to-cup conversions?
Different sources measure ingredient density differently — spooned vs. scooped flour, packed vs. loose sugar, and whether butter is measured cold or room temperature. This converter uses the spooned-and-leveled method (the standard US baking technique) and USDA density values. Minor discrepancies between converters are normal and within acceptable cooking range.
Can I use this converter for liquids?
Yes. The converter includes common liquids: water (237g/cup), milk (244g/cup), honey (340g/cup), maple syrup (322g/cup), olive oil (216g/cup), and more. For water specifically, grams and milliliters are nearly identical (1g water ≈ 1mL), so 237g water ≈ 1 cup ≈ 237mL.

Related Kitchen Calculators

🥤Tablespoons to Grams 🥛Cups to ML Converter 🍳Recipe Scaler
About This Converter Density values for all 54 ingredients are sourced from USDA FoodData Central and verified against standard culinary references. The converter uses the US customary cup (236.59 mL). Values assume spooned-and-leveled measurement. For packed brown sugar, use the "Brown Sugar (packed)" option. All calculations run in your browser with no data sent to any server.

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