Cups to Grams Converter
Accurate baking measurements for perfect results every time
Convert Cups to Grams
Quick Conversions
Common Ingredient Conversion Table
This comprehensive table provides quick reference conversions for the most frequently used baking ingredients in UK kitchens. All measurements are based on standard UK cup measurements (250ml).
| Ingredient | 1 Cup | ¾ Cup | ⅔ Cup | ½ Cup | ⅓ Cup | ¼ Cup |
|---|---|---|---|---|---|---|
| Plain Flour | 120g | 90g | 80g | 60g | 40g | 30g |
| Flour (Sieved) | 110g | 80g | 70g | 55g | 35g | 27g |
| Bread Flour | 127g | 95g | 85g | 64g | 42g | 32g |
| Wholemeal Flour | 128g | 96g | 85g | 64g | 43g | 32g |
| Granulated Sugar | 200g | 150g | 130g | 100g | 65g | 50g |
| Brown Sugar | 180g | 135g | 120g | 90g | 60g | 45g |
| Icing Sugar | 100g | 75g | 70g | 50g | 35g | 25g |
| Butter | 227g | 170g | 150g | 113g | 75g | 57g |
| Honey | 340g | 255g | 227g | 170g | 113g | 85g |
| Vegetable Oil | 218g | 164g | 145g | 109g | 73g | 55g |
| Milk | 245g | 184g | 163g | 123g | 82g | 61g |
| Rolled Oats | 90g | 68g | 60g | 45g | 30g | 23g |
Speciality Ingredients
These ingredients require precise measurements for optimal baking results. The weights provided account for the unique density and texture of each ingredient.
| Ingredient | 1 Cup | ½ Cup | ¼ Cup |
|---|---|---|---|
| Cornflour | 120g | 60g | 30g |
| Cocoa Powder | 95g | 48g | 24g |
| Desiccated Coconut | 85g | 43g | 21g |
| Chopped Nuts | 150g | 75g | 38g |
| Ground Nuts | 120g | 60g | 30g |
| Fresh Breadcrumbs | 60g | 30g | 15g |
| Dry Breadcrumbs | 150g | 75g | 38g |
| Sultanas/Raisins | 200g | 100g | 50g |
| Chocolate Chips | 170g | 85g | 43g |
| Cream Cheese | 225g | 113g | 56g |
How to Convert Cups to Grams
Converting cups to grams requires understanding that different ingredients have different densities. Unlike volume measurements (cups), weight measurements (grams) account for how tightly ingredients pack together.
Basic Formula:
Grams = Cups × Ingredient Density (g/cup)
Step-by-Step Method
Step 1: Identify your ingredient and its density. For example, 1 cup of plain flour weighs 120g, whilst 1 cup of granulated sugar weighs 200g.
Step 2: Multiply the number of cups by the ingredient’s weight per cup. If you need 2 cups of flour: 2 × 120g = 240g.
Step 3: For fractional cups, convert the fraction to a decimal first. For ¾ cup of sugar: 0.75 × 200g = 150g.
Step 4: Round to the nearest whole gramme for practical measuring purposes.
Top Tip: Always use the same measuring cup throughout your recipe to maintain consistent proportions, even if the absolute weights vary slightly.
Why Grammes Are More Accurate
Weight measurements provide superior precision compared to volume measurements for several scientific reasons that directly impact your baking outcomes.
Density Variations
Flour that has been sitting compresses over time, making it denser. One cup of settled flour can weigh up to 20% more than freshly sieved flour. Weighing eliminates this variable entirely.
Measuring Technique
How you fill a measuring cup affects the result. Scooping flour directly from the bag can pack it tightly, whilst spooning it in leaves air pockets. Scales always give the same reading.
Humidity Effects
Ingredients absorb moisture from the air, changing their volume without changing their weight. A cup of flour on a humid day contains more water weight than on a dry day.
Professional Standards
Commercial bakeries and professional pastry chefs worldwide rely on weight measurements because they produce consistent, reproducible results batch after batch.
Visual Comparison Guide
Understanding the physical difference in weight between common baking ingredients helps explain why volume measurements can be unreliable.
Plain Flour
1 cup = 120g
Light and fluffy, flour contains lots of air pockets between particles, making it less dense than sugar.
Granulated Sugar
1 cup = 200g
Sugar crystals pack more tightly together, resulting in significantly more weight per cup than flour.
Butter
1 cup = 227g
As a solid fat, butter has minimal air pockets, making it the heaviest of the three common ingredients.
UK vs US Cup Measurements
Cup measurements differ between countries, which can lead to confusion when following international recipes.
| Region | Cup Volume | Equivalent |
|---|---|---|
| United States | 236.588 ml | 8 US fluid ounces |
| United Kingdom | 250 ml | 8.8 US fluid ounces |
| Canada | 250 ml | 8.8 US fluid ounces |
| Australia | 250 ml | 8.8 US fluid ounces |
| Japan | 200 ml | 6.8 US fluid ounces |
When following American recipes in the UK, this 6% difference in cup size can affect your results, particularly in recipes requiring precise ratios like cakes and pastries. Converting to grammes eliminates this concern entirely.
Common Baking Conversions
These frequently requested conversions cover the amounts most home bakers need regularly.
Flour Conversions
| Cups | Grammes | Ounces |
|---|---|---|
| 2 tablespoons | 15g | 0.5 oz |
| ¼ cup | 30g | 1.1 oz |
| ⅓ cup | 40g | 1.4 oz |
| ½ cup | 60g | 2.1 oz |
| ⅔ cup | 80g | 2.8 oz |
| ¾ cup | 90g | 3.2 oz |
| 1 cup | 120g | 4.2 oz |
| 2 cups | 240g | 8.5 oz |
| 3 cups | 360g | 12.7 oz |
| 4 cups | 480g | 16.9 oz |
Sugar Conversions
| Cups | Grammes | Ounces |
|---|---|---|
| 2 tablespoons | 25g | 0.9 oz |
| ¼ cup | 50g | 1.8 oz |
| ⅓ cup | 65g | 2.3 oz |
| ½ cup | 100g | 3.5 oz |
| ⅔ cup | 130g | 4.6 oz |
| ¾ cup | 150g | 5.3 oz |
| 1 cup | 200g | 7.1 oz |
| 2 cups | 400g | 14.1 oz |
Butter Conversions
| Cups | Grammes | Ounces | Sticks (US) |
|---|---|---|---|
| 2 tablespoons | 28g | 1 oz | ¼ stick |
| ¼ cup | 57g | 2 oz | ½ stick |
| ⅓ cup | 75g | 2.7 oz | ⅔ stick |
| ½ cup | 113g | 4 oz | 1 stick |
| ⅔ cup | 150g | 5.3 oz | 1⅓ sticks |
| ¾ cup | 170g | 6 oz | 1½ sticks |
| 1 cup | 227g | 8 oz | 2 sticks |
Measuring Tips for Best Results
Proper measuring technique ensures accuracy whether you’re working with cups or scales.
For Cup Measurements
Flour: Spoon flour into the measuring cup and level off with a straight edge. Never scoop directly from the bag, as this compresses the flour and gives you up to 25% more than intended.
Sugar: Scoop granulated sugar directly and level off. For brown sugar, pack it firmly into the cup so it holds its shape when turned out.
Butter: Use solid butter at room temperature. Press it into the cup firmly to eliminate air pockets, then level off the top.
Liquids: Pour into a liquid measuring cup placed on a flat surface. Check the measurement at eye level for accuracy.
For Weight Measurements
Zero Your Scale: Place your empty bowl on the scale and press the tare/zero button before adding ingredients.
Add Gradually: Add ingredients slowly, especially when approaching the target weight, to avoid overshooting.
Multiple Ingredients: You can zero the scale between ingredients when adding multiple items to the same bowl.
Scale Accuracy: Use a digital scale that measures to 1g precision for best results in baking.
Frequently Asked Questions
How many grammes are in one cup of flour?
One cup of plain all-purpose flour weighs 120 grammes when properly measured by spooning into the cup and levelling off. Sieved flour weighs approximately 110 grammes per cup due to increased aeration. Different flour types have different weights: bread flour weighs 127g per cup whilst cake flour weighs 114g per cup.
Is a UK cup the same as a US cup?
No, they differ slightly. A UK cup measures 250ml, whilst a US cup measures 236.588ml (8 US fluid ounces). This 6% difference can affect recipe outcomes, particularly in baking. When following American recipes in the UK, consider converting to weight measurements for better accuracy.
Why do different ingredients have different cup-to-gramme conversions?
Each ingredient has a unique density determined by particle size, shape, and how tightly particles pack together. Flour is light and airy (120g per cup), granulated sugar is denser (200g per cup), and honey is even heavier (340g per cup). This is precisely why professional bakers prefer weight measurements, as they account for these density differences.
Can I convert any recipe from cups to grammes?
Yes, any recipe can be converted if you know the specific ingredients being measured. Simply identify each ingredient, find its standard cup-to-gramme conversion, and multiply by the number of cups required. Keep a conversion chart handy in your kitchen for frequently used ingredients.
Should I sift flour before or after measuring?
This depends on the recipe wording. “1 cup flour, sifted” means measure first, then sift. “1 cup sifted flour” means sift first, then measure. When weighing, the distinction doesn’t matter as much since you’re measuring by weight rather than volume. For cup measurements, this difference can change the flour amount by up to 10%.
Are there different conversions for packed vs unpacked ingredients?
Yes, particularly for brown sugar, which recipes typically specify as “packed”. Packed brown sugar weighs 180g per cup, whilst unpacked would be significantly less. Ingredients like flour should never be packed. Dried fruits and coconut may be measured either way, so follow your recipe’s instructions specifically.
Do I need to convert liquids from cups to grammes?
For water and milk, the conversion is straightforward as they’re close to 1:1 (1 cup water = 240g, 1 cup milk = 245g). However, for thicker liquids like honey (340g per cup) or oils (218g per cup for vegetable oil), the weight differs significantly from the volume. Many bakers find it easier to measure liquids by volume (cups or millilitres) and dry ingredients by weight (grammes).
What’s the most accurate way to measure ingredients?
Digital kitchen scales provide the most accurate and consistent measurements. They eliminate variables like how you fill a cup, ingredient settling, and humidity effects. For professional-quality results, invest in a scale that measures to 1g precision and can handle at least 3kg capacity. Always zero your scale with the bowl on it before adding ingredients.