1/3 cup of powdered sugar equals 40 grams using Spoon & Level. Dip & Sweep: 47g. Sifted: 34g.
How Many Grams is 1/3 cup of Powdered Sugar?
40g
Using Spoon & Level
≈ ⅓ cup
Measurement Methods Compared
Spoon the ingredient into the measuring cup, then level off with a straight knife.
All Methods & Units Compared
| Unit | Spoon & Level | Dip & Sweep | Sifted |
|---|---|---|---|
| Grams | 40g | 47g | 34g |
| Tablespoons | 5.33 | 5.33 | 5.33 |
| Teaspoons | 15.98 | 15.98 | 15.98 |
| Milliliters | 78.78 | 78.78 | 78.78 |
Try Different Weights
How to Measure 1/3 cup of Powdered Sugar - 3 Methods Compared
Spoon & Level
⅓ cups
(120g/cup)
✅ Recommended
Dip & Sweep
¼ cups
(142g/cup)
⚠️ Heavy +18%
Sifted
⅜ cups
(102g/cup)
🪶 Light -15%
Powdered Sugar - Cups to Grams Conversion Table
Powdered Sugar Nutrition Facts - 40g (Calories, Carbs & Protein)
Nutrition Facts
Serving size: 40g
Per 1 cup (spoon & level): 467 calories, 119.8g carbs, 0g protein, 0g fat
Values are approximate and based on USDA data.
How to Measure Powdered Sugar Correctly
Powdered sugar should be spooned and leveled, never packed. It compacts easily and will give inaccurate measurements if pressed.
Sift powdered sugar before making frosting or glazes to remove any lumps.
Powdered sugar contains about 3% cornstarch to prevent caking - this affects thickening in recipes.
40g of powdered sugar is about 1/3 cup using Spoon & Level. For consistency, stick to one measuring method across the whole recipe.
Why Cup-to-Grams Accuracy Matters for Powdered Sugar
Small cup changes create big weight differences. For powdered sugar, 1/3 cup is about 40g, but just 1/4 cup more jumps to 70g.
This is why cup-based recipes can drift: packed, loose, or sifted volume can shift your actual grams. Using grams keeps hydration and texture consistent across batches.
1/8 cup
15g
1/3 cup (exact)
40g
1/2 cup
70g
If your recipe starts in cups, convert once to grams and bake by weight. That avoids hidden volume error and makes your result repeatable every time.
Frequently Asked Questions - Powdered Sugar Cups to Grams
1/3 cup of powdered sugar equals about 40g using Spoon & Level. Dip & Sweep: 47g. Sifted: 34g.
Yes. The same cup volume can vary by method. For this amount: Spoon & Level 40g, Dip & Sweep 47g, Sifted 34g.
1 cup of powdered sugar is approximately 120g with Spoon & Level.