One-Third Cup of Chia Seeds in Grams
1/3 cup of chia seeds weighs 53.33g (1.88 oz, 80ml) according to USDA FoodData Central (1 cup chia seeds = 160g, spooned and leveled method). 1/3 cup = 0.3333 of a full cup (240ml). See the full conversion table below for all amounts from 1 tablespoon to 3 cups.
Chia Seeds Cup-to-Gram Conversion Table
Full range from 1 tablespoon to 3 cups. The highlighted row shows 1/3 cup.
| Amount | Grams |
|---|---|
| 1 tbsp | 10g |
| 2 tbsp | 20g |
| 1/8 cup | 20g |
| 1/4 cup | 40g |
| 1/3 cupthis page | 53.33g |
| 1/2 cup | 80g |
| 2/3 cup | 106.67g |
| 3/4 cup | 120g |
| 1 cup | 160g |
| 1 1/4 cups | 200g |
| 1 1/2 cups | 240g |
| 1 3/4 cups | 280g |
| 2 cups | 320g |
| 2 1/2 cups | 400g |
| 3 cups | 480g |
Source: USDA FoodData Central (FDC ID: 170554). 1 US cup = 240ml. Values use spooned-and-leveled method.
1/3 Cup of Different Ingredients — Weight Comparison
1/3 cup of different ingredients varies widely in weight because each has a different density. This matters when substituting ingredients in recipes.
| Ingredient | 1/3 Cup (g) |
|---|---|
| Sunflower Seeds (shelled) | 42.67g |
| Pumpkin Seeds (pepitas) | 43g |
| Sesame Seeds | 48g |
| Flaxseed (whole) | 49.67g |
| Chia Seedscurrent | 53.33g |
| Hemp Seeds (hulled) | 53.33g |
All values use USDA FoodData Central spooned-and-leveled method. Click any ingredient to see its full conversion table.
Measuring Chia Seeds Accurately
Why weight matters: 1/3 cup of chia seeds can weigh anywhere from 45g to 64g depending on how you measure it. The USDA standard is 53.33g (spooned and leveled). Scooping directly from the container can add 10–20% extra weight, which affects recipe results — especially in baking.
About chia seeds density: Chia seeds: 1 cup = 160g. Very small and dense — pack tightly. Absorb up to 12x their weight in water forming a gel. 1 tablespoon chia + 3 tablespoons water = 1 egg substitute. Black and white chia seeds are nutritionally identical. USDA FDC 170554.
About 1/3 Cup as a Measurement
1/3 cup = 5 tablespoons + 1 teaspoon = 80ml. This unusual fraction appears in recipes that scale for 2 servings from a 3-serving base. It cannot be made from combining standard 1/4 and 1/8 cup measures without error.
One-third cup is common in yogurt parfait recipes, small-batch granola bars, and single-layer cake recipes scaled for 2 servings. It is exactly 80ml in metric volume.
Frequently Asked Questions
How many grams is 1/3 cup of chia seeds?
1/3 cup of chia seeds weighs 53.33 grams (1.88 oz, 80ml). Based on USDA FoodData Central: 1 cup chia seeds = 160g, so 1/3 cup = 160 × 0.333 = 53.33g.
Is 1/3 cup of chia seeds the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 53.33g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 53.33g is the most reliable baseline for recipes.
How do I accurately measure 1/3 cup of chia seeds?
For accuracy, use a kitchen scale and weigh 53.33g of chia seeds. If using measuring cups, spoon the chia seeds lightly into a 1/3 Cup measuring cup and level off the top with a straight edge. Avoid scooping directly from the container, which compacts the ingredient and adds extra weight.
How does 1/3 cup of chia seeds compare to other ingredients?
1/3 cup of different ingredients varies significantly: Sunflower Seeds (shelled) = 42.67g, Pumpkin Seeds (pepitas) = 43g, Sesame Seeds = 48g. This is because each ingredient has a different density.