How Many Grams in a Cup of Onion (Diced)?
A cup of onion (diced) weighs about 160 grams. Here is the complete cup-to-gram and gram-to-cup conversion table, plus the answer to common volume-to-weight questions for onion (diced).
Volume to Grams — Onion (Diced)
Quick reference for the most common amounts. Numbers rounded to the nearest gram.
| Cups | Grams |
|---|---|
| 1/4 cup | 40 g |
| 1/3 cup | 53.3 g |
| 1/2 cup | 80 g |
| 2/3 cup | 107 g |
| 3/4 cup | 120 g |
| 1 cup | 160 g |
| 1 1/2 cups | 240 g |
| 2 cups | 320 g |
| 3 cups | 480 g |
| 4 cups | 640 g |
| Tablespoons | Grams |
|---|---|
| 1 tsp | 3.3 g |
| 1 tbsp | 10 g |
| 2 tbsp | 20 g |
| 3 tbsp | 30 g |
| 4 tbsp | 40 g |
| 6 tbsp | 60 g |
| 8 tbsp | 80 g |
| 12 tbsp | 120 g |
| 16 tbsp | 160 g |
Grams to Cups — Onion (Diced)
Have a recipe in grams and need cups? Use this reverse table.
| Grams | Cups | Tablespoons |
|---|---|---|
| 25 g | 0.156 cups | 2.5 tbsp |
| 50 g | 0.313 cups | 5 tbsp |
| 75 g | 0.469 cups | 7.5 tbsp |
| 100 g | 0.625 cups | 10 tbsp |
| 150 g | 0.938 cups | 15 tbsp |
| 200 g | 1.25 cups | 20 tbsp |
| 250 g | 1.56 cups | 25 tbsp |
| 300 g | 1.88 cups | 30 tbsp |
| 500 g | 3.13 cups | 50 tbsp |
| 1000 g | 6.25 cups | 100 tbsp |
Why does onion (diced) weigh what it weighs?
Produce densities depend on how the ingredient is prepared — whole, diced, minced, or pureed. A cup of whole garlic cloves weighs very differently from a cup of minced garlic. Recipes that specify "1 cup diced onion" assume a particular prep; weighing eliminates the guesswork and accounts for natural variation in produce size.
For onion (diced) specifically, 1 cup weighs 160g. That is the figure to plug into recipes calling for cup measurements when you want gram precision. ChefVault stores this density (and 118 others) so you never have to look it up twice.
Recipes that originated outside the United States almost always specify weight in grams. Translating these to US cup measurements introduces error in every step. The ChefVault app handles the math automatically — paste a recipe, hit convert, get a clean weight-based version.
Frequently Asked Questions
How many grams are in 1 cup of onion (diced)?
1 cup of onion (diced) weighs approximately 160 grams.
How many grams in 1 tablespoon of onion (diced)?
1 tablespoon of onion (diced) weighs approximately 10 grams.
How many grams in 1 teaspoon of onion (diced)?
1 teaspoon of onion (diced) weighs approximately 3.3 grams.
How many grams are in 1/2 cup of onion (diced)?
1/2 cup of onion (diced) weighs about 80 grams.
How many grams are in 1/4 cup of onion (diced)?
1/4 cup of onion (diced) weighs about 40 grams.
How many tablespoons of onion (diced) are in 100 grams?
100 grams of onion (diced) is about 10 tablespoons.
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