How Many Grams in a Cup of Jam / Preserves?
A cup of jam / preserves weighs about 320 grams. Here is the complete cup-to-gram and gram-to-cup conversion table, plus the answer to common volume-to-weight questions for jam / preserves.
Volume to Grams — Jam / Preserves
Quick reference for the most common amounts. Numbers rounded to the nearest gram.
| Cups | Grams |
|---|---|
| 1/4 cup | 80 g |
| 1/3 cup | 107 g |
| 1/2 cup | 160 g |
| 2/3 cup | 213 g |
| 3/4 cup | 240 g |
| 1 cup | 320 g |
| 1 1/2 cups | 480 g |
| 2 cups | 640 g |
| 3 cups | 960 g |
| 4 cups | 1280 g |
| Tablespoons | Grams |
|---|---|
| 1 tsp | 6.7 g |
| 1 tbsp | 20 g |
| 2 tbsp | 40 g |
| 3 tbsp | 60 g |
| 4 tbsp | 80 g |
| 6 tbsp | 120 g |
| 8 tbsp | 160 g |
| 12 tbsp | 240 g |
| 16 tbsp | 320 g |
Grams to Cups — Jam / Preserves
Have a recipe in grams and need cups? Use this reverse table.
| Grams | Cups | Tablespoons |
|---|---|---|
| 25 g | 0.078 cups | 1.25 tbsp |
| 50 g | 0.156 cups | 2.5 tbsp |
| 75 g | 0.234 cups | 3.75 tbsp |
| 100 g | 0.313 cups | 5 tbsp |
| 150 g | 0.469 cups | 7.5 tbsp |
| 200 g | 0.625 cups | 10 tbsp |
| 250 g | 0.781 cups | 12.5 tbsp |
| 300 g | 0.938 cups | 15 tbsp |
| 500 g | 1.56 cups | 25 tbsp |
| 1000 g | 3.13 cups | 50 tbsp |
Why does jam / preserves weigh what it weighs?
Sticky and pasty condiments like peanut butter, tomato paste, and jam are notoriously hard to measure by volume — air pockets and clinging residue throw off cup readings. Weighing directly into the mixing bowl saves a measuring cup from the dishwasher and gives a clean, reproducible result.
For jam / preserves specifically, 1 cup weighs 320g. 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 jam / preserves?
1 cup of jam / preserves weighs approximately 320 grams.
How many grams in 1 tablespoon of jam / preserves?
1 tablespoon of jam / preserves weighs approximately 20 grams.
How many grams in 1 teaspoon of jam / preserves?
1 teaspoon of jam / preserves weighs approximately 6.7 grams.
How many grams are in 1/2 cup of jam / preserves?
1/2 cup of jam / preserves weighs about 160 grams.
How many grams are in 1/4 cup of jam / preserves?
1/4 cup of jam / preserves weighs about 80 grams.
How many tablespoons of jam / preserves are in 100 grams?
100 grams of jam / preserves is about 5 tablespoons.
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