How Many Grams in a Cup of Jam?
1 cup of jam = 320 grams · 100g = 0.31 cups
Jam is dense with fruit and sugar, weighing about 320 grams per cup. Its weight varies a little with how much fruit pulp versus syrup it contains. It is sticky to measure, so a warmed or oiled cup helps it release.
Based on a measured density of 320 g per US cup (236.6 ml), spooned and levelled rather than scooped. Last reviewed .
Jam cups to grams table
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/8 | 40 g | 1.41 oz | 2 |
| 1/4 | 80 g | 2.82 oz | 4 |
| 1/3 | 107 g | 3.76 oz | 5.33 |
| 1/2 | 160 g | 5.64 oz | 8 |
| 2/3 | 213 g | 7.53 oz | 10.7 |
| 3/4 | 240 g | 8.47 oz | 12 |
| 1 | 320 g | 11.3 oz | 16 |
| 1 1/2 | 480 g | 16.9 oz | 24 |
| 2 | 640 g | 22.6 oz | 32 |
| 3 | 960 g | 33.9 oz | 48 |
Jam grams to cups table
Working the other way? Here's how many cups common gram weights of jam come to, handy when a recipe lists jam in grams but you only have cup measures.
| Grams | Cups | Ounces | Tablespoons |
|---|---|---|---|
| 25 g | 0.08 | 0.88 oz | 1.25 |
| 50 g | 0.16 | 1.76 oz | 2.5 |
| 75 g | 0.23 | 2.65 oz | 3.75 |
| 100 g | 0.31 | 3.53 oz | 5 |
| 125 g | 0.39 | 4.41 oz | 6.25 |
| 150 g | 0.47 | 5.29 oz | 7.5 |
| 175 g | 0.55 | 6.17 oz | 8.75 |
| 200 g | 0.62 | 7.05 oz | 10 |
| 225 g | 0.7 | 7.94 oz | 11.2 |
| 250 g | 0.78 | 8.82 oz | 12.5 |
| 300 g | 0.94 | 10.6 oz | 15 |
| 350 g | 1.09 | 12.3 oz | 17.5 |
| 400 g | 1.25 | 14.1 oz | 20 |
| 500 g | 1.56 | 17.6 oz | 25 |
Jam: US, metric & UK cups compared
A “cup” isn’t the same size everywhere, so 1 cup of jam weighs a different number of grams depending on which cup your recipe uses. The US cup is 236.6 ml, while Australia, New Zealand, Canada and modern UK recipes use a 250 ml metric cup. Here’s 1 cup of jam in each:
| Cup standard | Size | 1 cup jam | Used in |
|---|---|---|---|
| US cup | 237 ml | 320 g | United States (most US recipe sites) |
| Metric cup | 250 ml | 338 g | Australia, NZ, Canada & modern UK |
| UK imperial cup | 284 ml | 384 g | Older British recipes |
| Japanese cup | 200 ml | 271 g | Japan |
Unless a recipe says otherwise, US recipes mean the US cup and Australian/UK recipes mean the 250 ml metric cup. The tables higher up this page use the US cup.
Related ingredients
Quick reference: Jam in grams
- ⅛ cup jam = 40g
- ¼ cup jam = 80g — a quarter cup of jam in grams
- ⅓ cup jam = 107g — a third of a cup
- ½ cup jam = 160g — half a cup of jam in grams
- ⅔ cup jam = 213g — two thirds of a cup
- ¾ cup jam = 240g — three quarters of a cup
- 1 cup jam = 320g — one cup of jam in grams
- 2 cups jam = 640g — two cups
Jam by the spoonful and by the ounce
Recipes rarely stop at cups. One tablespoon of jam weighs about 20g, and one teaspoon about 6.67g, because a US cup holds 16 tablespoons or 48 teaspoons.
- 1 tablespoon jam to grams = 20g
- 2 tablespoons jam = 40g
- 3 tablespoons jam = 60g
- 1 teaspoon jam = 6.67g
Weight units do not depend on the ingredient, so 8 oz of jam is 227g and 4 oz is 113g, the same as 8 oz of anything else. That 8 oz is 0.71 cups of jam — the number that does change, because it depends on how much a cup of jam weighs.
How many cups is 100g, 200g or 300g of jam?
Because one cup of jam weighs about 320 grams, you can convert any weight to cups by dividing by 320. So 100g of jam is about 0.31 cups, 200g is about 0.62 cups, 250g is about 0.78 cups, and 300g is about 0.94 cups. For any other amount, type the grams straight into the converter above and switch it to show cups.
How to measure jam accurately
For the most reliable baking results, weigh jam on a kitchen scale rather than scooping by volume. One US cup of jam weighs about 320 grams (11.3 oz), but the exact figure changes with how tightly it's packed and the brand. Scooping straight from the bag compacts jam and can leave you 15 to 20% over, so spoon it into the cup and level it off for the closest match to the figures above. Use the tables for quick reference, or the converter for any custom amount in cups, grams, ounces or tablespoons.
Tip: Warm jam slightly to loosen it before measuring or spreading, especially for thumbprint cookies and cake fillings where it needs to flow.
Jam conversions: common questions
How many grams are in a cup of jam?
One US cup of jam weighs approximately 320 grams (11.3 oz).
How many grams in half a cup of jam?
Half a cup (½ cup) of jam weighs approximately 160 grams.
How many grams in a quarter cup of jam?
A quarter cup (¼ cup) of jam weighs approximately 80 grams.
How do I convert jam from cups to grams?
Multiply the number of cups by 320. For example, 2 cups of jam = 640 grams, and ¾ cup = 240 grams.
How many cups is 100g of jam?
100 grams of jam is about 0.31 cups. 200g is about 0.62 cups and 300g is about 0.94 cups, since 1 cup weighs 320 grams.
How many grams in a metric (Australian) cup of jam?
One 250 ml metric cup of jam, used in Australia, New Zealand, Canada and modern UK recipes, weighs about 338 grams, compared with 320 grams for a 236.6 ml US cup.