Cups to grams: jam
A US cup of jam weighs roughly 320 grams, or 11.29 ounces. Weighing is always more repeatable than scooping, which is why professional recipes give grams.
- Weight in ounces
- 11.288
- Cups in the weight you entered
- 0.313
- Tablespoons in that weight
- 5.00
- Tablespoons
- 16.00
- Teaspoons
- 48.0
- Volume
- 236.6
- Grams per cup used
- 320.0
- Implied bulk density
- 1.3526 g/mL
Show the working
- Amount in US cups = 1
- Or a weight to convert back = 100
- Grams per cup used = 320 = 320
- Weight = 1 * 320 = 320
- Weight in ounces = 320 / 28.349523125 = 11.2877
- Tablespoons = 1 * 16 = 16
- Teaspoons = 1 * 48 = 48
- Volume = 1 * 236.5882365 = 236.588
- Cups in the weight you entered = 320 > 0 ? 100 / 320 : 0 = 0.3125
- Tablespoons in that weight = 0.3125 * 16 = 5
- Implied bulk density = 320 / 236.5882365 = 1.352 56
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- grams = cups x grams per cup
- 1 US cup = 16 tablespoons = 48 teaspoons = 236.588 236 5 mL exactly
- 1 ounce = 28.349 523 125 g exactly
Cup figures assume the spoon-and-level convention: fluff the ingredient, spoon it into the cup and sweep the top flat. Dipping the cup straight into the bag packs in up to 20% more.
The volume conversions on this page are exact by definition. Only the grams-per-cup figure is a measured convention, and it is stated above so you can substitute your own.
Common measures of jam
| Measure | Grams | Ounces |
|---|---|---|
| 1 teaspoon | 6.67 | 0.235 |
| 1 tablespoon | 20.00 | 0.705 |
| 1/4 cup | 80.0 | 2.82 |
| 1/3 cup | 106.7 | 3.76 |
| 1/2 cup | 160.0 | 5.64 |
| 1 cup | 320.0 | 11.29 |
| 2 cups | 640.0 | 22.58 |
Rounded for the kitchen. The calculator above keeps full precision.
Frequently asked
How many grams are in a cup of jam?
About 320 g, using the spoon-and-level convention for a US cup.
How many grams are in a tablespoon of jam?
About 20.00 g, since a tablespoon is exactly one sixteenth of a US cup.
Is a US cup the same as a metric cup?
No. A US cup is 236.588 mL, a metric cup is 250 mL and an imperial cup is 284.13 mL. A recipe that says "cup" without qualification almost always means the US one.
Where the numbers come from
- Volume relationships follow the US customary definitions; the grams-per-cup figure is the widely published spoon-and-level convention for this ingredient.