Fruit Jam / Preserves — Grams ↔ Cups Converter

1 US Customary cup (236.6 mL) of fruit jam / preserves weighs 320 grams (11.29 ounces or 20g per tablespoon) when measured packed; 1 Metric cup (250 mL) weighs 338.1g and 100g equals ¼ cup + 1 tbsp for accurate kitchen baking.

Ingredient (150 verified staples)

Batch

Scale / Recipe Input

Measuring density

Standard: Packed320g / cup

Converted Measure

100 g Fruit Jam / Preserves (Packed) =

¼ US Cup + 1 tbsp

Physical scoop breakdown0.31 cups

1/4 cup

1 tbsp

Edit either side to reverseJam / Preserves chart →

Grams

100 g

Ounces

3.53 oz

US Cups

¼ cup + 1 tbsp

Metric (250mL)

0.3 c

Tablespoons

5 tbsp

Milliliters

73.9 mL

Kitchen note: 1 US Customary Cup (236.6 mL) of fruit jam / preserves (packed) weighs 320g, while 1 International Metric Cup (250 mL) weighs 338g.

Jam / Preserves: Cups & Spoons to Grams

Based on 320g per 236.6 mL US cup (Packed).

Fruit Jam / Preserves cups, tablespoons, and teaspoons to grams and ounces conversion chart (320g per US cup)
Volume	Grams	Ounces
1 Teaspoon (tsp)	6.7 g	0.24 oz
1 Tablespoon (tbsp)	20 g	0.71 oz
⅛ US Cup (2 tbsp)	40 g	1.41 oz
¼ US Cup (4 tbsp)	80 g	2.82 oz
⅓ US Cup	106.7 g	3.76 oz
½ US Cup (8 tbsp)	160 g	5.64 oz
⅔ US Cup	213.3 g	7.53 oz
¾ US Cup (12 tbsp)	240 g	8.47 oz
1 US Cup (236.6 mL)	320 g	11.29 oz
1 Metric Cup (250 mL)	338.1 g	11.93 oz
1 ½ US Cups	480 g	16.93 oz
2 US Cups	640 g	22.58 oz
3 US Cups	960 g	33.86 oz
4 US Cups (1 Quart)	1280 g	45.15 oz

Jam / Preserves: Grams to US Cups

Nearest practical baker cup & spoon breakdown.

Fruit Jam / Preserves grams to US cups and kitchen spoon fractions conversion chart
Weight	Kitchen Measure	Decimal
10 g	1 ½ tsp	0.03 c
25 g	1 tbsp + ¾ tsp	0.08 c
50 g	2 tbsp + 1 ½ tsp	0.16 c
75 g	3 tbsp + 2 ¼ tsp	0.23 c
100 g	¼ cup + 1 tbsp	0.31 c
125 g	⅓ cup + 2 ¾ tsp	0.39 c
150 g	⅓ cup + 2 tbsp + ½ tsp	0.47 c
200 g	½ cup + 2 tbsp	0.63 c
250 g	¾ cup + 1 ½ tsp	0.78 c
300 g	¾ cup + 3 tbsp	0.94 c
400 g	1 ¼ cups	1.25 c
500 g	1 ½ cups + 1 tbsp	1.56 c
750 g	2 ⅓ cups	2.34 c
1000 g	3 ⅛ cups	3.13 c

How to Measure Fruit Jam / Preserves Accurately

Spoon thick fruit jam or preserves into the cup, tap lightly to settle the gel, and scrape flush with the rim. High concentrated soluble sugar content (minimum 65% Brix) yields a dense cup weight of 320 grams.

Data reference: USDA FoodData Central FDC ID 171731; FDA Standard of Identity 21 CFR 150.160

Common Culinary Uses

Linzer cookie and tart fillings
Sponge cake roll fillings
Pastry fruit glazes
Toast and scone spreads

Weight-Aware Substitutions

Fruit butter (like apple butter) at 1:1 weight.
Lemon curd at 1:1 weight for tart pastries.

Fruit Jam / Preserves Measuring FAQs

Why is jam so heavy per cup compared to water? ▾

Jam is cooked down until sugars reach 65% to 68% concentration, creating a dense, viscous pectin-sugar-acid gel matrix.

How do I melt jam for glazing fruit tarts? ▾

Warm 1/2 cup (160 grams) of seedless jam with 1 tablespoon of water in a small saucepan over low heat until fluid, then brush gently over fruit.