Cranberry juice

One US cup of cranberry juice weighs 253 grams (8.9 ounces). Going the other way, 100 grams is about 0.40 cups.

Also called 100% cranberry juice, unsweetened cranberry juice, pure cranberry juice, cranberry juice blend.

Fruit juices compared: cup weights side by side, the source behind each, and why they differ.

A cup of unsweetened 100% cranberry juice weighs 253 g (8.9 oz), a density of 1.07 g/mL. USDA weighs a cup at 253 g and Health Canada's 125 mL at 134 g, 253.6 g per cup. Straight cranberry juice with nothing else blended in is thinner and weighs about 243 g; most juice sold as 100% cranberry is a blend.

Cranberries are too sour to drink as pressed juice, and most bottles labelled 100% cranberry juice are cranberry blended with sweeter juices such as apple or grape, with no added sugar. USDA's record for unsweetened cranberry juice lists 31 g of sugars per cup and none added, about 12% sugar, which is more than cranberries alone supply. Straight cranberry juice, sold as just cranberry or pure cranberry, is a different and much tarter product.

USDA's Standard Reference record (FDC 168117) gives 1 cup as 253 g. Health Canada's Nutrient Value of Some Common Foods weighs 125 mL of ready-to-drink unsweetened cranberry juice at 134 g, 1.072 g/mL. The two agree within 0.3%, and the figure is published at medium confidence because it describes the common blended product rather than straight cranberry.

The physical check: a juice weighs what its dissolved sugar makes it weigh. At 12 to 13% solids, a sugar solution weighs about 1.05 g/mL; both measurements sit a little above that, at 1.07, as most bottled juices on this site do. Straight cranberry juice is held by the FDA to a minimum of only 7.5 °Brix, which weighs 1.027 g/mL, 243 g per cup, and USDA's Foundation record for straight cranberry juice from concentrate is 92.3% water, consistent with that weaker strength. No source weighs a cup of it, so 243 g is a calculation, not a published figure.

Cranberry juice cocktail, the sweetened drink of about 27% juice, is a separate entry. It weighs the same 253 g per cup because its added sugar brings it to about the same strength as a 100% blend.

Measuring juice needs no special care: a liquid fills the cup completely, with no air between particles, so the weight depends only on what is dissolved in it. Chilled juice is a fraction of a percent heavier than juice at room temperature, too little to matter in a recipe.

Practical guidance: use 253 g per cup, 127 g per half cup, 63 g per quarter cup and 15.8 g per tablespoon for 100% cranberry juice blends. For straight, unblended cranberry juice, about 243 g per cup. A 64 fl oz bottle of a 100% blend holds 8 cups, about 2.02 kg.