Kitchen conversions between weight and volume sometimes are obvious and easy. A cup of water is 8 ounces whether tallied by a scale or by volume. And most sticks of butter are conveniently marked to make switching between ounces, tablespoons and cups effortless.

But plenty of commonly used ingredients aren't nearly so intuitive. How many cups are in 28-ounce can of tomatoes? What does 1 ounce of chopped parsley mean in volume? Do dairy products weigh out the same as water?

To suss it out, we gathered our scales and measuring cups to sort out the weight and volume equivalencies of some the most common ingredients that didn't have obvious conversions.

Chart
Kitchen Conversions

CANNED GOODS

Ingredient Weight / Volume
14½-ounce can crushed tomatoes411 grams / 1½ cups
28-ounce can whole tomatoes, drained 794 grams / 2½ cups
15-ounce can tomato sauce 425 grams / 1½ cups
14½-ounce can diced tomatoes 411 grams / 1¾ cups
6-ounce can tomato paste 170 grams / 13 tablespoons
15½-ounce can chickpeas, drained 439 grams / 1⅓ cups
15½-ounce can kidney beans, drained439 grams / 1½ cups
15½-ounce can white beans, drained439 grams / 1½ cups

PRODUCE

Ingredient Weight / Volume
1 large yellow onion, peeled (About 3 cups chopped)13 ounces / 368 grams
1 large shallot, peeled  (½ cup chopped) 2½ ounces / 71 grams
1 cup roughly chopped cilantro leaves ⅝ ounce / 18 grams
1 cup roughly chopped parsley leaves 1⅛ ounces / 32 grams
½ cup fresh dill fronds, lightly packed ¼ ounce / 7 grams
½ cup chopped fresh dill ½ ounce / 14 grams
1 tablespoon chopped fresh thyme leaves⅒ ounce / 3 grams

DAIRY

IngredientWeight / Volume
16-ounce tub sour cream454 grams / 2 cups
5.3-ounce container Greek yogurt 150 grams / ⅔ cup
5.3-ounce container regular yogurt 150 grams / ⅔ cup
8-ounce container crème fraiche 227 grams / 1 cup
1 pint heavy cream (16 fluid ounces) 454 grams / 2 cups
1 pint half and half (16 fluid ounces) 454 grams / 2 cups
½ gallon whole milk (64 fluid ounces)1,814 grams / 8 cups