How many tomatoes are in a cup? (fresh and canned)

This guide lists how many fresh whole tomatoes will yield how many cups fresh diced tomatoes. Included are the types of tomatoes you most commonly find in grocery stores (cherry tomatoes, Roma tomatoes, Campari tomatoes and grape tomatoes). I've also included cup-to-weight conversions for whole, crushed, diced and petite diced canned tomatoes.

Cherry tomatoes:

12 whole cherry tomatoes (about 9 ounces*) will yield about 1 cup diced cherry tomatoes (seeded and cored)**.

*A single cherry tomato weighs on average between ½ and 1 ounce.

**If you chop up 12 cherry tomatoes with core and seeds, you will get about 1 cup and 2 tablespoons.

Roma tomatoes:

2 Roma tomatoes (about 9 ounces*) will yield about 1 cup diced Roma tomatoes (seeded and cored)**.

*A single Roma tomato weighs on average between 4 and 5 ounces.

**If you chop up 2 Roma tomatoes with core and seeds, you will get about 1 ¼ cup.

Campari tomatoes:

3 ½ Campari tomatoes (about 7.5 ounces*) will yield about 1 cup diced Campari tomatoes (seeded and cored)**.

*A single Campari tomato weighs on average between 1 ¾ and 2 ¾ ounces.

**If you chop up 2 Campari tomatoes with core and seeds, you will get about 1 ⅓ cup.

Grape tomatoes:

30 grape tomatoes (about 7.5 ounces*) will yield about 1 cup diced grape tomatoes (seeded and cored)**.

*A single grape tomato weighs about ¼ ounce.

**If you chop up 30 grape tomatoes with core and seeds, you will get about 1 cup and 2 tablespoons.

Canned crushed tomatoes:

1 cup canned crushed tomatoes is equal to about 9 ounces.

Canned petite diced tomatoes, drained:

1 cup canned petite diced tomatoes (drained) is equal to about 8.5 ounces.

Canned diced tomatoes, drained:

1 cup canned diced tomatoes (drained) is equal to about 7.5 ounces.

Canned whole peeled tomatoes, drained:

1 cup canned whole peeled tomatoes (drained) is equal to about 8 ounces.

More produce conversion guides:

• This onions to cups guide covers everything from sliced, rough-chopped, medium-diced to minced onion.
• Use this herb conversion guide to find out how many teaspoons are in a sprig.
• This cauliflower conversion guide covers florets to cups conversions, including riced and frozen cauliflower.