Standard cans of diced tomatoes typically contain 28 ounces, which equals about 10 to 12 medium whole tomatoes. The exact count varies based on tomato size, whether they are Roma or regular varieties, and whether the can is labeled as a #2 can or a 28 oz can. Knowing this conversion helps you substitute fresh tomatoes easily and scale recipes with confidence.
Ever stood in front of a can of diced tomatoes at the grocery store and wondered how many actual tomatoes ended up inside? It is a question that comes up more often than you might think, especially when a recipe calls for fresh tomatoes and you want to swap in a convenient can instead. Understanding the how many tomatoes are in a can of diced tomatoes answer saves you time, reduces food waste, and takes the guesswork out of cooking.
This guide breaks down everything you need to know. From standard can sizes to tomato varieties and easy substitution tips, you will have all the details right here. Let us dive in.
## Understanding Standard Can Sizes for Diced Tomatoes
Canned tomatoes come in several sizes, and knowing them is the first step toward answering the question of how many tomatoes are actually inside. Most grocery stores carry a few common sizes.
### The Most Common Can Size: 28 Ounces
The standard can of diced tomatoes you will find in most supermarkets holds 28 ounces, also known as a #2 can. This size is the workhorse of American kitchens. It is the one most recipes assume you have on hand.
A 28 oz can typically contains about 2.5 to 3 cups of diced tomatoes. When you count the whole tomatoes that go into the can, you are looking at roughly 10 to 12 medium-sized tomatoes. These are usually regular globe tomatoes, not tiny cherry tomatoes or large beefsteak varieties.
### Other Common Can Sizes
Not all cans are the same. Here is a quick look at other sizes you might encounter:
- 14.5 oz cans: These smaller cans hold about 5 to 6 medium tomatoes worth of diced product. They are great for small recipes or when you do not need a full 28 oz can.
- 10 oz cans: Often sold in packages of two or four, these mini cans contain about 3 to 4 medium tomatoes each.
- 6 oz cans: Perfect for single servings or side dishes. These hold about 2 medium tomatoes worth of diced tomatoes.
### What Does the Net Weight Mean?
The net weight printed on the label tells you the total weight of the contents, including the liquid. Canned diced tomatoes usually sit in tomato juice or puree, so not every ounce is solid tomato flesh. The actual tomato solids make up roughly 70 to 80 percent of the total weight. Keep this in mind when you are doing precise conversions.
## How Many Whole Tomatoes Go Into a Can?
The number of whole tomatoes that end up in a can depends on several factors. It is not a one-size-fits-all answer.
### Medium Globe Tomatoes
Most commercial canned diced tomatoes use standard globe tomatoes. These are the round, medium-sized tomatoes you find in the produce aisle. On average, a medium globe tomato weighs about 6 to 8 ounces before processing.
Since a 28 oz can has roughly 20 to 22 ounces of tomato solids, you can estimate that it takes about 10 to 12 medium tomatoes to fill one standard can. This is the most common answer you will see when searching how many tomatoes are in a can of diced tomatoes.
### Roma Tomatoes
Roma tomatoes, also called plum tomatoes, are denser and have fewer seeds and less water content than globe tomatoes. They weigh about 2 to 3 ounces each on average. Because they are smaller, you need more of them to fill a can. A 28 oz can of Roma diced tomatoes might contain 14 to 18 individual tomatoes.
Roma tomatoes are popular for canning because they have a thicker flesh and more concentrated flavor. If you are using Roma diced tomatoes in a recipe, keep in mind they may have a slightly different texture than standard canned diced tomatoes.
### Cherry Tomatoes
Cherry tomatoes are much smaller, usually weighing about 0.5 to 1 ounce each. You would need a large number of them to fill a can. However, cherry tomatoes are rarely sold canned as diced tomatoes. They are more commonly found sun-dried, roasted, or in specialty products.
## Converting Canned Tomatoes to Fresh Tomatoes
One of the most practical reasons people ask about tomato counts is to convert between canned and fresh tomatoes in recipes. Here is a simple guide.
### The Basic Conversion Rule
One pound of fresh tomatoes equals approximately one 14.5 oz can of diced tomatoes. A standard 28 oz can is roughly equal to 2 pounds of fresh tomatoes.
This means if a recipe calls for 2 pounds of fresh diced tomatoes, you can grab a single 28 oz can and be done with it. No peeling, no seeding, no chopping.
### How Many Fresh Tomatoes Equal One Can?
To make this even simpler, here is a quick reference:
- 14.5 oz can: About 2 to 3 medium tomatoes
- 28 oz can: About 5 to 6 medium tomatoes
- No. 1 can (10 oz): About 1.5 to 2 medium tomatoes
These numbers assume medium-sized tomatoes weighing around 6 to 8 ounces each. Larger tomatoes will reduce the count, and smaller ones will increase it.
### When Fresh Works Better
Sometimes fresh tomatoes are the better choice. If a recipe is a fresh summer salsa or a caprese salad, canned diced tomatoes simply will not do the job. But for sauces, soups, stews, and chili, canned tomatoes work beautifully. They are already cooked and seasoned, which means they blend into dishes faster and more evenly.
## Measuring Canned Diced Tomatoes for Recipes
Getting the right amount of diced tomatoes from a can can be tricky if you are not sure how to measure them. A few tips will make this process much easier.
### How Many Cups in a Can?
A standard 28 oz can of diced tomatoes yields about 2.5 to 3 cups. If a recipe calls for 1 cup of diced tomatoes, you will use roughly one-third of a standard can. For 2 cups, you will need about two-thirds of a can.
If you are scaling a recipe up or down, knowing the cup-to-can ratio is essential. For example, if you are making a large batch of chili for a party and need 6 cups of diced tomatoes, you will need two full 28 oz cans.
### Measuring Tips
Drain or not drain? Most recipes that call for diced tomatoes want you to include the juice. However, if the recipe specifies “drained diced tomatoes,” you should strain the liquid first. One cup of drained diced tomatoes weighs less than one cup of undrained diced tomatoes.
If you need to measure precisely, a kitchen scale works best. One cup of undrained canned diced tomatoes weighs approximately 8 to 9 ounces. If you are ever unsure, you can also check the label on the can, which often lists the volume in cups.
For smaller measurements, keep in mind that how many tablespoons are in a cup can help you scale down easily. One cup equals 16 tablespoons, so a half-cup of diced tomatoes is 8 tablespoons.
## Substituting Different Types of Canned Tomatoes
Not every recipe calls for diced tomatoes specifically. Sometimes you need a different form, and you want to know if you can swap them in.
### Diced vs. Crushed vs. Whole Canned Tomatoes
These three types are not always interchangeable, but they can be in a pinch. Here is a quick comparison:
- Diced tomatoes: Tomatoes cut into small, uniform cubes. They hold their shape well and work great in soups, stews, and casseroles.
- Crushed tomatoes: Tomatoes that are broken down into smaller pieces with some liquid. They cook down faster and create a smoother sauce.
- Whole canned tomatoes: Whole tomatoes packed in juice. You need to crush or chop them yourself, but they offer the freshest flavor.
If a recipe calls for diced tomatoes and you only have crushed, you can substitute. The texture will be slightly different, but the flavor will be very similar. If you have whole canned tomatoes, simply crush them by hand or with a fork before adding them to your dish.
### Tomato Paste as a Substitute
Tomato paste is a concentrated form of tomatoes. You can use it when you need a strong tomato flavor but do not have diced tomatoes on hand. To substitute, use 1 tablespoon of tomato paste plus 1 tablespoon of water for every half cup of diced tomatoes called for in a recipe.
### Fresh Tomatoes as a Substitute
Fresh tomatoes work well as a substitute for canned diced tomatoes in most cooked dishes. Simply chop them into small cubes and add them to the pot. Keep in mind that fresh tomatoes have more water content, so your dish may be slightly more liquid than expected. You can simmer it longer to reduce the liquid if needed.
## Why Canned Diced Tomatoes Are a Kitchen Staple
Canned diced tomatoes are one of the most versatile ingredients in any kitchen. They are affordable, available year-round, and incredibly convenient.
### Long Shelf Life
Unlike fresh tomatoes, which can go bad within a few days, canned diced tomatoes last for years in your pantry. A sealed can remains safe to use well beyond the printed date, as long as the can is not damaged or swollen.
### Consistent Quality
Canned tomatoes are picked and processed at peak ripeness. This means they often have a more consistent flavor than fresh tomatoes, which can vary greatly depending on the season and where they were grown.
### Time Savings
Peeling, seeding, and chopping fresh tomatoes takes time. Canned diced tomatoes skip all of that prep work. They are ready to go straight from the can into your pot, pan, or slow cooker.
## Common Mistakes to Avoid When Using Canned Diced Tomatoes
Even experienced cooks make mistakes with canned tomatoes. Here are a few to watch out for.
### Not Checking the Net Weight
Every can of diced tomatoes is slightly different in terms of how many tomatoes it contains. Always check the net weight on the label for accurate conversions. Do not assume all 28 oz cans are exactly the same.
### Forgetting to Drain
Some recipes specifically call for drained diced tomatoes. If you add the liquid when it is not wanted, you can end up with a watery sauce or soup. Always read the recipe carefully before you open the can.
### Using Expired Cans
While canned tomatoes last a long time, they do not last forever. Check the expiration date before using. If the can is rusty, dented deeply, or bulging, throw it away. Do not risk using a compromised can.
### Overcooking
Canned diced tomatoes are already cooked during the canning process. They break down quickly when heated. If you add them too early in a long-cooking recipe, they may turn mushy. Add them in the last 20 to 30 minutes for the best texture.
## Expert Tips for Getting the Most Out of Your Canned Tomatoes
Professional cooks and chefs have a few tricks that make working with canned tomatoes even easier.
Tip 1: Taste before you season. Canned tomatoes already contain salt and sometimes added sugar. Taste your dish before adding extra seasoning.
Tip 2: Roast them for deeper flavor. Spread canned diced tomatoes on a baking sheet and roast at 400°F for 15 to 20 minutes. This caramelizes the natural sugars and creates a richer taste.
Tip 3: Freeze leftovers. If you open a can and do not use it all, pour the remaining tomatoes into a freezer-safe bag. They will keep for up to 6 months in the freezer.
Tip 4: Use the liquid wisely. The juice in canned tomatoes is packed with flavor. Do not throw it away. Use it as a base for soups, stews, or even pasta sauce.
## Frequently Asked Questions
How many tomatoes are in a standard can of diced tomatoes?
A standard 28 oz can of diced tomatoes contains the equivalent of about 10 to 12 medium-sized whole tomatoes. The exact number varies based on tomato size and variety, but this is a reliable average for most grocery store brands.
Can I substitute fresh tomatoes for canned diced tomatoes?
Yes, you can substitute fresh tomatoes for canned diced tomatoes. Use about 1 pound of fresh tomatoes for every 14.5 oz can. Keep in mind that fresh tomatoes have more water content, so your dish may need a slightly longer cooking time to reduce the liquid.
How many cups are in a 28 oz can of diced tomatoes?
A 28 oz can of diced tomatoes yields approximately 2.5 to 3 cups. If you need precise measurements, one cup of undrained canned diced tomatoes weighs about 8 to 9 ounces. For recipe scaling, this ratio is very helpful to remember.
Are diced tomatoes the same as crushed tomatoes?
No, diced tomatoes and crushed tomatoes are not the same. Diced tomatoes are cut into small, firm cubes and hold their shape well. Crushed tomatoes are broken into smaller pieces with more liquid and create a smoother texture. You can substitute one for the other in most recipes, but the final texture will differ slightly.
How long do canned diced tomatoes last after opening the can?
Once opened, canned diced tomatoes should be transferred to a sealed container and used within 5 to 7 days. You can also freeze leftovers in a freezer-safe bag for up to 6 months. Always label the container with the date so you know when to use it by.
What is the difference between a #2 can and a 28 oz can?
A #2 can and a 28 oz can are essentially the same thing. The #2 designation refers to the standard can size used in the food industry, which holds approximately 28 ounces or about 3.5 cups of liquid. This is the most common size for canned diced tomatoes found in American grocery stores.
## Conclusion
Knowing how many tomatoes are in a can of diced tomatoes is a small detail that makes a big difference in the kitchen. Whether you are converting a recipe, substituting fresh for canned, or simply trying to understand what you are buying, this guide gives you the answers you need.
A standard 28 oz can holds about 10 to 12 medium tomatoes, yields 2.5 to 3 cups, and equals roughly 2 pounds of fresh tomatoes. These conversions work for most recipes and make cooking with canned tomatoes simple and stress-free.
Next time you reach for a can of diced tomatoes, you will know exactly what you are getting. Keep a few cans in your pantry, and you will always have a reliable ingredient ready for soups, sauces, stews, and more. Happy cooking!
Key Takeaways
- A standard 28 oz can of diced tomatoes equals about 10 to 12 medium whole tomatoes.
- One cup of canned diced tomatoes weighs approximately 8 to 9 ounces.
- Cherry tomatoes and Roma tomatoes yield different counts per can due to size differences.
- You can easily substitute fresh tomatoes using a simple conversion ratio of 1 pound fresh equals one 14.5 oz can.
- Diced tomatoes, crushed tomatoes, and whole canned tomatoes are not always interchangeable in recipes.
- A #2 can is the most common can size and holds about 2.5 to 3 cups of diced tomatoes.
- Always check the net weight on the label for accurate conversions.
Frequently Asked Questions
What is how many tomatoes are in a can of diced tomatoes?
how many tomatoes are in a can of diced tomatoes is an important topic with many practical applications.
