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Can Size Converter

Convert standard canned food sizes to cups and ounces.

Result

Volume
1.88 cups
Fluid Ounces
15 fl oz

Actual fill volume can vary a few ounces by brand and product - check the can's label for the exact net weight/volume when precision matters.

About the Can Size Converter

Canned food sizes are still often labeled with old-fashioned trade names like No. 2 or No. 10 rather than a clear volume, a holdover from a standardized can-numbering system that predates most shoppers' familiarity with it.

How It Works

Select a can size, and the calculator converts its standard fluid ounce volume into cups, using the straightforward 8 fluid ounces per cup relationship.

cups = fluid ounces ÷ 8

Examples

A standard can of beans

A 15 oz (No. 300) can converts to 1.875 cups, the size most home recipes assume when they call for "one can" of beans.

A restaurant-size can of tomatoes

A 109 oz (No. 10) can converts to about 13.6 cups, roughly seven times the volume of a standard 15 oz can.

Advantages

  • Covers the full range of common can sizes from 8 oz picnic cans up to No. 10 restaurant cans
  • Converts to both cups and fluid ounces at once for easy recipe substitution
  • Includes the traditional trade names alongside the fluid ounce figures for reference

Common Mistakes

  • Assuming a can labeled with a trade name like No. 2 has an intuitive, obvious volume without checking
  • Not accounting for brand-to-brand variation in exact fill volume when precision matters
  • Confusing a No. 10 can's bulk food-service size with a standard grocery-shelf can

Edge Cases to Watch For

  • Actual fill volume can vary by a few ounces between brands and products even for cans labeled the same nominal size, so checking the label's exact net weight or volume matters when precision is important.
  • No. 10 cans (the largest size listed) are a food-service and bulk-storage size, not something typically found on regular grocery shelves, and are common in institutional kitchens and long-term food storage.
  • Some canned goods list weight rather than fluid volume on the label, which isn't always identical to fluid volume depending on the density of the contents, like solid-pack tomatoes versus a thinner sauce.

Common Use Cases

  • Substituting a differently sized can for what a recipe specifies
  • Converting a bulk food-service can size down to a home-recipe-friendly cup measurement
  • Understanding old-fashioned can trade names still used on some labels
Written & fact-checked by the Calculateus TeamLast updated August 5, 2026How we verify our formulas

Frequently asked questions

What is a "No. 10 can" used for?

No. 10 cans are the large, restaurant/food-service size (about 109-117 oz, roughly 13-14 cups) - common for institutional cooking, food storage/prepping, and bulk ingredients like tomatoes or beans, not sold in typical grocery aisles.

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Conclusion

Can sizing terminology is mostly a historical artifact at this point, but it still shows up often enough on labels that converting it to a familiar cup measurement is genuinely useful. Once converted, substituting a different can size into a recipe, or scaling a recipe written around a specific can, is just simple division from the fluid ounce total.