US vs Canadian/French Packaging Sizes, the Equivalents
An 8 oz package of American cream cheese weighs 227 g. That's the reference size in American recipes, different from the 250 g blocks commonly found on Canadian grocery shelves.
Why the sizes don't line up
American packaging is built around the ounce (28.35 g) as its base unit, which produces sizes like 8 oz, 14 oz, or 15 oz — round numbers in ounces, but not in grams. Products sold in Canada or France, on the other hand, aim for round sizes in grams (250 g, 500 g). The result: an ingredient that looks equivalent from one country to another isn't always exactly so, which can throw off a recipe if you swap one size for the other without adjusting quantities.
Common American sizes, converted
- Cream cheese: 8 oz = 227 g (vs. 250 g for the common Canadian size)
- Bacon: 1 lb = 454 g
- Canned tuna: 5 oz = 142 g
- Canned diced tomatoes: 14 oz = 397 g
- Canned beans: 15 oz = 425 g
- Pasta: 16 oz (1 lb) = 454 g
- Butter: 1 lb (4 sticks) = 454 g
These conversions all follow the same simple rule: multiply the number of ounces by 28.35 g. The result isn't always a round number, which is normal — the original sizes were never designed with the metric system in mind.
The baking package sizes that come up all the time
Some American dessert recipes describe their ingredients by the purchase size rather than by weight. The most frequent, converted with the same 28.35 g per ounce rule:
- "One 12-oz bag of chocolate chips" = 340 g — about 2 cups of chips
- "One 14-oz can of sweetened condensed milk" = 397 g — not to be confused with evaporated milk, unsweetened, sold in 12 oz cans (340 g)
- "One 8-oz package of cream cheese" = 227 g, the standard for cheesecake recipes, which often call for three or four
- "One packet of yeast" = ¼ oz ≈ 7 g, or 2 ¼ tsp of dry yeast
- "One 15-oz can of pumpkin purée" = 425 g, the base of pumpkin pie
- "One 16-oz box of confectioners' sugar" = 454 g, about 3 ¾ cups
In Canada, sweetened condensed milk comes in 300 ml cans and cream cheese in 250 g bricks: in both cases the local size is slightly bigger than the American one, and for a cheesecake — sensitive to proportions — it's better to weigh out the 227 g called for than to use the whole brick.
Liquids: pint, quart, and the Canadian liter
For liquids, American recipes speak in fluid ounces, pints, and quarts, while Canadian and French packaging uses round milliliters. An American pint of cream (16 fl oz) is 473 ml, where the Canadian grocery store sells 500 ml containers; a quart of milk (32 fl oz) is 946 ml, versus a liter in Canada. The 5% difference doesn't show in a soup or a smoothie, but it counts in homemade ice cream or a pancake batter where the liquid-to-flour ratio is tight.
What to do when your local size doesn't match exactly
If an American recipe calls for 8 oz (227 g) of cream cheese and all you have is a 250 g block, the 23 g gap stays minor for most recipes — a 10% difference that usually goes unnoticed in a frosting or a dip. For a recipe more sensitive to proportions, like a cheesecake where the ingredient ratio directly affects texture, it's better to weigh out the exact amount called for rather than using the whole block.
The habit worth building
Whenever an American recipe lists a package size rather than a precise quantity ("1 can of tomatoes" rather than "400 g of tomatoes"), check the exact weight printed on the original label if you can — can sizes vary from one manufacturer to another, even within the US, and the figure quoted in a recipe is sometimes only an approximation of the most common size.
The same gaps show up in France
French package sizes also follow round numbers in grams (125 g, 200 g, 500 g), different from both American ounce-based sizes and Canadian ones. A product imported from the US and sold as-is — without local repackaging — keeps its ounce-based size on the label, which explains why some specialty products display weights that look arbitrary once converted (227 g, 397 g) instead of the round numbers we're used to.
When you adapt an American recipe for regular use, jot down the exact weight in grams rather than the original package size — it saves you from redoing this conversion every time, and it keeps the recipe usable no matter what package size happens to be on the shelf that day.
The ounces on these packages convert with the weight references in the complete conversion chart; and if you hesitate between fluid ounce and weight ounce, that's one of the traps described in the most common conversion mistakes.