Recipes / Kitchen Reference

Kitchen Measurement & Vintage Can Size Conversions

A corrected, printable version of the conversion reference kept at the front of the creator's handwritten recipe notebook.

Spoons & Cups

MeasureEquivalent
1 tablespoon (Tbsp)3 teaspoons (tsp)
¼ cup4 tablespoons
⅓ cup5 tablespoons + 1 teaspoon
½ cup8 tablespoons
⅔ cup10 tablespoons + 2 teaspoons
¾ cup12 tablespoons
1 cup16 tablespoons

US Fluid Volume

Fluid ouncesEquivalent
½ fl oz1 tablespoon
1 fl oz2 tablespoons
2 fl oz¼ cup
2⅔ fl oz⅓ cup
4 fl oz½ cup
8 fl oz1 cup = ½ pint
16 fl oz2 cups = 1 pint
32 fl oz4 cups = 1 quart
128 fl oz16 cups = 1 gallon

Vintage Numbered Cans (Approximate)

Can designationCommon nominal capacity
Picnic / No. 1 picnicAbout 1¼ cups (10 fl oz)
No. 1 tallAbout 2 cups (16 fl oz)
No. 2About 2½ cups (20 fl oz)
No. 2½About 3½ cups (28 fl oz)
No. 3About 4 cups (32 fl oz), varies by shape
No. 10About 12–13 cups (96–104 fl oz)

Important Distinctions

Fluid ounces measure volume, while ounces on packaged food often mean weight. An 8-ounce can of thick food is not automatically one cup of food. For recipes listing a can by its number, check the named ingredient and package label, especially for historical labels or unusually shaped cans.

Vintage numbers are approximations, not universal guarantees; the original notebook includes additional numbered cans whose actual capacities may differ by style or product. The handwritten ¾-cup entry was corrected to 12 tablespoons, and the ⅓-cup entry to 5 tablespoons plus 1 teaspoon.

Kitchen reference based on the creator's notebook; standard US customary volume conversions independently checked for arithmetic consistency. Can capacities are historical approximations.