If the recipe is from the United States, use U.S. The difference in volume measurements can be quite noticeable when producing large quantities. If you are using a recipe written in cups and ounces, always verify the source of your recipe to determine if it has been written using the U.S. U.S.) and Canadian brands contain 341 mL (12 fl. bottles or cans of soft drinks or beer, you will see that American brands contain 355 mL (12 fl. Where you will notice this most is with any liquid products manufactured in Canada these products will show the metric conversion using imperial measurement, but any products originating in the United States will show the conversion using U.S. and imperial volume measurements Unit of Measurement Not only are the number of ounces in pints, quarts, and gallons all larger in the imperial system, the size of one fluid ounce is also different, as shown in the table in Table 7. The only difference between the imperial system and the U.S. When the # follows a number, the # is read as pounds. When # is used in front of a number, such as in #10, the # is read as the word number. Note: There is sometimes confusion about the symbol #. and imperial units of measurement Type of Measurement and imperial systems are shown in Table 6. The most commonly used units of measurement in the U.S. or imperial measurements on the label, and many suppliers still quote prices in cost per pound instead of cost per kilogram. Most Canadian packages include both Canadian and U.S. This is one of the main reasons Canadians need to know how to work in both systems. However, “declaring” and “truly adopting” are not always the same.īecause of Canada’s strong ties to the United States, a lot of our food products come from across the border, and many Canadian producers also sell in the U.S. or metric system was declared the official measuring system for Canada, which is now in use in most of the world, with the United States being the major exception. and imperial systems of measurement until 1971 when the S.I. Systems of MeasurementĬanada used the U.S. It is also used to measure certain non-liquid volumes such as the size of car trunks, backpacks and climbing packs, computer cases, microwaves, refrigerators, and recycling bins, as well as for expressing fuel volumes and prices in most countries around the world.Ĭup (US) to Liter Conversion Table Cup (US)ġ5 cup (US) = 15 × 0.2365882365 L, l = 3.Trade Math 5 Imperial and U.S. However, due to the mass-volume relationship of water being based on a number of factors that can be cumbersome to control (temperature, pressure, purity, isotopic uniformity), as well as the discovery that the prototype of the kilogram was slightly too large (making the liter equal to 1.000028 dm 3 rather than 1 dm 3), the definition of the liter was reverted to its previous, and current definition.Ĭurrent use: The liter is used to measure many liquid volumes as well as to label containers containing said liquids. History/origin: There was a point from 1901 to 1964 when a liter was defined as the volume of one kilogram of pure water under the conditions of maximum density at atmospheric pressure. One liter is equal to 1 cubic decimeter (dm 3), 1,000 cubic centimeters (cm 3), or 1/1,000 cubic meters (m 3). Literĭefinition: A liter (symbol: L) is a unit of volume that is accepted for use with the International System of Units (SI) but is technically not an SI unit. Standardized measuring cups are used instead. Actual drinking cups can vary significantly in terms of size and are generally not a good representation of this unit. customary teaspoons.Ĭurrent use: The cup is typically used in cooking to measure liquids and bulk foods, often within the context of serving sizes. One United States customary cup is equal to 236.5882365 milliliters as well as 1/16 U.S. The metric cup is defined as 250 milliliters. Definition: A cup is a unit of volume in the imperial and United States customary systems of measurement.
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