Convert Volume from Cups to Teaspoons (cup to tsp)

What Is a Cup?

A cup is a unit of volume measurement equal to 8 fluid ounces (fl oz).

It's one of the most common measurements used in recipes for cooking and baking, especially in the United States.

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What's the Difference Between a US Cup and a Metric Cup?

While they share the same name, not all cups are created equal.

A US customary cup is defined as 8 US fluid ounces (approximately 237 milliliters).

However, the metric cup used in countries like Australia, Canada, and New Zealand is standardized to 250 milliliters.

This slight difference is crucial to remember when following international recipes to ensure the correct ingredient proportions.

US Customary Cup:

• Volume: Approximately 237 mL
• Common In: The United States

Metric Cup:

• Volume: 250 mL
• Common In: Australia, Canada, New Zealand, and many other countries.

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Where Did the "Cup" Measurement Come From?

The name of the measurement isn't a coincidence. Before standardized units became common, recipes relied on informal measurements using everyday kitchenware.

The "cup" literally referred to the volume of a standard teacup. Over time, this was standardized into the precise unit we use today.

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Why Are Dry and Liquid Measuring Cups Different?

Although the unit of volume (8 fl oz) remains the same, the tools used to measure dry and liquid ingredients differ for a reason.

Using the wrong type can lead to inaccurate measurements.

• Liquid measuring cups are typically made of glass or plastic. They feature a spout for easy pouring and have measurement lines etched below the rim to prevent spills while measuring.
• Dry measuring cups are designed to be filled to the very top and leveled off with a straight edge for an accurate measurement of ingredients like flour or sugar.

What is a Teaspoon (tsp)?

A teaspoon (tsp) is a unit of volume, but its exact measurement varies by system.

• In the metric system, a teaspoon is defined as exactly 5 mL. This is the standard for culinary and medical purposes in most of the world.
• In the United States customary system, a teaspoon is defined as 1/6 of a US fluid ounce, which is approximately 4.92892 mL.

In both systems, it is standard that three teaspoons equal one tablespoon.

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How Many Milliliters (mL) in a Teaspoon?

For consistency in nutritional labeling, recipes, and medicine, a teaspoon is legally defined in the United States as exactly 5 milliliters (mL).

While the precise scientific conversion is 4.92892 mL, the simpler 5 mL standard is widely adopted for its convenience.

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Are All Teaspoons the Same Size?

No, they are not. It's crucial to distinguish between a measuring teaspoon and a cutlery teaspoon (the one you eat with). For accurate kitchen conversions, only a measuring spoon will do.

• A measuring teaspoon is a calibrated utensil designed to hold a specific volume: 5 mL.
• A cutlery teaspoon, used for stirring coffee or eating, is not standardized and can hold anywhere from 2.5 to 7.3 mL.

For accuracy in all your baking measurements, always use a proper set of measuring spoons.

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How Many Teaspoons in a Tablespoon?

The conversion from teaspoons to tablespoons is a simple and memorable 3-to-1 ratio.

There are precisely three teaspoons in 1 tablespoon.

This fundamental relationship (3 tsp = 1 tbsp) is a cornerstone of any recipe measurement, consistent across both US customary and imperial systems.