How many milliliters are in 1 teaspoon?

How many milliliters are in 1 teaspoon?

• A. 1 mL
• B. 5 mL
• C. 10 mL
• D. 15 mL

Answer: (B)

A teaspoon is a small volume unit, and in the metric system milliliters measure volume. In common conversions, 1 teaspoon equals 5 milliliters. This comes from the relationship that a tablespoon is 15 milliliters and contains 3 teaspoons, so 15 mL ÷ 3 = 5 mL. Therefore, 1 teaspoon is 5 mL. The other options don’t fit: 1 mL is too small, 10 mL is two teaspoons, and 15 mL is a tablespoon.

A teaspoon is a small volume unit, and in the metric system milliliters measure volume. In common conversions, 1 teaspoon equals 5 milliliters. This comes from the relationship that a tablespoon is 15 milliliters and contains 3 teaspoons, so 15 mL ÷ 3 = 5 mL. Therefore, 1 teaspoon is 5 mL. The other options don’t fit: 1 mL is too small, 10 mL is two teaspoons, and 15 mL is a tablespoon.