What is the correct milliliter value for 1 ounce?

What is the correct milliliter value for 1 ounce?

• A. 15 mL
• B. 20 mL
• C. 25 mL
• D. 30 mL

Answer: (D)

Converting fluid units between ounces and milliliters is the key idea here. One fluid ounce equals about 29.57 milliliters, so we round to 30 mL for practical dosing. That’s why 30 mL is the best match for 1 ounce in most medical contexts. The other values are smaller fractions of an ounce—15 mL is roughly half an ounce, 20 mL about two-thirds, and 25 mL just under an ounce—so they don’t represent a full ounce as accurately.

Converting fluid units between ounces and milliliters is the key idea here. One fluid ounce equals about 29.57 milliliters, so we round to 30 mL for practical dosing. That’s why 30 mL is the best match for 1 ounce in most medical contexts. The other values are smaller fractions of an ounce—15 mL is roughly half an ounce, 20 mL about two-thirds, and 25 mL just under an ounce—so they don’t represent a full ounce as accurately.