What is the conversion for measuring intake in milliliters per ounce?

What is the conversion for measuring intake in milliliters per ounce?

• A. 1 oz = 20 mL
• B. 1 oz = 50 mL
• C. 1 oz = 30 mL
• D. 1 oz = 60 mL

Answer: (C)

When documenting intake, you convert ounces to milliliters to keep measurements in a consistent unit. The commonly used rounded conversion is that 1 fluid ounce equals about 30 milliliters. This comes from knowing that 1 cup is 240 milliliters and equals 8 fluid ounces, so 240 mL ÷ 8 oz = 30 mL per ounce. Using 30 mL per ounce keeps calculations simple and aligns with standard cup measurements used in care settings. If you used 20 mL, 50 mL, or 60 mL per ounce, an 8-ounce cup would equal 160 mL, 400 mL, or 480 mL respectively, which doesn’t match the known 240 mL per cup. Thus, 1 oz = 30 mL is the appropriate conversion.

When documenting intake, you convert ounces to milliliters to keep measurements in a consistent unit. The commonly used rounded conversion is that 1 fluid ounce equals about 30 milliliters. This comes from knowing that 1 cup is 240 milliliters and equals 8 fluid ounces, so 240 mL ÷ 8 oz = 30 mL per ounce. Using 30 mL per ounce keeps calculations simple and aligns with standard cup measurements used in care settings. If you used 20 mL, 50 mL, or 60 mL per ounce, an 8-ounce cup would equal 160 mL, 400 mL, or 480 mL respectively, which doesn’t match the known 240 mL per cup. Thus, 1 oz = 30 mL is the appropriate conversion.