Nursing unit conversion practice problems

Dosage calculation practice for nursing students: solve unlimited new problems below with instant checking, or work through the 15 problems with answers further down.

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Formula to use

1 g = 1,000 mg · 1 mg = 1,000 mcg · 1 L = 1,000 mL

1 kg = 2.2 lb · 1 inch = 2.54 cm

1 tsp = 5 mL · 1 tbsp = 15 mL · 1 fl oz = 30 mL · 1 cup = 240 mL

°C = (°F − 32) × 5 ÷ 9 · °F = °C × 9 ÷ 5 + 32

Open the nursing unit conversion calculator to check your own numbers step by step.

15 practice problems with answers

Solve each problem on paper first, then open the answer to compare every step.

Convert: 0.25 g = ? mg
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1. 1 g = 1,000 mg: 0.25 × 1,000 = 250 mg.
Answer: 250 mg
Convert: 39.2 °C = ? °F (round to the tenth)
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1. 39.2 × 9 ÷ 5 + 32 = 102.56, rounded to 102.6 °F.
Answer: 102.6 °F
Convert: 1 tablespoon = ? mL
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1. 1 tbsp = 15 mL: 1 × 15 = 15 mL.
Answer: 15 mL
Convert: 2 teaspoons = ? mL
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1. 1 tsp = 5 mL: 2 × 5 = 10 mL.
Answer: 10 mL
Convert: 500 mcg = ? mg
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1. 1,000 mcg = 1 mg: 500 ÷ 1,000 = 0.5 mg.
Answer: 0.5 mg
Convert: 500 mg = ? g
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1. 1,000 mg = 1 g: 500 ÷ 1,000 = 0.5 g.
Answer: 0.5 g
Convert: 750 mg = ? g
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1. 1,000 mg = 1 g: 750 ÷ 1,000 = 0.75 g.
Answer: 0.75 g
Convert: 1 teaspoon = ? mL
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1. 1 tsp = 5 mL: 1 × 5 = 5 mL.
Answer: 5 mL
A client drank 8 fl oz of juice. How many mL is that for the intake record?
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1. 1 fl oz = 30 mL: 8 × 30 = 240 mL.
Answer: 240 mL
Convert: 0.125 mg = ? mcg
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1. 1 mg = 1,000 mcg: 0.125 × 1,000 = 125 mcg.
Answer: 125 mcg
Convert: 2 tablespoons = ? mL
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1. 1 tbsp = 15 mL: 2 × 15 = 30 mL.
Answer: 30 mL
A client drank 4 fl oz of juice. How many mL is that for the intake record?
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1. 1 fl oz = 30 mL: 4 × 30 = 120 mL.
Answer: 120 mL
Convert: 0.125 g = ? mg
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1. 1 g = 1,000 mg: 0.125 × 1,000 = 125 mg.
Answer: 125 mg
Convert: 5 kg = ? lb (round to the tenth)
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1. 5 × 2.2 = 11 lb.
Answer: 11 lb
Convert: 23 kg = ? lb (round to the tenth)
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1. 23 × 2.2 = 50.6 lb.
Answer: 50.6 lb