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HESI A2 Metric Conversion Exam
Bank: 200 Practice Questions with
Rationales (mL, mg, mcg, L)
Table of Contents
Subtopic 1: Basic Metric Conversions (mL, mg, mcg, L)..................................2
Subtopic 2: Dosage Conversions in Clinical Scenarios (mL, mg, mcg, L).........8
Subtopic 3: Pediatric Dosage and Metric Unit Calculations............................14
Subtopic 4: Intravenous (IV) Fluid and Medication Conversions....................21
Subtopic 5: Advanced Unit Conversions and Dimensional Analysis...............27
Subtopic 6: Medication Reconstitution and Solution Preparation (mL, mg,
mcg, L)...........................................................................................................34
Subtopic 7: Metric Unit Conversions in Drug Label Interpretation.................40
Subtopic 8: Intravenous (IV) Solutions and Infusion Unit Conversions...........47
Subtopic 9: Pediatric Dosage Conversions and Fluid Calculations.................53
Subtopic 10: Advanced Clinical Calculations Involving Conversions..............60
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Subtopic 1: Basic Metric Conversions (mL, mg,
mcg, L)
Questions 1–20
1. How many milliliters are in 1.5 liters?
A. 105 mL
B. 1150 mL
C. 1500 mL
D. 1.5 mL
Correct answer: C
Rationale: 1 liter = 1000 mL, so 1.5 × 1000 = 1500 mL.
2. A patient is prescribed 500 mg of medication. How many grams is this?
A. 5 g
B. 0.005 g
C. 0.5 g
D. 50 g
Correct answer: C
Rationale: 1000 mg = 1 g; therefore, 500 mg = 500 ÷ 1000 = 0.5 g.
3. Convert 0.75 grams to milligrams.
A. 75 mg
B. 750 mg
C. 7.5 mg
D. 0.0075 mg
Correct answer: B
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Rationale: 1 g = 1000 mg; so 0.75 g × 1000 = 750 mg.
4. A medication dosage is ordered as 250 mcg. How many mg is this?
A. 0.25 mg
B. 2.5 mg
C. 0.025 mg
D. 25 mg
Correct answer: A
Rationale: 1000 mcg = 1 mg; so 250 mcg = 250 ÷ 1000 = 0.25 mg.
5. How many liters are in 2750 mL?
A. 0.275 L
B. 2.75 L
C. 2.75 L
D. 27.5 L
Correct answer: C
Rationale: 1000 mL = 1 L; therefore, 2750 ÷ 1000 = 2.75 L.
6. Convert 3.6 L into milliliters.
A. 360 mL
B. 3600 mL
C. 36,000 mL
D. 3,600,000 mL
Correct answer: B
Rationale: 1 L = 1000 mL; so 3.6 × 1000 = 3600 mL.
7. Convert 125 mg to micrograms.
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A. 125,000 mcg
B. 125,000 mcg
C. 12,500 mcg
D. 1,250 mcg
Correct answer: B
Rationale: 1 mg = 1000 mcg; 125 × 1000 = 125,000 mcg.
8. Convert 0.02 L to milliliters.
A. 20 mL
B. 200 mL
C. 2 mL
D. 0.2 mL
Correct answer: A
Rationale: 0.02 × 1000 = 20 mL.
9. How many grams are in 1500 mg?
A. 0.015 g
B. 1.5 g
C. 15 g
D. 0.15 g
Correct answer: B
Rationale: 1500 ÷ 1000 = 1.5 g.
10. A nurse needs to give 0.05 grams of a drug. How many milligrams should
be administered?
A. 0.5 mg
B. 5 mg
HESI A2 Metric Conversion Exam
Bank: 200 Practice Questions with
Rationales (mL, mg, mcg, L)
Table of Contents
Subtopic 1: Basic Metric Conversions (mL, mg, mcg, L)..................................2
Subtopic 2: Dosage Conversions in Clinical Scenarios (mL, mg, mcg, L).........8
Subtopic 3: Pediatric Dosage and Metric Unit Calculations............................14
Subtopic 4: Intravenous (IV) Fluid and Medication Conversions....................21
Subtopic 5: Advanced Unit Conversions and Dimensional Analysis...............27
Subtopic 6: Medication Reconstitution and Solution Preparation (mL, mg,
mcg, L)...........................................................................................................34
Subtopic 7: Metric Unit Conversions in Drug Label Interpretation.................40
Subtopic 8: Intravenous (IV) Solutions and Infusion Unit Conversions...........47
Subtopic 9: Pediatric Dosage Conversions and Fluid Calculations.................53
Subtopic 10: Advanced Clinical Calculations Involving Conversions..............60
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Subtopic 1: Basic Metric Conversions (mL, mg,
mcg, L)
Questions 1–20
1. How many milliliters are in 1.5 liters?
A. 105 mL
B. 1150 mL
C. 1500 mL
D. 1.5 mL
Correct answer: C
Rationale: 1 liter = 1000 mL, so 1.5 × 1000 = 1500 mL.
2. A patient is prescribed 500 mg of medication. How many grams is this?
A. 5 g
B. 0.005 g
C. 0.5 g
D. 50 g
Correct answer: C
Rationale: 1000 mg = 1 g; therefore, 500 mg = 500 ÷ 1000 = 0.5 g.
3. Convert 0.75 grams to milligrams.
A. 75 mg
B. 750 mg
C. 7.5 mg
D. 0.0075 mg
Correct answer: B
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Rationale: 1 g = 1000 mg; so 0.75 g × 1000 = 750 mg.
4. A medication dosage is ordered as 250 mcg. How many mg is this?
A. 0.25 mg
B. 2.5 mg
C. 0.025 mg
D. 25 mg
Correct answer: A
Rationale: 1000 mcg = 1 mg; so 250 mcg = 250 ÷ 1000 = 0.25 mg.
5. How many liters are in 2750 mL?
A. 0.275 L
B. 2.75 L
C. 2.75 L
D. 27.5 L
Correct answer: C
Rationale: 1000 mL = 1 L; therefore, 2750 ÷ 1000 = 2.75 L.
6. Convert 3.6 L into milliliters.
A. 360 mL
B. 3600 mL
C. 36,000 mL
D. 3,600,000 mL
Correct answer: B
Rationale: 1 L = 1000 mL; so 3.6 × 1000 = 3600 mL.
7. Convert 125 mg to micrograms.
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A. 125,000 mcg
B. 125,000 mcg
C. 12,500 mcg
D. 1,250 mcg
Correct answer: B
Rationale: 1 mg = 1000 mcg; 125 × 1000 = 125,000 mcg.
8. Convert 0.02 L to milliliters.
A. 20 mL
B. 200 mL
C. 2 mL
D. 0.2 mL
Correct answer: A
Rationale: 0.02 × 1000 = 20 mL.
9. How many grams are in 1500 mg?
A. 0.015 g
B. 1.5 g
C. 15 g
D. 0.15 g
Correct answer: B
Rationale: 1500 ÷ 1000 = 1.5 g.
10. A nurse needs to give 0.05 grams of a drug. How many milligrams should
be administered?
A. 0.5 mg
B. 5 mg
