Free resources · Dosage calculations
Metric conversions
Converting between grams, milligrams and micrograms before you calculate.
Worked example: learn the method
Ungraded teaching example with different numbers from the practice exercise. For study only, not clinical use.
Convert 2 g to mg.
1 g = 1,000 mg · 1 mg = 1,000 mcg
- Choose the conversion factor: 1 g = 1,000 mg, so multiply by 1,000.
- Apply it: 2 × 1,000 = 2000 mg
- Sense-check: Moving to a smaller unit gives a larger number.
Example result: 2000 mg. Give the exact converted value.
Common mistake to avoid: Check which unit is larger before moving the decimal. Converting to a smaller unit increases the numerical value.
Dosage formulas · Unit conversion reference
These are practice problems for exam preparation. Every number in them is generated by CARE for teaching purposes — nothing here is a real order and nothing here is a clinical dosing tool. Do not use this page to work out a dose for a real patient: use your facility's policy, the actual order, and an independent double-check where your policy requires one.
Medication calculations also appear inside real exam practice, mixed with everything else and scored the same way. Try a free quiz drawn from the actual question bank.
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