Nursing Unit Converter: mcg, mg, g, kg, lb, mL, L
Most dosage errors start with a unit. Pick what you have and what you need; the calculator shows the factor and whether to multiply or divide.
Shows the work. Answer, formula, and numbered steps, rounded the way nursing exams expect. For study and exam practice, not for patient care.
Formula
Multiply or divide by the conversion factor.
Fill in the fields and press Calculate to see the answer and every step.
For study and exam practice, not for patient care.
Rounding: Metric conversions are exact, to at most 4 decimal places. Pounds to kilograms round to the tenth; household measures to the hundredth.
Terms: mcg, Leading and trailing zeros
Worked examples
Convert a 100 mg dose to grams.
- Value
- 100 mg
- To
- g
Formula Multiply or divide by the conversion factor.
- 1 g = 1,000 mg, so divide by 1,000.
- 100 ÷ 1,000 = 0.1 g.
- 0.1 g is exact, so no rounding is needed.
Answer 0.1 g
A client weighs 176 lb. What is the weight in kg?
- Value
- 176 lb
- To
- kg
Formula Multiply or divide by the conversion factor.
- kg = lb ÷ 2.2.
- 176 ÷ 2.2 = 80 kg.
- 80 kg is exact, so no rounding is needed.
Answer 80 kg
FAQ
How do you convert mg to mcg?
Multiply by 1,000: 1 mg = 1,000 mcg. To go from mcg to mg, divide by 1,000.
How do you convert pounds to kilograms?
Divide pounds by 2.2: 1 kg = 2.2 lb. To go from kg to lb, multiply by 2.2.
How many mL are in a teaspoon?
For medication dosing, 1 teaspoon = 5 mL and 1 tablespoon = 15 mL. Use an oral syringe or dosing cup, not a kitchen spoon.