Pharmaceutical Unit Converter
Easily convert between different pharmaceutical units: milligrams, grams, micrograms, milliliters, drops, and international units.
Important Medical Disclaimer
This calculator is an educational and clinical decision support tool. Results DO NOT replace professional medical evaluation, laboratory tests, or clinical judgment. Always consult a qualified healthcare professional for diagnosis, treatment, and clinical decisions. Calculations are based on scientifically validated formulas but may not be applicable to all patients.
Convert Units
Note: Drop and mL conversions assume standard concentration (1mg/mL). Always check drug label for accurate conversions.
What is the Pharmaceutical Unit Converter?
The converter facilitates conversion between different units of measurement used in pharmacy and nursing. Allows conversion of weight (mg, g, mcg, kg), volume (mL, L, drops), and international units (IU). It is essential for dosage calculations, dilutions, and medication administration. Attention: IU conversions depend on the specific drug (e.g., insulin, heparin, vitamins).
Common Conversions
Quick reference table:
- 1 g = 1.000 mg
- 1 mg = 1.000 mcg (µg)
- 1 kg = 1.000 g = 1.000.000 mg
- 1 L = 1.000 mL
- 20 gotas ≈ 1 mL (varia por viscosidade)
- 1 colher de chá ≈ 5 mL
- 1 colher de sopa ≈ 15 mL
Limitations and Important Considerations
This converter performs standard mathematical conversions. However, in pharmaceutical practice: 1) Drops vary by liquid viscosity (20 drops/mL is approximation); 2) IU (International Units) cannot be directly converted to mg/mL without knowing the specific drug (each IU of insulin ≠ IU of heparin); 3) Always consult drug label for accurate conversions; 4) Conversion errors can be fatal - double checking is mandatory.
Frequently Asked Questions about Unit Conversion
How many drops in 1 mL?
The general rule is 20 drops = 1 mL, but this varies by liquid viscosity and dropper type. Aqueous solutions generally follow this rule, but oils and syrups may have 15-18 drops/mL. Always check the drug label for specific conversion.
How to convert IU (International Units)?
IU cannot be directly converted to mg/g/mL without knowing the specific drug. Each substance has its own IU definition based on biological activity. Example: 100 IU of regular insulin = 1mL of U-100 insulin, but this does not apply to other drugs. Always consult the label.
What is the difference between mcg and µg?
None. mcg and µg are just different symbols for micrograms (1 millionth of a gram). mcg is preferred in prescriptions because µg can be confused with mg in handwriting, which can cause a 1000-fold error in dose.
How to calculate drug dilution?
Use the formula: C1 × V1 = C2 × V2, where C=concentration and V=volume. Example: dilute 5mL of 10mg/mL solution to 2mg/mL: 10×5 = 2×V2, so V2=25mL (add 20mL of diluent). Always confirm diluent compatibility on the label.