Unit Converters
Plain metric converters for mass (g, mg, mcg) and volume (L, mL, µL). IU is deliberately not converted here, because it has no universal mass equivalent.
Educational use only
This site shows arithmetic and explains terminology. It never recommends doses, amounts or schedules, and it does not give medical advice. Any volume it shows is arithmetic on numbers you entered yourself. Follow the official product labeling and the instructions of a licensed healthcare professional or pharmacist. See the Medical Disclaimer.
Tools in this category
mg to mcg Converter Convert between grams, milligrams and micrograms in either direction. mL to µL Converter Convert between liters, milliliters and microliters in either direction. Measurement Unit Reference A lookup table of mass, volume and concentration units, plus what IU does and does not mean.
Helpful guides
mg vs mcg Explained The difference between milligrams and micrograms, how to convert between them, and the thousand-fold mistakes to avoid. Measurement Understanding International Units (IU) Why IU is a measure of biological activity rather than mass, and why an IU to mg factor must come from the specific product. Measurement