Tools
Educational calculators and references for concentration math and measurement units. Each tool does one job and shows its work.
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.
HGH Tools
Tools and references built around HGH and somatropin measurement: the main reconstitution calculator, a concentration planner and a unit reference.
HGH Reconstitution Calculator Enter the vial amount and liquid volume to get the concentration, plus the volume and syringe units for an amount you enter, with an animated syringe. HGH Concentration Calculator Work backward: find the liquid volume that gives a target concentration for a known amount of substance. Measurement Unit Reference A lookup table of mass, volume and concentration units, plus what IU does and does not mean.
Reconstitution Tools
Concentration math for powders dissolved in liquid. One tool works forward (amount and volume to concentration); the other works backward (target concentration to liquid volume).
HGH Reconstitution Calculator Enter the vial amount and liquid volume to get the concentration, plus the volume and syringe units for an amount you enter, with an animated syringe. HGH Concentration Calculator Work backward: find the liquid volume that gives a target concentration for a known amount of substance.
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.
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.
Reference Tools
Quick-lookup pages for measurement units, prefixes and label terminology.