Lab tool
Molarity calculator
The relationship is mass = concentration × volume × molecular weight. Fill in any three fields and the fourth is calculated for you.
mass (g) = concentration (mol/L) × volume (L) × molecular weight (g/mol)
Shown on every product page — e.g. BPC-157 is 1419.55 g/mol.
Use a comma or a point for decimals.
Solving for: Mass
Result
1.41955 µg
Leave one field blank and it will be calculated from the other three.
Background reading
Guides behind this calculation
Moles, Molarity and mg/mL: The Arithmetic Behind Peptide Concentrations
Three equations, one division each — plus the salt-content correction that quietly inflates every figure derived from a vial label.
Handling & storageReconstitution Maths: Three Formulas Behind Every Peptide Calculator
Concentration, draw volume, syringe units. Check any calculator by hand in a minute and see exactly where thousandfold errors creep in.
Handling & storageAliquoting Peptide Solutions: Volumes, Losses, Containers and Procedure
Splitting a stock trades a calculable transfer loss for the end of repeated freeze-thaw. Where the trade pays off, where it does not, and…
Handling & storageReconstituting Lyophilized Peptides: A Lab Procedure With Worked Numbers
Three variables decide whether a stock is trustworthy — which diluent, how much of it, and how gently the cake is dissolved. Here is the…