Peptide Calculator — Reconstitution, Mixing & Concentration Tools
A free, mobile-friendly research peptide calculator for UK laboratories. Work out reconstitution concentrations, mix two solutions, convert between mg and ml, and total up working volumes — every result shows the full calculation. For laboratory and in-vitro research use only.
Enter the amount of lyophilised peptide in the vial and the volume of bacteriostatic water you plan to add. The reconstitution calculator returns the resulting concentration and how much solution corresponds to a chosen research draw amount.
Combine two reconstituted solutions to find the resulting concentration. Enter the volume and concentration of each solution.
Convert between concentration, volume and mass. Enter a solution concentration and the volume drawn to see the amount of peptide it contains.
Add the individual component volumes of a mixture to get the total working volume. Leave any unused rows blank.
These calculators are provided as a general laboratory reference for research workflows only. They do not constitute dosing, medical or administration advice. All MyPep Biotech products are supplied strictly for laboratory and in-vitro research use and are not for human consumption. For preparation and storage guidance, see our reconstitution guide, peptide storage guide and bacteriostatic water guide.
Peptide Calculator FAQ
What is a peptide reconstitution calculator?
A peptide reconstitution calculator works out the concentration of a lyophilised (freeze-dried) research peptide after adding a chosen volume of bacteriostatic water, and how much solution corresponds to a target research amount. It removes manual arithmetic errors when preparing solutions in the laboratory.
How do I use the peptide calculator?
Enter the milligrams of peptide in your vial, the millilitres of bacteriostatic water you are adding, and your target draw amount in micrograms. The calculator returns the concentration in mg/ml and mcg/ml, the volume to draw, and the equivalent units on a U-100 insulin syringe, with full step-by-step working shown.
What does mg/ml mean?
mg/ml is milligrams of peptide per millilitre of solution. It is the standard way to express concentration after reconstitution. Multiplying mg/ml by 1000 gives the concentration in micrograms per millilitre (mcg/ml), which is often more convenient for small research amounts.
Which diluent should I use to reconstitute a peptide?
Bacteriostatic water is the diluent most commonly referenced in research protocols for reconstituting lyophilised peptides, because the added benzyl alcohol helps limit microbial growth in multi-use vials. See our Bacteriostatic Water guide for handling and storage information.
Peptide Calculator formula and verification
This peptide calculator applies dimensional arithmetic to the values entered in the browser. Concentration is calculated as material amount divided by total volume; a target-volume calculation rearranges that relationship. Results are mathematical outputs, not instructions for human or veterinary administration.
Always confirm the unit attached to every value and independently reproduce the calculation in the laboratory record. The BIPM SI Brochure is the authoritative international reference for SI units. The NIST Guide for the Use of the International System of Units provides additional unit-expression guidance.
The calculator cannot validate material identity, purity, density, solubility, stability, container accuracy or suitability for a particular model. Use calibrated equipment, apply the laboratory’s approved procedure and document rounding. See the calculation guide and research handling guide.
Worked reconstitution example
Example only: if a 10mg research vial is combined with 2mL of diluent, the concentration is 5mg/mL. A 0.1mL measured volume therefore contains 0.5mg. Always confirm vial strength, diluent volume and unit conversion before recording a calculation.
Use the reconstitution calculator guide for the formula and handling context, and consult the BIPM guidance on measurement units. This calculator is an educational laboratory tool, not medical advice.