Peptide calculator: reconstitution, BAC water and syringe units
Work out concentration, syringe units per draw and cost per draw from the vial size, the final solution volume and the research aliquot you want to measure.
Enter the vial size, the final solution volume and the amount you want to measure to see the conversion. Nothing is preselected.
Peptide reconstitution chart
Concentration for common vial sizes and final solution volumes, and how much material one unit (0.01 mL) on a U-100 syringe holds. These are conversions, not dosing recommendations.
| Vial | 1 mL final volume | 2 mL final volume | 3 mL final volume |
|---|---|---|---|
| 2 mg | 2 mg/mL 20 mcg per unit | 1 mg/mL 10 mcg per unit | 0.67 mg/mL 6.67 mcg per unit |
| 5 mg | 5 mg/mL 50 mcg per unit | 2.5 mg/mL 25 mcg per unit | 1.67 mg/mL 16.7 mcg per unit |
| 10 mg | 10 mg/mL 100 mcg per unit | 5 mg/mL 50 mcg per unit | 3.33 mg/mL 33.3 mcg per unit |
| 15 mg | 15 mg/mL 150 mcg per unit | 7.5 mg/mL 75 mcg per unit | 5 mg/mL 50 mcg per unit |
| 20 mg | 20 mg/mL 200 mcg per unit | 10 mg/mL 100 mcg per unit | 6.67 mg/mL 66.7 mcg per unit |
| 30 mg | 30 mg/mL 300 mcg per unit | 15 mg/mL 150 mcg per unit | 10 mg/mL 100 mcg per unit |
| 50 mg | 50 mg/mL 500 mcg per unit | 25 mg/mL 250 mcg per unit | 16.7 mg/mL 166.7 mcg per unit |
How the peptide calculator works
Enter the mass of material in milligrams, the final solution volume in millilitres and the mass in the research aliquot you want to measure. The calculator converts those inputs into concentration and aliquot volume. It does not select an amount for an experiment.
- Concentration (mg/mL) = mass (mg) ÷ final volume (mL).
- Aliquot volume (mL) = target mass (mg) ÷ concentration (mg/mL).
- U-100 scale conversion = aliquot volume (mL) × 100. This is a volume scale, not a measure of biological activity.
- Cost per aliquot = the matching vial price ÷ the calculated number of aliquots.
Illustrative calculation
For a hypothetical 10 mg sample in a final volume of 2 mL, concentration is 5 mg/mL. A user-specified 1 mg research aliquot corresponds to 0.2 mL, or 20 on a U-100 volume scale. These example inputs are not dosing recommendations.
Limits of the result
Results assume a homogeneous solution and the mass entered. They do not account for assay uncertainty, displacement, transfer losses, degradation or container dead space. Use final solution volume, which may differ from the volume of solvent added. Blends require component-specific calculations.
Cost is shown only when the entered mass matches the selected price quote. Changing vial size does not make a price for another size applicable. Listed prices exclude shipping unless stated otherwise.