Research tools / 01
Peptide calculator.
A peptide reconstitution calculator for mass and volume arithmetic. Enter your own laboratory measurements to calculate concentration and U-100 scale units.
Your measurements. Clear results.
Use a single component with a known mass. This calculation assumes the final solution volume equals the water added. It does not determine solvent suitability or vial capacity.
Enter all three measurements to calculate.
- Concentration
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- Mass per U-100 unit
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- Draws per vial
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- Complete draws
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Research use only. This tool converts user-entered mass and volume; it provides no recommended amount, protocol, administration instructions or medical advice. U-100 units are volume graduations (100 units = 1 mL), not International Units (IU). It does not account for transfer loss or dead space.
How the calculation works
Concentration in mg/mL = vial mass in mg ÷ final volume in mL. A U-100 graduation is 0.01 mL, so mass per unit in mcg = concentration × 10. Volume per draw = desired mass ÷ concentration.
Dividing the total vial mass by the desired mass gives the theoretical number of draws. Actual recovery depends on the laboratory method and transfer losses.
Keep the units distinct
1 mg equals 1,000 mcg. U-100 graduations measure volume. Biological activity expressed in IU cannot be converted to mg without a material-specific, validated activity factor.
For blends, verify every component separately. This calculator does not model mixed compositions, stability, sterility, solubility or storage requirements.
Read the worked concentration example