Peptide Concentration & Dilution Calculator
Work out stock-solution concentration (mg/mL) and the aliquot volume for a target mass of lyophilised research peptide. In vitro laboratory use only.
Vial contents (mg)
Required aliquot
Solvent volume to add
Select Compound
Choose the compound you want to calculate.
Vial & Reconstitution
Enter the vial size and amount of bacteriostatic water.
Desired Dose
Enter the amount you want to calculate.
Your Calculation
Review the calculated values below.
These results are mathematical calculations based on the values entered above. Always verify product-specific instructions and use appropriate professional guidance.
📖 Peptide calculator info
This free peptide calculator helps researchers work out reconstitution, concentration and sample size in the lab — including for BPC-157, TB-500, GHK-Cu, CJC-1295 and other lyophilised peptides used in in vitro studies. Enter your vial amount in mg, your mixing water in mL and a required sample size in mcg or mg. The tool returns the stock concentration in mg/mL and the transfer volume in mL and microlitres.
Also referred to as a peptide concentration calculator, peptide dilution calculator, peptide dilution calculator, or research peptide calculator — it converts mg to mg/mL and returns aliquot volumes in mL and microlitres for typical research vials.
🔢 Quick conversions
💡 Peptide reconstitution examples
Example 1: 10mg peptide vial
Scenario: 10mg peptide, want 250 mcg sample
Suggested solvent volume: Add 2 mL solvent
Result: Transfer 0.05mL (50 µL) for ~250 mcg sample
Example 2: 5mg peptide vial
Scenario: 5mg peptide, want 500 mcg sample
Suggested solvent volume: Add 1 mL solvent
Result: Transfer 0.1mL (100 µL) for ~500 mcg sample
🧪 Common research peptide examples
For in vitro research use only. Illustrative measurement scenarios — not human or veterinary guidance.
BPC-157 5mg
Vial: 5mg lyophilised BPC-157
Stock solution: 2 mL solvent → 2.5 mg/mL
250 mcg aliquot: transfer 0.1mL (100 µL)
TB-500 5mg
Vial: 5mg lyophilised TB-500
Stock solution: 2 mL solvent → 2.5 mg/mL
500 mcg aliquot: transfer 0.2mL (200 µL)
GHK-Cu 50mg
Vial: 50mg lyophilised GHK-Cu
Stock solution: 5 mL solvent → 10 mg/mL
1 mg aliquot: transfer 0.1mL (100 µL)
CJC-1295 2mg
Vial: 2mg lyophilised CJC-1295
Stock solution: 2 mL solvent → 1 mg/mL
100 mcg aliquot: transfer 0.1mL (100 µL)
❓ Frequently asked questions
How do I reconstitute lyophilised peptides?
Enter the vial contents in mg and the solvent volume in mL; the tool returns the resulting stock concentration in mg/mL. Solvent selection and all handling are determined by the receiving laboratory under its own protocols. For in vitro research only.
What volume units are shown?
Transfer volumes are given in millilitres and microlitres (1 mL = 1000 µL).