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Peptide Reconstitution & Concentration Calculator
Accurate research peptide concentration, reconstitution and dilution calculations for lyophilised peptides. In vitro laboratory use only.
Result Peptide weight: mg Bacteriostatic water: mL Required sample size: mcg Volume required: mL Graduated units: IU
Warning, the selected syringe size is too small for this measure. Consider reducing the water volume for compatibility in a research setting.
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 volume to measure and graduated units for common U-100 laboratory syringes.
Also referred to as a peptide concentration calculator, peptide reconstitution calculator, peptide dilution calculator, or research peptide calculator — it converts mg↔mL and mcg↔IU and suggests easy measurement points for typical research vials.
Example 1: 10mg peptide vial
Scenario: 10mg peptide, want 250 mcg sample
Recommendation: Add 2mL bacteriostatic water
Result: Measure 0.05mL (5 IU) for ~250 mcg sample
Example 2: 5mg peptide vial
Scenario: 5mg peptide, want 500 mcg sample
Recommendation: Add 1mL bacteriostatic water
Result: Measure 0.1mL (10 IU) for ~500 mcg sample
For in vitro research use only. Illustrative measurement scenarios — not human or veterinary guidance.
BPC-157 5mg
Vial: 5mg lyophilised BPC-157
Reconstitution: 2mL bacteriostatic water → 2.5 mg/mL
250 mcg research sample: measure 0.1mL (10 IU)
TB-500 5mg
Vial: 5mg lyophilised TB-500
Reconstitution: 2mL bacteriostatic water → 2.5 mg/mL
500 mcg research sample: measure 0.2mL (20 IU)
GHK-Cu 50mg
Vial: 50mg lyophilised GHK-Cu
Reconstitution: 5mL bacteriostatic water → 10 mg/mL
1 mg research sample: measure 0.1mL (10 IU)
CJC-1295 2mg
Vial: 2mg lyophilised CJC-1295
Reconstitution: 2mL bacteriostatic water → 1 mg/mL
100 mcg research sample: measure 0.1mL (10 IU)
How do I reconstitute lyophilised peptides?
Add bacteriostatic water slowly to your peptide vial. Use the calculator to determine the volume needed for your intended concentration. For in vitro research only.
What syringe size is shown?
U-100 graduated syringes, selectable as 0.3 mL, 0.5 mL, or 1 mL.
How do I convert mg to mcg?
1 mg equals 1000 mcg. The calculator keeps both in sync.
What’s the difference between mL and IU?
mL is volume. IU are unit markings on U-100 graduated syringes where 1 mL equals 100 IU.
Does this calculator support BPC-157, TB-500, GHK-Cu and other research peptides?
Yes — it works with any lyophilised peptide. Select the vial size in mg, enter the bacteriostatic water volume and your required sample size. Output is for in vitro laboratory research only.
What's a research peptide concentration calculator?
A research peptide concentration calculator converts your vial weight (mg) and bacteriostatic water volume (mL) into a concentration (mg/mL), then helps you measure a target sample size on a U-100 graduated syringe. Also called a peptide reconstitution calculator, dilution calculator, or research peptide calculator.