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Blue-lit laboratory vials
Understand your concentration

Peptide Calculator

Convert peptide amounts and solution volume into concentration, millilitres and syringe units for your selected scale.

Enter Your Vial Details

mg
Total amount on the vial label.
mL
Volume after reconstitution.
Enter the prescribed amount of peptide for one dose in mcg or mg. The calculator will show the equivalent volume in mL and syringe units.
Match the scale printed on your syringe. U-100: 1 unit = 0.01 mL.
Capacity is the total volume the syringe holds; it does not change its scale.

Use the confirmed final volume from the product instructions or your pharmacist.

Your Conversion

EXAMPLE ONLY
5 U-100 units

= 0.05 mL

for the entered dose of 250 mcg

Volume on Your Syringe

Illustration only—check your syringe’s actual markings. The marker shows the calculated value without rounding to a tick; tick spacing varies by syringe.
5 mg/mLSolution concentration
50 mcgAmount per U-100 unit

Syringe units measure volume on a U-100 scale. They are not milligrams or units of peptide activity.

Illustrative numbers only; not a recommended dose.

Understanding Your Numbers

mg & mcg

These measure the amount of peptide. One milligram equals 1,000 micrograms.

mL

This measures liquid volume. Concentration connects the amount of peptide to that volume.

Syringe scale & capacity

U-100: 1 unit = 0.01 mL. U-40: 1 unit = 0.025 mL. For mL markings, read the volume directly. Capacity does not change these conversions.

How the conversion is calculated

Concentration (mg/mL) = vial amount (mg) ÷ final solution volume (mL). Volume (mL) = entered amount (mg) ÷ concentration. Syringe units = volume (mL) × the selected scale (100 for U-100; 40 for U-40). mL-only mode reports volume without unit conversion. Results are rounded for display, not to a syringe graduation. Syringe scale reference (B. Braun).

Educational arithmetic only. This tool does not determine an appropriate dose, product suitability, diluent, preparation method or administration instructions. Confirm medication calculations and measurement precision with a pharmacist or prescriber. Not intended for multi-ingredient blends. Why clear units matter.