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Research Tool

Dose Conversion Calculator

Convert peptide vial mg to mcg to exact U-100 syringe units. Free, printable and works on any device.

Dose Conversion Calculator

Convert mg vials + BAC water + target dose (mcg) into exact U-100 syringe units.

Concentration
3.33 mg/mL · 3333.3 mcg/mL
Draw volume
0.075 mL
Syringe units (U-100)
7.5 units
Doses per vial
~40
Quick unit reference
  • 1 mg = 1,000 mcg
  • 1 mL = 100 units on a U-100 insulin syringe
  • 1 unit = 0.01 mL
  • IU depends on compound — HCG uses ~1 IU ≈ 1 mcg only as a rough guide; check each peptide.

How the conversion works

Every peptide dose calculation is one equation: dose ÷ concentration = volume. Concentration is the total peptide (in mcg) divided by the volume of bacteriostatic water you added (in mL). Once you know the volume in mL, multiply by 100 to get U-100 syringe units.

Worked example: a 10 mg vial reconstituted with 3 mL of BAC water — the default used across this library — has a concentration of 3,333 mcg/mL. A 250 mcg dose is 250 ÷ 3,333 = 0.075 mL, which is 7.5 units on a U-100 insulin syringe.

For the sterile technique and BAC water sourcing behind these numbers, see the Ultimate Guide to Peptide Reconstitution. For vial mg values you can trust, use suppliers who publish batch-specific HPLC CoAs like PeptidesUK4U.