Peptide Calculator

Simple unit conversions and draw amounts for lab measurement.

1) Syringe size

2) Peptide amount (in the vial)

3) Amount you want (target)

4) Mixing liquid added

Concentration
—
How strong the mix is.
Draw amount
—
How much liquid to draw.
Syringe units (U-100)
—
1 mL = 100 units on a U-100 syringe.
Quick conversions
1 mg = 1000 mcg
1 unit = 0.01 mL (U-100)
This tool provides simple conversions and draw amounts for laboratory measurement.

Lyophilised peptides are supplied as a dry powder and are reconstituted by dissolving them into a measured volume of liquid.

The volume you choose directly determines the final concentration:

  • Adding less liquid results in a stronger concentration

  • Adding more liquid results in a weaker concentration

This calculator uses the values you enter to calculate the final concentration and converts it into an exact draw amount, displayed in both millilitres and U-100 syringe units.

There are no fixed settings — changing any input instantly updates the result.

The examples below show how different inputs affect concentration and draw volume. These are illustrative calculations only.

Example 1
Peptide amount: 10 mg
Liquid volume: 2 mL
Target amount: 250 mcg
Result: 0.05 mL (5 units on a U-100 syringe)

Example 2
Peptide amount: 5 mg
Liquid volume: 1 mL
Target amount: 500 mcg
Result: 0.1 mL (10 units on a U-100 syringe)

Example 3
Peptide amount: 2 mg
Liquid volume: 1 mL
Target amount: 100 mcg
Result: 0.05 mL (5 units)

These examples demonstrate how the same target amount can require different draw volumes depending on concentration.

  • 1 mg = 1000 micrograms (mcg)

  • 1 mL = 100 units on a U-100 syringe

  • 1 unit = 0.01 mL

Concentration (mcg/mL) shows how much peptide is present in each millilitre of liquid.

Draw amount (mL / units) shows the exact volume required to measure your selected target amount based on the final concentration.