Peptology. Calculators
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Guides · Calculators

Work out the draw before you open the vial.

Reconstitution with the water to draw and the syringe reading, how many vials a plan needs, and unit conversions. The syringes move to your answer, and the arithmetic is printed under every result so you can check it.

Peptide (optional)
Pick from our list to fill the vial size, or type the numbers yourself.
Insulin syringe (U-100), for the draw
U-100 means 100 units fill 1 mL. A unit on the syringe is a volume (0.01 mL), not a weight.
Water syringe (luer), for mixing
The water is measured with a larger syringe. We pick the smallest one that holds it; tap to choose another.
Draw to
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Step 1 · Measure the water3 mL luer · 0.1 mL lines

Step 2 · Draw the amount0.5 mL · 50 units · 1-unit lines
Magnified at the reading
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mL to draw
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Concentration
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In 1 unit
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Full draws per vial
Note

What these calculators do not decide

They convert, they do not prescribe

They turn an amount you have already chosen into a volume, a syringe reading or a vial count. They do not choose an amount, a schedule or whether a compound suits any purpose. Peptology research compounds are supplied for research use only, not for human or veterinary use.

Read the syringe, then check it

The reading is taken at the front edge of the rubber stopper, the edge nearest the needle. New to syringe scales? Read the syringe guide. Planning a schedule? Open the protocol planner.