Free tool

Reconstitution calculator

Enter the vial amount, the bacteriostatic water you add, and the dose you want to study. It shows exactly how many units to draw on a U-100 insulin syringe — the same math the coach uses when it models a research protocol.

Reconstitution

live · real math

Draw to

on a U-100 syringe

10units

2,500

mcg/mL

0.1

mL/dose

20

doses/vial

Show the math
  1. Concentration2,500 mcg/mL

    vial mg ÷ water mL × 1,000

    5 mg ÷ 2 mL × 1,000

  2. Volume per dose0.1 mL

    dose mcg ÷ concentration

    250 mcg ÷ 2,500 mcg/mL

  3. Units to draw10 units

    mL per dose × 100

    0.1 mL × 100

  4. Doses per vial20 doses

    vial mcg ÷ dose mcg (rounded down)

    5,000 mcg ÷ 250 mcg

Calculated, not guessed — the same math the app and coach use. Double-check it yourself.

Double-check the math yourself. For research and informational purposes only.

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