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Reconstitution calculator.

Enter vial strength, bacteriostatic water, and the desired research amount. Concentration, draw volume, and U-100 syringe units update instantly, with the math shown in full.

U-100
Insulin syringe scale
0
Guesswork
COA
Batch-verified inputs
A UU.LIFE peptide vial with unmixed powder beside a bacteriostatic water vial of clear liquid, floating on a studio backdrop.

Your inputs

U-100 syringe units

5units

Draw volume

0.05ml

Concentration

5mg/ml

Amounts per vial

40x 250 mcg

020406080100

Fill an insulin syringe to this mark.

Transparent math

  • Vial mcg = vial mg x 1,000
  • Concentration mcg/ml = vial mcg / water ml
  • Draw ml = desired mcg / concentration mcg/ml
  • U-100 units = draw ml x 100
  • Amounts per vial = vial mcg / desired mcg

10,000 mcg / 2 ml = 5,000 mcg/ml.
250 mcg / 5,000 mcg/ml = 0.05 ml.
0.05 ml x 100 = 5 U-100 units.

For laboratory research planning only. Products are not for human or veterinary use, and this calculator does not provide medical advice.

Quick reference

Common vial-and-water pairings and the U-100 units that land a 250 mcg research amount. Always confirm against your own inputs above.

Vial strengthWaterConcentrationU-100 units
5 mg1 ml5.0 mg/ml5 units
5 mg2 ml2.5 mg/ml10 units
10 mg2 ml5.0 mg/ml5 units
10 mg3 ml3.3 mg/ml7.5 units
20 mg2 ml10.0 mg/ml2.5 units
30 mg3 ml10.0 mg/ml2.5 units

Assumes a 250 mcg desired amount. Concentrations shown as mg/ml.

New to reconstitution?

The full step-by-step guide covers supplies, clean handling, adding water without foaming, storage, and drawing measured amounts.

Read the vial guide