Research tools
Draw the exact dose.
Work out how many syringe units to draw for a target dose, based on your vial strength, bacteriostatic water, and syringe size. A calculation aid for research use, not medical advice.
How to use it
Step-by-step instructions
Step 1: Select your syringe
Choose 0.3ml, 0.5ml, or 1ml — this sets how many units the scale represents.
Step 2: Enter the vial quantity
Pick a preset or enter the total milligrams on the vial label.
Step 3: Enter the bac water added
How much bacteriostatic water you mixed into the vial, in millilitres.
Step 4: Specify the desired dose
Enter the target dose in milligrams or micrograms.
Step 5: Read the result
The calculator shows exactly how many units to draw for that dose.
Your dosage
Draw to 4 units
Draw exactly 4 units (0.04ml) for a dose of 100mcg.
Questions
Calculator FAQ
It converts a vial strength, a bacteriostatic water volume, and a target dose into the number of syringe units (IU) to draw, using the standard U-100 syringe markings.
No. This tool is a research aid for calculating reconstitution math — it is not medical advice, and does not replace guidance from a qualified professional.
0.3ml, 0.5ml, and 1ml syringes, marked in the standard 100-units-per-millilitre scale printed on most insulin-style syringes.
Yes — every field has a Custom option that reveals a plain number input for vial quantity, bac water, and desired dose.