The calculator is a unit converter, not a dose selector.
The calculator starts from a target amount and the vial size you confirm, then checks supported whole-mL dilutions on a U-100 scale. Named pages leave the target field blank until you enter the amount from your own instructions. An instructed liquid volume can be entered in the same calculator card. This page shows the formula and limits so the output can be checked independently.
The formula
- 1
Concentration
vial amount in mg ÷ liquid volume in mL = mg/mL
- 2
Convert micrograms when needed
instructed mcg ÷ 1,000 = instructed mg
- 3
Liquid volume
instructed mg ÷ concentration in mg/mL = mL
- 4
Syringe-unit conversion
mL × 100 U-100 units per mL = displayed units
Worked arithmetic example
This is deliberately compound-neutral and is not a preparation recommendation.
10 mg ÷ 2 mL = 5 mg/mL
If an independently supplied instruction were 1 mg, the volume would be 1 ÷ 5 = 0.2 mL. On a scale defined as 100 units per mL, 0.2 × 100 = 20 displayed units.
Changing any input changes the result. The example does not establish that a vial should contain 10 mg, use 2 mL, or be used at a 1 mg amount.
Instructed water volumes
If your product documentation or licensed professional gives a water volume, enter it in the instructed-volume field. That value takes priority over the calculator's whole-mL arithmetic options.
Entering an instructed volume does not turn the calculator into preparation advice; it only applies the same concentration and unit-conversion formula to that value.
U-100 scale boundary
The displayed conversion assumes 100 units equals 1 mL. Confirm the physical syringe is U-100 and can hold the displayed volume before using the arithmetic.
Mark spacing and capacity vary by syringe. This calculator does not choose a syringe, instruct rounding, or validate the markings on the one in your hand.
Assumptions
- The vial amount has been copied accurately from the label.
- The calculator tests supported whole-mL volumes and uses a U-100 scale.
- A suggested result of less than 5 or more than 100 U-100 units is not presented as practical.
- The instructed amount uses the correct mg or mcg unit.
- Any entered instructed liquid volume matches the product documentation or licensed-professional guidance.
- The product is intended to be prepared in the way described by its instructions.
Do not use the result when
- The label, concentration, units, or product form are unclear.
- The result exceeds the selected syringe capacity.
- The product instructions conflict with any entered value.
- You are using the calculator to choose an amount or alter a preparation.
Private by default
The arithmetic runs in your browser and does not require an account. If you choose "Track this vial in the app," the values are sent only to a first-party endpoint that seals them in a short-lived encrypted token. AppsFlyer receives the opaque token, not the peptide, vial, water, target, or source-page values.