Measurement calculator

Peptide Calculator

Enter your vial amount, liquid volume and target amount. See the calculated volume and U-100 equivalent, with every step explained.

Calculates: Calculate concentration, target volume, U-100 marking and theoretical portions from your vial and target values.
You provide: Vial mass, liquid volume, target mass and the U-100 scale
Returns: Concentration, target volume, U-100 marking, amount per unit and theoretical portions

ResultsVisible result and formula trace.

Calculated in browser

Enter your values to see the math.

Awaiting values

Enter values and calculate. The result appears here and every step appears in the Formula Inspector below.

How this calculator works

This tool connects mass, concentration and volume in one calculation. The target amount is a value you supply, not one selected by PeptiCompute. Select mg or mcg for each mass and explicitly acknowledge the U-100 scale before calculating.

Formula

Concentration = vial mass ÷ liquid volume. Target volume = target mass ÷ concentration. U-100 marking = volume × 100.

Arithmetic example — not a recommendation

For an arithmetic example only, 5 mg in 2 mL gives 2,500 mcg/mL. A user-entered target of 250 mcg corresponds to 0.1 mL and 10 U-100 units. The mass ratio is 20 theoretical portions.

Scope and assumptions

The calculation assumes a uniform solution and the entered final liquid volume. It does not account for loss, purity, stability, equipment precision or the suitability of any amount.

Mass is normalized to mcg; volume stays in mL. Where shown, U-100 means 100 scale units per mL. Read all formulas and precision rules.

Questions about this tool

Is this a peptide dosage calculator?

People use that phrase to find mass-and-volume arithmetic. This calculator does not choose a dose. You must already have the source values and target amount; the output is their mathematical relationship.

What are theoretical portions?

Total vial mass divided by the target mass you entered. This is a ratio that may be fractional, without accounting for material loss. It is not a schedule or a count of administrations.