Get the numbers right, the first time.
Free, private calculators for the math you do before every dose. Everything runs in your browser — nothing you enter is sent anywhere or saved. For tracking & education only; they never recommend a dose.
Peptide Reconstitution Calculator
Turn vial strength, BAC water, and your prescribed dose into the exact units to draw — with a visual syringe and a reverse "how much water" mode.
Open calculator →GLP-1 Dose Calculator
Reconstitute compounded semaglutide or tirzepatide into syringe units. Keeps compounded and manufactured-pen products clearly separate.
Open calculator →TRT Dose Calculator
Convert a prescribed weekly testosterone dose and ester concentration into the mL and insulin units per injection.
Open calculator →HCG Reconstitution Calculator
Reconstitute HCG in International Units and read off the units to draw on a U-100 syringe.
Open calculator →Split Dose Calculator
Split a weekly total across the injections you have chosen, then convert each one into syringe units.
Open calculator →Intranasal Dose Calculator
Work out mcg per spray and how many sprays make up your dose from a nasal-spray bottle.
Open calculator →Peptide Blend Calculator
Two or more peptides in one shared vial: see the single syringe draw and how many mcg of each component it delivers.
Open calculator →GLP-1 Titration Planner
Put your prescriber's titration steps into a dated, editable week-by-week schedule — and, for compounded vials, the units to draw at each step.
Open calculator →Testosterone Vial Longevity
Enter your vial and weekly dose to see usable doses, weeks of supply, and cost per week — with the math shown.
Open calculator →Free Testosterone Calculator
Estimate free and bioavailable testosterone from your own labs — total T, SHBG, and albumin — with the Vermeulen equation.
Open calculator →Low-T Screening (ADAM)
The published 10-item ADAM questionnaire for symptoms of androgen deficiency — a screen, never a diagnosis.
Open calculator →Half-Life Visualizer
Watch how a single dose decays by half-life, plus optional steady-state accumulation. A simplified, population-average model.
Open calculator →Medication Storage / Beyond-Use Dating
Pick your product (or use your own label) and the date you opened it to get the discard-by date and days remaining, with the source cited.
Open calculator →TDEE Calculator
Estimate your basal metabolic rate and total daily energy expenditure from the Mifflin–St Jeor equation, with an optional protein target.
Open calculator →