The peptide calculator suite
33 tools that cover ~95% of peptide math in one place. Built for biohackers, athletes, and researchers who want exact answers, not spreadsheets.
On a GLP-1? Every GLP-1 calculator in one placeDose escalator, vial transition, protein and water targets, and cost per pound, on one hub.Reconstitution Chart Generator
Generate a printable quick-reference table mapping peptide doses (mcg) to syringe units and volume (mL). Perfect for taping to the fridge or keeping in your kit.
Open tool→Reconstitution Calculator
Forward and reverse modes. Forward: how many units to draw. Reverse: how much BAC water to add. U-100, U-50, U-40, 1 mL syringes.
Open tool→GLP-1 Dose Escalator
Titration tables for Ozempic®, Wegovy®, Mounjaro®, Zepbound®, and Retatrutide. Outputs weekly mg, mL, and U-100 units from a compounded vial.
Open tool→Peptide Blend Calculator
Two or more peptides reconstituted in one vial. We pick the limiting component and tell you exactly how much of each you'll receive per draw. CJC/Ipa, BPC/TB-500, and custom blends.
Open tool→Unit Converter
mcg ↔ mg ↔ mL ↔ insulin units ↔ IU. Presets for HGH, hCG, insulin, plus a custom mg/IU ratio.
Open tool→Vial Life Calculator
Total doses in a vial, run-out date, and whether your BAC water shelf-life will get there first. Six dosing-frequency presets.
Open tool→Taper Schedule Generator
Step, linear, or geometric taper for any compound. Titrate up (GLP-1, retatrutide) or ramp down (MK-677, hexarelin).
Open tool→Half-Life Decay Visualizer
Overlay multiple peptides on one timeline. See exactly what's still active in your system right now, CJC vs Ipa vs tirzepatide vs whatever you're on.
Open tool→TDEE Calculator
Estimate maintenance calories and macros from your stats and activity level using Mifflin-St Jeor or Katch-McArdle, with cut, maintain, and lean-bulk targets.
Open tool→Medication Storage Calculator
Predict peptide stability days remaining based on storage temperature and reconstitution state. Covers lyophilized and reconstituted peptides with per-diluent windows.
Open tool→PK Concentration Curve
Plot predicted plasma concentration, peak, trough, and steady state for any dosing regimen.
Open tool→Intranasal Spray Calculator
Convert peptide concentration to per-spray dose, sprays per dose, and doses per bottle. Supports mg/mL or mcg/mL, unilateral or bilateral dosing, with a per-spray cumulative dose table.
Open tool→Injection Site Rotation Map
Visual body map to track and rotate subQ injection sites, with heat-map recency overlay.
Open tool→BAC Water Volume Optimizer
Reconstitution math in reverse. Find BAC water volumes that land your draw on a clean syringe mark. Supports U-100, U-50, and U-40 syringes.
Open tool→Fasting Window Calculator
Plan pre-dose and post-dose fasting windows for GH-axis peptides. Covers CJC-1295, Ipamorelin, GHRP-2, GHRP-6, and custom compounds.
Open tool→GH Stack Dose Splitter
Two peptides, one vial: compute per-draw delivery for each compound and spot ratio mismatches before they cost you a dose.
Open tool→Retatrutide Titration Calculator
TRIUMPH-4 titration math for compounded retatrutide, week by week. Inputs your vial concentration, outputs draw size and current week.
Open tool→Supply Cost Calculator
Enter the vial cost; see exact price per dose, per week, and per cycle. Useful before you compare vendors.
Open tool→Peptide Sequence Property Calculator
Paste a one-letter amino-acid sequence: molecular weight, theoretical pI, net charge across pH, GRAVY hydropathy, and the 280 nm extinction coefficient.
Open tool→Ideal Weight Calculator
Ideal body weight from height and sex via the Devine, Robinson, Miller, and Hamwi formulas, plus the healthy BMI weight range. Kilograms or pounds.
Open tool→Body Fat Percentage Estimator
Estimate body fat from tape measurements with the US Navy circumference method, alongside a BMI-based Deurenberg estimate for comparison.
Open tool→GLP-1 Vial Transition Calculator
Switching compounded GLP-1 vial concentrations? Hold the same weekly mg dose and see how the draw volume and U-100 units change.
Open tool→GLP-1 Protein Target Calculator
Daily protein target ranges to help preserve lean mass during GLP-1 weight loss, from your bodyweight and goal.
Open tool→GLP-1 Water Intake Calculator
A bodyweight-based daily water estimate, useful on GLP-1 therapy where reduced appetite can quietly cut fluid intake.
Open tool→GLP-1 Cost per Pound Calculator
Track cost efficiency: total spent divided by weight lost, shown as cost per pound and per kilogram. Currency-agnostic.
Open tool→Free & Bioavailable Testosterone Calculator
Estimate free and bioavailable testosterone from total T, SHBG, and albumin with the Vermeulen equation, matched to the ISSAM calculator.
Open tool→Reverse GLP-1 Dose Calculator
Convert syringe units back to milligrams (mg) and micrograms (mcg) for compounded GLP-1 peptides. Based on vial mass and BAC water volume.
Open tool→GLP-1 Fiber Intake Calculator
Estimate your daily fiber target while on GLP-1 therapy to support regularity and satiety during appetite suppression.
Open tool→HGH / IU Dosage Calculator
Convert HGH vial IU strength and BAC water volume into U-100 syringe units. Calculate exact draw volume and doses per vial.
Open tool→GLP-1 Pen Click Calculator
Convert a desired mg dose into mechanical pen clicks for adjustable or compounded GLP-1 pens. Includes mg-per-click and actual dose variance.
Open tool→GLP-1 Split-Dose Scheduler
Divide a total weekly dose into smaller, more frequent administrations. Useful for illustrative math when discussing off-label dosing patterns.
Open tool→Peptide Cycle Planner
Plan your supply logistics. Compute the total peptide needed for a cycle duration, or estimate how long your current supply will last.
Open tool→Protocol Cost & Supply Timeline
Combined cost and supply timeline. Calculate price per week and exact run-out date for your protocol in one view.
Open tool→Educational use only
This calculator is provided for research and educational purposes. Outputs are derived from the values you enter. Always verify your math and consult a licensed physician before acting on any result.