Tools & Calculators
Harm-reduction calculators for PK analysis, PCT planning, and body composition. The [detection-time estimator](/tools/detection-time) shows metabolite windows, the [peak-trough estimator](/tools/peak-trough) predicts steady-state levels, and the [PCT planner](/pct-planner) estimates compound clearance. All tools work offline and store nothing server-side.
Vial Label Generator
Print a clear label for a reconstituted vial — concentration, dates, notes.
Dosing-Unit Converter
Convert insulin units, mcg/mg, mg/kg, and HCG IU.
Needle / Syringe Selector
Pick a gauge and syringe from the dose volume and fluid type.
Injection-Site Tracker
Log injections and rotate sites to protect tissue health.
Bloodwork Tracker
Log labs over time and trend against reference ranges.
Interaction Checker
Check your stack against a curated compound × supplement/Rx interaction dataset.
AI / SERM Reference
Symptom/E2 scenarios → the category of approach (reference, not dosing advice).
Side-Effect Triage
Symptom → likely cause, suggested bloodwork, and when to seek care.
PCT Planner
Estimate compound clearance timing and a representative PCT protocol.
Half-Life Plotter
Visualize compound concentration over time with harm-reduction overlays.
Compound Comparison
Overlay pharmacokinetic curves and compare compounds side by side.
Peak / Trough Estimator
Predict peak and trough levels, and the best window to draw trough bloodwork.
Clearance / Washout Calculator
Estimate when levels drop below a threshold after the last dose.
Detection-Time Estimator
Estimate how long an anabolic stays above a detection threshold (doping-control context).
Testosterone Unit Converter
Convert between ng/dL, nmol/L, pg/mL for total and free testosterone.
Free & Bioavailable T Calc
Calculate free and bioavailable testosterone using the Vermeulen formula.
BMR Calculator
Calculate your basal metabolic rate (Mifflin-St Jeor).
TDEE Calculator
Find your total daily energy expenditure and maintenance calories.
Body Fat Calculator
Estimate body fat percentage using the US Navy tape method.
Cutting Calculator
Calculate calorie deficit targets for fat loss.
Bulking Calculator
Calculate calorie surplus targets for muscle gain.