Free Health Tools
Interactive calculators, reference charts, and printable logs. Reviewed by Dr. Taylor against the same evidence base used in clinical practice. No signup, no ads, no data sent anywhere — everything runs on your device.
Blood Pressure Log — Printable & Editable
Type your readings — each row auto-color-codes against current AHA categories (Normal / Elevated / Stage 1 / Stage 2 / Severe). Running averages, AM-vs-PM split, severe-reading warning, branded printable PDF, and an embeddable widget for clinics. Data stays on your device.
Open toolCelsius to Fahrenheit Converter
Type a temperature in either box — Celsius or Fahrenheit — and the other updates instantly. When the value is a body temperature, see exactly where it falls on the fever scale (Normal / Low-grade / Fever / High fever), with a printable °C–°F chart and an embeddable widget.
Open toolCholesterol Ratio Calculator
Five lipid metrics in one place — TC/HDL, LDL/HDL, TG/HDL, non-HDL, and the Atherogenic Index of Plasma — with AHA-cited bands, sex-specific targets, Friedewald LDL backfill, mg/dL ↔ mmol/L toggle, and a clinician-ready PDF log.
Open toolA1C Conversion Calculator
Convert A1C ↔ estimated average glucose (mg/dL & mmol/L) ↔ IFCC mmol/mol in any direction, live. Plus two markers no other A1C tool includes — GMI from your CGM's average glucose, and an approximate A1C from a fructosamine result — with ADA categories, a reading log, and a clinician-ready PDF.
Open toolBAC Calculator
Estimate blood alcohol content from what you drank, your weight, and time since your first drink — with a sober clock no other BAC calculator shows: an hour-by-hour decay chart and the approximate clock times you drop back under 0.08, 0.05, and 0.00. Handles custom drinks (real sizes and ABVs), never tells you it's 'safe to drive.'
Open toolCompression Sock Size Chart
Type your shoe size and calf measurement to see your compression sock size across 8 popular brands at once — VIM & VIGR, Sigvaris, Sockwell, FIGS, Doc Miller, Jobst, Mediven, OS1st — plus the right mmHg level for your reason.
Open toolFall Risk Assessment Tool
The CDC's Stay Independent 12-question screener as an interactive tool, with a built-in Timed Up-and-Go (TUG) timer, result-tied home-safety guidance, and a clinician-ready PDF log. For adults 65+ and the family members caring for them.
Open toolFat-Burning Heart Rate Calculator
Find your fat-burning zone (60–70% of max) by age — four formulas side-by-side (Standard, Tanaka, Karvonen, women-specific), a full 5-zone chart, a live-HR zone checker, and a printable cardio training log.
Open toolIron Studies Interpretation Chart
Type your ferritin, TSAT, and hemoglobin to instantly see which of the five iron-studies patterns your numbers match — Normal, Iron Deficiency, IDA, ACD, or Iron Overload. Demographic-adjusted bands for pregnancy, postmenopause, inflammation, and athletes.
Open toolIdeal Body Weight Calculator
Your ideal body weight by all four clinical formulas at once — Devine, Robinson, Miller, and Hamwi — plus the healthy-weight range, adjusted body weight, and % of IBW when you add your current weight. Save, share, and export a PDF.
Open toolLean Body Mass Calculator
Calculate LBM with Boer, James and Hume formulas side-by-side — or use your body-fat reading. Lean Mass Index against Schutz 2002 norms, daily protein target, fat-loss math, and a clinician-ready PDF log.
Open toolPrednisone Taper Schedule
Compare the five common prednisone tapers side-by-side — 5-day burst, 6-day dose pack, 12-day, 21-day, and 28-day — with day-by-day schedules, a start-date picker, and a printable PDF calendar. Each protocol is reproduced from a cited published source.
Open toolProtein Intake Calculator
How many grams of protein you need per day — five evidence-cited goals side-by-side (general/RDA, active, build muscle, lose fat, endurance), a sarcopenia-aware bump for age 65+, a per-meal breakdown against the muscle-synthesis window, real-food equivalents, and a printable intake log.
Open toolPulse Oximeter Reading Chart
Type your SpO₂ reading and instantly see the band, what it means, and what to do — adjustable for COPD, altitude, newborn, and athlete. Saves readings + exports a clinician-ready PDF.
Open toolTeaspoon to mL Converter
Convert teaspoons to milliliters and back instantly — type in either box, no button. Toggle between the metric teaspoon (5 mL, the medicine & label standard) and the US customary kitchen teaspoon (4.93 mL), with a built-in liquid-medicine dosing reference, printable chart, and embeddable widget.
Open toolSteps to Miles Calculator
Convert steps to miles + calories with three stride methods. CDC activity-zone result, walking log, printable PDF.
Open toolWong-Baker FACES® Pain Scale
Tap the face that matches your pain. Saves a session log and exports a clinician-ready PDF.
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