Health Calculators
Evidence-based tools to track and improve your physical wellbeing.
BMI Calculator
Calculate your Body Mass Index and understand your weight category.
Water Intake Calculator
Find out how much water you should drink daily.
Calorie Calculator
Estimate your daily calorie needs based on your goals.
Blood Type Calculator
Determine possible blood types based on parental genetics.
Body Fat % Calculator
Estimate your body fat percentage using measurements.
Carbohydrate Calculator
Calculate your daily carbohydrate intake requirements.
Nutrition Calculator
Get a full macronutrient breakdown for your diet.
A1C to Blood Sugar Calculator
Convert A1C percentage to average blood glucose levels.
Due Date Calculator
Estimate your pregnancy due date from conception or LMP.
NAFLD Fibrosis Score Calculator
Assess liver fibrosis risk in non-alcoholic fatty liver disease.
Peptide Dosage Calculator
Calculate accurate peptide dosages from vial concentrations.
Ideal Weight Calculator
Find your ideal body weight range for your height and frame.
Blood Alcohol Content (BAC) Calculator
Estimate your blood alcohol concentration after drinking.
Basal Metabolic Rate (BMR) Calculator
Calculate calories your body burns at complete rest.
MCG to IU Converter
Convert micrograms to International Units for vitamins and hormones.
Body Surface Area (BSA) Calculator
Calculate total body surface area for medication dosing.
VO2 Max Calculator
Estimate your maximum aerobic capacity and fitness level.
Glomerular Filtration Rate (GFR) Calculator
Estimate kidney filtration rate and chronic kidney disease stage.
Ovulation Calculator
Predict your most fertile days and ovulation window.
Protein Intake Calculator
Determine your daily protein needs based on weight and activity.
Fiber Intake Calculator
Calculate recommended daily fiber intake for your age and sex.
mmol/L to mg/dL Calculator
Convert blood glucose between mmol/L and mg/dL units.
Mean Arterial Pressure (MAP) Calculator
Calculate average arterial pressure from systolic and diastolic.
Total Daily Energy Expenditure (TDEE) Calculator
Calculate total calories burned per day including activity level.
Transferrin Saturation Calculator
Assess iron stores using serum iron and TIBC values.
Glucose Ketone Index (GKI) Calculator
Calculate your metabolic health ratio for ketogenic states.
AST/ALT Ratio Calculator
Calculate liver enzyme ratio to help identify liver conditions.
Army Body Fat Calculator
Estimate body fat using the US Army circumference method.
U.S. Navy Body Fat Calculator
Estimate body fat using the US Navy tape measurement method.
CHA2DS2-VASc Score Calculator
Assess stroke risk in patients with atrial fibrillation.
Lean Body Mass Calculator
Calculate fat-free mass from your weight and body fat percentage.
Creatinine Clearance (CrCl) Calculator
Estimate kidney function using the Cockcroft-Gault equation.
Waist-to-Height Ratio (WHtR) Calculator
Assess cardiometabolic risk using waist circumference and height.
Keto Calculator
Calculate your personalized keto macros for fat loss or maintenance.
Corrected Calcium Calculator
Adjust serum calcium levels for albumin concentration.
Glasgow Coma Scale (GCS) Calculator
Score neurological function using the Glasgow Coma Scale.
Biological Age Calculator
Discover your true biological age based on sleep, exercise, diet, and stress.
Sleep Chronotype Calculator
Find your chronotype — Lion, Bear, Wolf, or Dolphin — and get your ideal sleep schedule.
Cortisol Stress Score Calculator
Estimate your HPA axis cortisol load from sleep, caffeine, stress, exercise, and resting heart rate.
Metabolic Age Calculator
Find your metabolic age and efficiency score based on body fat, waist size, VO2 max, and activity level.
Gut Health Score Calculator
Assess your gut microbiome health and get a diversity estimate and food recommendations based on diet, fiber, bloating, antibiotics, and sugar.
Insulin Resistance Risk Calculator
Calculate your insulin resistance risk from waist size, fasting glucose, triglycerides, sleep, and diet. Get a metabolic risk profile and personalized recommendations.
Sleep Debt Calculator
Measure your accumulated weekly sleep debt, get a recovery sleep plan with target bedtimes, and see ideal bedtime adjustments for every night of the week.
Vitamin Deficiency Risk Calculator
Assess your risk for Vitamin D, B12, and Iron deficiency from diet, sun exposure, skin tone, symptoms, and supplements. Get risk scores, lab guidance, and recommendations.
Muscle Gain Potential Calculator
Discover your natural muscle ceiling based on height and wrist size. Get your FFMI score, remaining gain potential, and estimated timeline to your genetic limit.
Longevity Score Calculator
Get your longevity score out of 100 and an estimated lifespan from sleep, exercise, stress, diet, and body fat. See your biggest opportunity to add years to your life.
Detox Time Calculator
Get your personalised detox and withdrawal timeline for alcohol, caffeine, nicotine, sugar, cannabis, or opioids — with phases, symptoms, and evidence-based tips.
Cholesterol Ratio Calculator
Calculate your LDL/HDL cholesterol ratio and cardiovascular risk tier from your lipid panel. Includes Total/HDL ratio, risk gauge, and personalised advice.
Heart Rate Zone Calculator
Get your personalised 5-zone training heart rate ranges using the Karvonen method. Enter your age and resting HR to see fat-burn zone, cardio zone, and all 5 training zones.
Fat Intake Calculator
Get personalised daily fat targets — total fat, saturated fat maximum, monounsaturated, polyunsaturated, omega-3, and omega-6 recommendations — based on your stats and diet style.
Ozempic Dosage Calculator
Calculate your weekly Ozempic (semaglutide) injection volume, pen type, and titration schedule based on your prescribed dose.
Kidney Failure Risk Calculator
Estimate your 2-year and 5-year probability of kidney failure using the validated Kidney Failure Risk Equation (KFRE) with age, sex, eGFR, and uACR.
Body Roundness Index Calculator
Calculate your Body Roundness Index (BRI) — a next-generation central obesity metric using waist and height. More accurate than BMI at predicting visceral fat and cardiometabolic risk.
Intermittent Fasting Calculator
Generate your personalized IF schedule. Choose from 16:8, 18:6, 20:4, OMAD, 5:2, and more. Get exact eating and fasting window times, autophagy estimates, and evidence-based fasting tips.
LDL Cholesterol Calculator
Calculate LDL cholesterol using the Friedewald or Martin-Hopkins equation, or enter a direct LDL. Get your LDL category, non-HDL, VLDL, LDL/HDL ratio, triglyceride status, and tips to lower LDL naturally.
Other Calculators
Mortgage Payment Calculator
Calculate your monthly mortgage payment with full PITI breakdown, PMI estimation, rate comparison, and a year-by-year amortization schedule.
Ontario Mortgage Calculator
Ontario, Canada mortgage calculator. Uses Canadian semi-annual compounding, calculates CMHC insurance, Ontario and Toronto land transfer taxes with first-time buyer rebates, and closing costs.
Alberta Mortgage Calculator
Alberta, Canada mortgage calculator. Uses Canadian semi-annual compounding, calculates CMHC insurance, Alberta Land Titles Act fees — Alberta has no provincial land transfer tax.
Extra Payment Mortgage Calculator
See how extra mortgage payments reduce your loan term and total interest. Supports monthly extra, yearly lump sum, and one-time payments. Shows interest saved, time saved, ROI, balance chart, and full amortization.
Mortgage Refinance Calculator
Calculate your monthly savings, break-even point, and total interest saved from refinancing. Enter current balance, current rate, new rate, new term, and closing costs.
Car Payment Calculator
Calculate your monthly car payment. Enter vehicle price, down payment, trade-in, APR, and loan term to get your monthly payment, total interest, APR comparison, and full amortization schedule.
Compound Interest Calculator
See how your money grows with compound interest. Enter principal, rate, time, and monthly contributions to get future value, total interest earned, effective annual rate, doubling time, and a year-by-year breakdown.
Running Pace Calculator
Calculate your running pace, finish time, or distance. Get split times per km or mile, race predictions for 5K, 10K, half marathon, marathon and more, effort zone, and speed conversions. Supports km and miles.
"If I Invested Earlier" Wealth Calculator
See how much wealth you'd have at retirement if you started investing at 20, 25, 30, 35, or 40. Calculate your missed wealth opportunity, the true cost of waiting, wealth milestone ages, and future projections with compound interest.
FIRE Calculator
Calculate your FIRE number and years to Financial Independence, Retire Early. Supports Lean, Regular, Fat, and Barista FIRE with savings rate impact table, portfolio growth projection, Coast FIRE detection, and customizable safe withdrawal rate.
Smoke Cost Calculator
See how much you spend and could save by quitting smoking.
AI Token Cost Calculator
Compare AI API token costs across 30+ models from OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek, and more. Enter your token volume and input/output ratio to find the cheapest model for your use case.
Income Tax Calculators
Estimate your provincial income tax with our easy-to-use calculators.
Ontario Income Tax Calculator
Calculate your Ontario provincial and federal income taxes.
Alberta Income Tax Calculator
Calculate your Alberta provincial and federal income taxes.
New York Tax Calculator
Calculate your New York state and city income taxes.
California Tax Calculator
Calculate your California state income taxes.