Health Tools & Medical Calculators Engine
Evidence-based health calculators calibrated for South Asian populations, WHO cutoffs, and DGHS clinical protocols. Calculate BMI, pediatric medication dosage, glucose conversions, target heart rates, and pregnancy milestones.
Available Health Calculators
51 tools listedBMI & Ideal Weight Calculator
WHO South Asian CutoffsCalculate your exact Body Mass Index (BMI), Robinson ideal weight range, and minimum daily hydration target based on WHO South Asian health criteria.
Exact Age & Chronometry Calculator
Timezone-Safe Calendar MathFind your exact age in years, months, days, total hours, and get a precise countdown to your next birthday with leap year handling.
Pregnancy Due Date & Week Tracker
Naegele's Rule + Cycle AdjustmentCalculate your Estimated Due Date (EDD), current gestational week, trimester progress, and schedule for essential ultrasound scans.
Blood Sugar & HbA1c Converter
mmol/L ↔ mg/dL + ADA 2024Instantly convert blood glucose between mmol/L and mg/dL, calculate estimated HbA1c %, and check ADA fasting/post-meal risk stages.
Calorie, BMR & TDEE Calculator
Mifflin-St Jeor EquationCalculate your Basal Metabolic Rate (BMR), Total Daily Energy Expenditure (TDEE), and safe daily calorie targets for weight loss or gain.
Blood Pressure Stage Checker
AHA/ACC 2017 GuidelinesCheck your blood pressure category (Normal, Elevated, Stage 1, Stage 2, or Crisis) and Mean Arterial Pressure (MAP) with crisis alert triage.
Mean Arterial Pressure (MAP) Calculator
Perfusion & Vascular IndexCalculate your Mean Arterial Pressure (MAP) and Pulse Pressure to evaluate vital organ perfusion and vascular resistance.
Daily Water Intake Calculator
Climate & Weight RatioCalculate your body's optimal daily hydration target in liters and glasses adjusted for weight, exercise, and tropical Bangladesh climate.
Menstrual Period & Cycle Tracker
Cycle Projection & Phase TrackingPredict your next period date, cycle phases, and track menstrual regularity with privacy and clinical gynecological guidance.
Ovulation & Fertile Days Calculator
Luteal Phase CalibrationCalculate your exact ovulation day and 6-day fertile window to maximize your chances of natural conception.
Safe Period Calculator
Calendar Rhythm MethodCalculate your natural safe period days and low-risk windows using the calendar rhythm method for natural family planning.
Pediatric Napa & Paracetamol Dosage Calculator
BNFC Standard (15 mg/kg)Calculate precise, safe pediatric paracetamol (Napa/Ace) dosage based on your child's exact weight for drops, syrups, and suppositories.
Baby Exact Age & Milestone Calculator
WHO & CDC Developmental MilestonesCalculate your baby's exact age in weeks, months, and days with WHO developmental milestones and Bangladesh immunization schedule tracking.
Body Fat Percentage Calculator
US Navy Circumference MethodCalculate your body fat percentage, fat mass, and lean mass using the clinical US Navy circumference method.
Lean Body Mass (LBM) Calculator
Boer & James Clinical FormulasCalculate your exact lean body mass and fat-free tissue using Boer and James clinical anthropometric formulas.
Waist-to-Hip Ratio (WHR) Calculator
WHO South Asian Cutoffs (<0.90 / <0.85)Calculate your waist-to-hip ratio (WHR) to assess abdominal fat distribution and cardiovascular disease risk by WHO benchmarks.
Waist-to-Height Ratio (WHtR) Calculator
Ashwell Shape Chart (<0.50 Golden Rule)Calculate your waist-to-height ratio with the Ashwell golden rule: keep your waist to less than half your height to avoid early cardiometabolic disease.
Ideal Body Weight (IBW) Calculator
Robinson, Miller, Devine & HamwiCalculate your ideal healthy weight range using Robinson, Miller, Devine, and Hamwi clinical formulas alongside WHO South Asian BMI standards.
Basal Metabolic Rate (BMR) Calculator
Mifflin-St Jeor & Harris-BenedictCalculate your Basal Metabolic Rate (BMR)—the exact minimum daily calories your body burns at complete rest to sustain vital organs.
Total Daily Energy Expenditure (TDEE) Calculator
PAL Physical Activity MultipliersCalculate your Total Daily Energy Expenditure (TDEE) based on your lifestyle, exercise, and metabolic rate to budget your exact calories.
Daily Protein Requirement Calculator
DRI Clinical & CKD GuidelinesCalculate your optimal daily protein intake in grams based on body weight, fitness goals, and renal safety floors.
Blood Sugar Level & Glycemic Checker
BIRDEM & ADA 2024 GuidelinesCheck your blood sugar level for Fasting (FBS), 2-hour Postprandial, or Random (RBS) against ADA and BIRDEM clinical diagnostic thresholds.
HbA1c to eAG Blood Sugar Converter
Nathan et al. ADA FormulaConvert your HbA1c percentage into Estimated Average Glucose (eAG) in mg/dL and mmol/L to understand your 3-month glycemic control.
Cholesterol Ratio Calculator (Total/HDL)
AHA/ACC Atherogenic Index (<5.0)Calculate your Total Cholesterol to HDL ratio to evaluate atherogenic plaque risk and cardiovascular health based on AHA/ACC guidelines.
Non-HDL Cholesterol Calculator
Atherogenic Particle BurdenCalculate your Non-HDL cholesterol by subtracting protective HDL from total cholesterol to measure total circulating atherogenic particles.
Triglyceride to HDL Ratio Calculator
Surrogate Marker for Insulin ResistanceCalculate your TG/HDL ratio—a validated clinical surrogate biomarker for insulin resistance, metabolic syndrome, and dense LDL particles.
Target Heart Rate (THR) & Zones Calculator
Tanaka & Karvonen FormulasCalculate your maximal heart rate and 5 personal cardiovascular exercise zones (Warm-up, Fat Burn, Aerobic, Anaerobic, VO2 Max).
Heart Rate Recovery (HRR) Calculator
Vagal Reactivation & Cardiac IndexMeasure how rapidly your heart rate drops 1 minute after exercise to assess autonomic parasympathetic reactivation and cardiovascular safety.
Smoking Pack-Years Calculator
USPSTF Lung Cancer Screening CriteriaCalculate your lifetime cumulative tobacco exposure in pack-years and assess eligibility for annual Low-Dose CT (LDCT) lung cancer screening.
Conception Date Calculator
Gestational ChronometryCalculate your exact conception date and 5-day fertile intercourse window based on due date, last menstrual period, or ultrasound.
Pregnancy Weight Gain Tracker
IOM & ACOG Clinical CurvesTrack your gestational weight gain curves week by week based on your pre-pregnancy BMI to prevent preeclampsia and gestational diabetes.
Pregnancy Weeks & Trimester Tracker
Fetal Milestones & Ultrasound RoadmapTrack your pregnancy week by week with fetal milestones, trimester progression, clinical ultrasound schedule, and delivery countdown.
IVF & Embryo Transfer Due Date Calculator
Blastocyst Day 5 & Day 3 TransferCalculate your exact estimated delivery date (EDD) and gestational progress following a Day 5 blastocyst, Day 3 embryo, or egg retrieval transfer.
Pregnancy Blood Volume Expansion Calculator
Plasma Expansion & Anemia NadirCalculate your body's maternal blood and plasma volume expansion during gestation to evaluate physiological dilutional anemia risks.
Pediatric Growth & Weight Percentile Tracker
WHO Child Growth Standards (0-5 Years)Assess your infant or toddler's weight-for-age, growth curve, and nutritional status against World Health Organization (WHO) international benchmarks.
Child Target Adult Height Predictor
Tanner Mid-Parental Height FormulaPredict your child's adult genetic target height and expected range based on the clinical Tanner Mid-Parental Height equation.
Pediatric Maintenance Fluid Calculator
Holliday-Segar 100/50/20 & 4-2-1 RuleCalculate precise 24-hour maintenance fluid requirements and hourly infusion rates for infants and children using the clinical Holliday-Segar rule.
Kidney eGFR & CKD Stage Calculator
2021 CKD-EPI Race-Neutral FormulaEstimate your glomerular filtration rate (eGFR) and chronic kidney disease stage from serum creatinine using the 2021 CKD-EPI race-neutral equation.
Creatinine Clearance (CrCl) Calculator
Cockcroft-Gault EquationCalculate creatinine clearance (CrCl) using the Cockcroft-Gault equation for clinical renal drug dosage adjustments and kidney function monitoring.
Corrected Calcium Calculator
Payne's Albumin-Adjusted FormulaCalculate corrected serum calcium level adjusted for low or high albumin using Payne's equation to accurately detect hypo- or hypercalcemia.
Serum Osmolality & Osmolar Gap Calculator
Critical Care Osmolar EquationCalculate calculated serum osmolality, effective osmolality (tonicity), and osmolar gap to evaluate hyponatremia and toxic alcohol ingestion.
Corrected Sodium for Hyperglycemia
Katz (1.6) & Hillier (2.4) FormulasCalculate true corrected serum sodium during episodes of marked hyperglycemia (DKA/HHS) using Katz and Hillier clinical correction factors.
Fractional Excretion of Sodium (FENa) Calculator
Acute Kidney Injury (AKI) DifferentiationDifferentiate pre-renal azotemia from acute tubular necrosis (ATN) in acute kidney injury using the Fractional Excretion of Sodium (FENa) percentage.
Serum Anion Gap & Albumin Correction Calculator
Metabolic Acidosis & FIGLU/MUDPILESCalculate serum anion gap with albumin correction to accurately evaluate high anion gap metabolic acidosis (HAGMA) versus normal anion gap acidosis.
Adult Maintenance Fluids & Hydration Calculator
NICE Guidelines & 4-2-1 RuleCalculate adult daily IV maintenance fluid volume, hourly infusion rate, and electrolyte needs based on NICE guidelines and the 4-2-1 rule.
CHA2DS2-VASc Atrial Fibrillation Stroke Score
ESC & AHA Atrial Fibrillation GuidelinesCalculate your CHA2DS2-VASc score to estimate annual ischemic stroke and thromboembolism risk in non-valvular atrial fibrillation.
HAS-BLED Bleeding Risk Calculator
Major Anticoagulation Bleeding RiskCalculate your HAS-BLED clinical score to estimate the 1-year risk of major bleeding for patients receiving oral anticoagulants or blood thinners.
MELD & MELD-Na Liver Disease Score
UNOS 2016 End-Stage Liver DiseaseCalculate your MELD and MELD-Na scores to assess end-stage liver disease severity and 90-day survival using Bilirubin, INR, Creatinine, and Sodium.
Child-Pugh Score for Cirrhosis Mortality
Classes A, B, and C Liver StagingCalculate your Child-Pugh score (Class A, B, or C) to assess chronic cirrhosis severity, decompensation, and 1- to 2-year survival probabilities.
CURB-65 Pneumonia Severity Score
BTS British Thoracic Society RulesCalculate your CURB-65 pneumonia severity score to determine 30-day mortality risk and hospital versus home outpatient admission triage.
Wells' Score for Deep Vein Thrombosis (DVT)
Pre-Test Probability & Doppler UltrasoundCalculate Wells' criteria score to determine clinical pre-test probability for deep vein thrombosis (DVT) and guide D-dimer or ultrasound testing.