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Health & Fitness Calculators
Free calculators for BMI, calories, body fat, fitness goals, and health metrics.
BMI Calculator Calculate your Body Mass Index (BMI) using weight and height. See your BMI categ
Calorie Calculator Calculate daily calorie needs based on age, gender, weight, height, and activity
Body Fat Calculator Calculate body fat percentage using the U.S. Navy method with waist, neck, and h
BMR Calculator Calculate your Basal Metabolic Rate using both Mifflin-St Jeor and Harris-Benedi
TDEE Calculator Calculate Total Daily Energy Expenditure based on BMR and activity level. Find y
Macro Calculator Calculate daily macronutrient targets — protein, carbs, and fat grams — based on
Ideal Weight Calculator Calculate your ideal body weight using Devine, Robinson, Miller, and Hamwi formu
Protein Calculator Calculate how much protein you need per day based on weight and fitness goals.
Pregnancy Calculator Calculate your due date, current trimester, and weeks pregnant based on your las
Due Date Calculator Calculate your baby's due date from last menstrual period or conception date. Se
Ovulation Calculator Calculate your ovulation date and fertile window based on your menstrual cycle l
Sleep Calculator Calculate optimal bedtimes based on your wake-up time and 90-minute sleep cycles
Water Intake Calculator Calculate how much water you should drink daily based on weight, activity level,
Heart Rate Calculator Calculate maximum heart rate and target training zones using the Karvonen method
Pace Calculator Calculate running or walking pace, speed, and predicted finish times from your d
Calories Burned Calculator Calculate calories burned during exercise based on activity type, duration, and
BAC Calculator Estimate blood alcohol content based on drinks consumed, body weight, gender, an
One Rep Max Calculator Estimate your one-rep max (1RM) from weight lifted and reps completed. See train
Height Calculator Predict a child's adult height using the mid-parental method. Enter parents' hei
Period Calculator Predict your next period date, fertile window, and ovulation day. Track cycle re
Blood Type Calculator Predict possible child blood types from parents using Punnett square genetics. C
Conception Calculator Estimate your conception date from your due date, actual birth date, or last men
Waist-to-Hip Ratio Calculator Calculate your waist-to-hip ratio (WHR) and assess cardiovascular and abdominal
Baby Growth Calculator Calculate your baby's weight and length percentiles by age using WHO/CDC growth
Pregnancy Weight Gain Calculator Calculate recommended pregnancy weight gain based on pre-pregnancy BMI using IOM
Body Surface Area Calculator Calculate body surface area (BSA) using Mosteller, DuBois, and Haycock formulas.
Cycling Calorie Calculator Calculate calories burned cycling based on weight, speed, duration, and terrain.
Keto Calculator Calculate your keto diet macros including daily calories, fat, protein, and net
Net Carbs Calculator Calculate net carbs by subtracting fiber and sugar alcohols from total carbohydr
Lean Body Mass Calculator Calculate lean body mass (LBM) from body fat percentage or using Boer, James, an
Fasting Calculator Calculate your intermittent fasting schedule for 16:8, 18:6, 20:4, OMAD, 5:2, an
Running Calorie Calculator Calculate calories burned running based on weight, distance, and pace. Includes
Blood Pressure Calculator Enter your systolic and diastolic readings to get your blood pressure category p
Walking Calorie Calculator Calculate calories burned walking based on weight, distance, and pace. Includes
Body Type Calculator Determine your body type (ectomorph, mesomorph, or endomorph) and frame size usi
Alcohol Calorie Calculator Calculate calories in alcoholic drinks including beer, wine, spirits, and cockta
Swimming Pace Calculator Calculate your swimming pace per 100 yards or meters, predict race times, plan s
Calorie Deficit Calculator Calculate the exact calorie deficit needed to reach your weight loss goal. Enter
Egg Freezing Calculator Calculate egg freezing costs, estimated eggs retrieved by age, viable eggs, and
IVF Cost Calculator Calculate total IVF cost including procedure, medications, PGT-A genetic testing
VO2 Max Calculator Calculate your VO2 max (maximal oxygen uptake) from a Cooper 12-minute run, 1.5
Body Recomposition Calculator Calculate your lean mass, fat mass, and target weight for body recomposition. Fi
Alcohol Unit Calculator Calculate UK alcohol units, US standard drinks, and calories in any drink. Track
GFR Calculator Calculate GFR and creatinine clearance using the Cockcroft-Gault equation. Get C
eGFR Calculator Calculate estimated GFR using the race-free CKD-EPI 2021 equation. Includes MDRD
Creatinine Clearance Calculator Calculate creatinine clearance (CrCl) using Cockcroft-Gault for drug dosing. Inc
A1C to Glucose Calculator Convert HbA1c to estimated average glucose (eAG) in mg/dL or mmol/L. Includes re
QT Interval Calculator Calculate corrected QT interval (QTc) using Bazett, Fridericia, and Hodges formu
APGAR Score Calculator Calculate newborn APGAR scores at 1, 5, and 10 minutes. Score appearance, pulse,
Pediatric Dose Calculator Calculate pediatric drug doses by weight (mg/kg) or body surface area (mg/m²). I
LDL Cholesterol Calculator Calculate LDL cholesterol using the Friedewald equation (TC – HDL – TG/5) or the
Mean Arterial Pressure Calculator Calculate mean arterial pressure (MAP) from systolic and diastolic blood pressur
Implantation Calculator Calculate your estimated implantation date from ovulation, LMP, or IVF transfer
hCG Doubling Time Calculator Calculate hCG doubling time from two beta hCG levels and days between tests. Ass
Waist-to-Height Ratio Calculator Calculate your waist-to-height ratio (WHtR) and assess cardiometabolic risk. A W
Pregnancy Weeks to Months Calculator Convert pregnancy weeks to months and find your trimester. Uses ACOG term defini
Postpartum Recovery Calculator Calculate your postpartum recovery timeline from your birth date. Get 2-week and
Wilks Calculator Calculate your Wilks score to compare powerlifting performance across different
DOTS Calculator Calculate your DOTS score — the 2020 powerlifting strength-scoring formula desig
IPF Points Calculator Calculate IPF GL Points — the International Powerlifting Federation official sco
VDOT Running Calculator Calculate your VDOT from any race time (mile through marathon). Get training pac
Marathon Pace Calculator Calculate your required marathon pace for any goal time. Get per-km and per-mile
Cycling FTP Calculator Calculate your Functional Threshold Power (FTP) from 20-minute test, 8-minute te
Cycling Power Zones Calculator Calculate all 7 Coggan cycling power training zones from your FTP. Includes Brit
Training Load Calculator Calculate TSS (Training Stress Score), CTL (fitness), ATL (fatigue), and TSB (fo
CHA₂DS₂-VASc Score Calculator Calculate CHA₂DS₂-VASc score for stroke risk in atrial fibrillation. Get annual
HAS-BLED Score Calculator Calculate HAS-BLED bleeding risk score for AFib patients on anticoagulation. Ide
GRACE Score Calculator Calculate the GRACE score for acute coronary syndrome mortality risk. Estimate i
TIMI Risk Score Calculator (UA/NSTEMI) Calculate the TIMI risk score for unstable angina and NSTEMI. Estimate 14-day MA
TIMI Risk Score for STEMI Calculate the TIMI risk score for STEMI. Estimate 30-day mortality risk using 8
ASCVD 10-Year Risk Calculator Calculate 10-year atherosclerotic cardiovascular disease (ASCVD) risk using the
Framingham Risk Score Calculator Calculate the Framingham 10-year coronary heart disease (CHD) risk score. Based
Ankle-Brachial Index (ABI) Calculator Calculate ankle-brachial index (ABI) to screen for peripheral artery disease (PA
Killip Class Calculator Determine Killip class for heart failure severity after acute myocardial infarct
NYHA Functional Classification Calculator Determine NYHA heart failure functional class (I-IV). Includes ACC/AHA Stage com
ROSE Rule Syncope Calculator Calculate the ROSE rule for syncope risk stratification in the emergency departm
Duke Treadmill Score (DTS) Calculator Calculate the Duke Treadmill Score from exercise stress test data. Formula: Exer
EuroSCORE II Calculator Calculate EuroSCORE II predicted in-hospital mortality for cardiac surgery. 18 r
CRUSADE Bleeding Score Calculator Calculate CRUSADE bleeding risk score for NSTEMI patients undergoing PCI. 8 vari
Mehran Score Calculator (Contrast-Induced Nephropathy) Calculate Mehran score for contrast-induced nephropathy (CIN) risk after PCI. 8
Modified Rankin Scale (mRS) Calculator Calculate the Modified Rankin Scale (mRS) for stroke outcome and neurological di
RCRI (Revised Cardiac Risk Index) Calculator Calculate RCRI (Lee Index) for perioperative cardiac risk before non-cardiac sur
ABCD² Score Calculator for TIA Stroke Risk Calculate ABCD² score for 2-day and 7-day stroke risk after transient ischemic a
NIH Stroke Scale (NIHSS) Calculator Calculate NIHSS (NIH Stroke Scale) score for ischemic stroke severity. 15 items,
Glasgow Coma Scale (GCS) Calculator Calculate Glasgow Coma Scale (GCS) score for traumatic brain injury severity ass
Peak Flow Calculator Calculate predicted Peak Expiratory Flow Rate (PEFR) using Nunn & Gregg formula
FEV1/FVC Ratio Calculator Calculate FEV1/FVC ratio for obstructive lung disease diagnosis. Fixed ratio <0.
BODE Index Calculator Calculate BODE Index for COPD prognosis: BMI, FEV1% predicted, mMRC dyspnea scal
CURB-65 Calculator Calculate CURB-65 score for community-acquired pneumonia (CAP) severity. Five cr
Asthma Control Test (ACT) Calculator Calculate ACT score for asthma symptom control. 5-item validated questionnaire s
A-a Gradient Calculator Calculate alveolar-arterial (A-a) oxygen gradient from ABG values. PAO2 = FiO2 ×
PSI/PORT Score Calculator Calculate Pneumonia Severity Index (PSI/PORT) for community-acquired pneumonia r
Wells PE Score Calculator Calculate Wells Score for pulmonary embolism (PE) pretest probability. 7 criteri
qSOFA (Quick SOFA) Calculator Calculate qSOFA score for rapid sepsis screening. Three criteria: RR ≥22, altere
SOFA Score Calculator Calculate full SOFA score for ICU organ dysfunction assessment. Six systems: Res
MDRD GFR Calculator Calculate MDRD-4 and MDRD-6 estimated GFR for CKD staging. Uses the 1999/2006 MD
FENa Calculator (Fractional Excretion of Sodium) Calculate fractional excretion of sodium (FENa%) to differentiate prerenal AKI f
FEUrea Calculator (Fractional Excretion of Urea) Calculate fractional excretion of urea (FEUrea%) to differentiate prerenal AKI f
Anion Gap Calculator Calculate serum anion gap (Na − Cl − HCO3) for metabolic acidosis workup. Includ
Albumin-Corrected Anion Gap Calculator Calculate albumin-corrected anion gap to unmask hidden HAGMA in hypoalbuminemic
Urine Osmolality Calculator Calculate urine osmolality from spot urine electrolytes: UOsm = 2×(UNa+UK) + Glu
HOMA-IR Calculator Calculate HOMA-IR (Homeostatic Model Assessment of Insulin Resistance) from fast
FINDRISC Calculator (Finnish Diabetes Risk Score) Calculate FINDRISC score (0–26) for 10-year Type 2 diabetes risk. Eight factors:
FRAX Fracture Risk Calculator Estimate 10-year probability of major osteoporotic fracture and hip fracture usi
Corrected Calcium Calculator Calculate albumin-corrected serum calcium: Corrected Ca = Total Ca + 0.8 × (4.0
Glucose Infusion Rate (GIR) Calculator Calculate glucose infusion rate for neonatal IV dextrose therapy. GIR = (Dextros
Westley Croup Score Calculator Calculate Westley Croup Score to assess croup severity in children. Five criteri
PEWS Pediatric Early Warning Score Calculator Calculate PEWS (Pediatric Early Warning Score) — 3 domains scored 0-3 each, tota
Pediatric Maintenance Fluids Calculator (4-2-1 Rule) Calculate pediatric IV maintenance fluid rate using the Holliday-Segar 4-2-1 rul
Pediatric BMI Percentile Calculator Calculate BMI percentile for children ages 2-20 using CDC growth charts. Underwe
New Ballard Score Calculator Calculate gestational age using the New Ballard Score (12 criteria: 6 neuromuscu
Bishop Score Calculator — Cervical Readiness for Labor Induction Calculate the Bishop Score to assess cervical ripeness before labor induction. S
Modified Bishop Score Calculator — Cervical Ripeness Assessment Calculate the Modified Bishop Score (Calder Score) to assess cervical readiness
Hadlock Fetal Weight Calculator — Estimated Fetal Weight (EFW) Calculate estimated fetal weight (EFW) using the Hadlock III formula from BPD, H
Amniotic Fluid Index (AFI) Calculator — Oligohydramnios & Polyhydramnios Calculate the Amniotic Fluid Index (AFI) by summing four-quadrant ultrasound poc
PHQ-9 Depression Screening Calculator Score the 9-item Patient Health Questionnaire (PHQ-9) to screen for depression s
GAD-7 Anxiety Screening Calculator Score the 7-item Generalized Anxiety Disorder scale (GAD-7) to screen for anxiet
AUDIT Alcohol Use Disorder Identification Test Score the WHO AUDIT 10-item questionnaire to screen for hazardous and harmful al
Fagerström Test for Nicotine Dependence (FTND) Score the Fagerström Test for Nicotine Dependence (FTND) to assess tobacco depen
Montreal Cognitive Assessment (MoCA) Score Calculator Calculate Montreal Cognitive Assessment (MoCA) scores across 8 cognitive domains
Mini-Mental State Examination (MMSE) Score Calculator Calculate the Mini-Mental State Examination (MMSE) score across 5 cognitive doma
Hamilton Depression Rating Scale Calculator (HAM-D 17) Clinician-rated Hamilton Depression Rating Scale (HAM-D 17) calculator. Score al
Morphine Equivalent Daily Dose (MEDD) Calculator Calculate total Morphine Equivalent Daily Dose (MEDD/MME) for multiple concurren
Opioid Rotation and Conversion Calculator Calculate equianalgesic opioid doses when rotating between opioids. Applies inco
IV Drip Rate Calculator (gtts/min) Calculate IV gravity infusion drip rate in drops per minute (gtts/min) for any v
APACHE II Score Calculator — ICU Severity & Mortality Calculate APACHE II score from 12 acute physiology variables plus age and chroni
MEWS Calculator — Modified Early Warning Score for Ward Deterioration Calculate MEWS (Modified Early Warning Score) from 5 vital signs to detect early
NEWS2 Calculator — National Early Warning Score 2 (UK NHS Standard) Calculate NEWS2 score from 7 physiological parameters. The UK NHS standard for d
Wells DVT Score Calculator — Deep Vein Thrombosis Pre-test Probability Calculate Wells DVT score to estimate pre-test probability of deep vein thrombos
Centor Score Calculator — Strep Pharyngitis Probability Calculate the Modified Centor (McIsaac) score to estimate group A streptococcal
MASCC Score Calculator — Febrile Neutropenia Risk & Outpatient Suitability Calculate MASCC score to identify low-risk febrile neutropenia patients suitable
Revised Trauma Score Calculator — Trauma Triage and Survival Prediction Calculate the Revised Trauma Score (RTS) from GCS, systolic BP, and respiratory
Injury Severity Score (ISS) Calculator — Anatomical Trauma Severity Calculate Injury Severity Score (ISS) from AIS scores across 6 body regions. Est
Parkland Burn Formula Calculator — IV Fluid Resuscitation for Burns Calculate Parkland formula IV fluid requirements for burn resuscitation. Determi
NEXUS C-Spine Calculator — Cervical Spine Injury Clearance in Trauma Apply NEXUS low-risk criteria to determine whether cervical spine imaging is req
Absolute Neutrophil Count (ANC) Calculator — Neutropenia Severity & Chemo Safety Calculate ANC from WBC and differential. Grades neutropenia severity (NCI CTCAE)
MCH / MCHC Calculator — Red Blood Cell Indices & Anemia Workup Calculate MCV, MCH, and MCHC from hemoglobin, hematocrit, and RBC count. Classif
Reticulocyte Production Index Calculator — Corrected Retic & Anemia Workup Calculate the corrected reticulocyte percentage and Reticulocyte Production Inde
Blood Transfusion Volume Calculator — pRBC, Platelets & FFP Dosing Calculate pediatric pRBC transfusion volume (4 mL/kg per 1 g/dL), adult unit req
Iron Deficit Calculator (Ganzoni Formula) — Total Iron Dose & IV Iron Products Calculate total iron deficit using the Ganzoni formula. Determines IV iron dose
Karnofsky Performance Status Calculator — Oncology Functional Assessment Calculate Karnofsky Performance Status (KPS) score. Determines chemotherapy elig
ECOG Performance Status Calculator — Oncology Eligibility & KPS Conversion Determine ECOG performance status (0–5). Guides chemotherapy eligibility, clinic
Chemotherapy BSA Dose Calculator — Oncology Drug Dosing by Body Surface Area Calculate chemotherapy doses based on BSA (Mosteller formula). Covers paclitaxel
Carboplatin AUC Dose Calculator — Calvert Formula with GFR Capping Calculate carboplatin dose using the Calvert formula (AUC × [GFR + 25]). Applies
Absolute Lymphocyte Count (ALC) Calculator — Lymphopenia Grading & Differential Calculate ALC from WBC and lymphocyte percentage. Grades lymphopenia severity (N
Preeclampsia Risk Calculator — FMF/ACOG First-Trimester Screening Assess preeclampsia risk using maternal risk factors, biomarkers, and uterine ar
Gravidity & Parity (GTPAL) Calculator — Obstetric History Notation Calculate GTPAL obstetric notation from pregnancy history. Encodes Gravida, Term
Menstrual Cycle Length Calculator — Average Length & Regularity from History Calculate average menstrual cycle length and variability from 6 recent cycles. I
MELD Score Calculator — Liver Disease Severity & Transplant Priority Calculate MELD score from bilirubin, creatinine, and INR. Estimates 3-month mort
MELD-Na Calculator — Sodium-Adjusted MELD for Liver Disease Calculate MELD-Na score (sodium-adjusted MELD) from bilirubin, creatinine, INR,
Child-Pugh Score Calculator — Cirrhosis Severity Classification Calculate Child-Pugh score and class (A/B/C) from 5 parameters: bilirubin, album
Ranson Criteria Calculator — Acute Pancreatitis Severity & Mortality Calculate Ranson score from 5 admission and 6 48-hour criteria for acute pancrea
Glasgow (Imrie) Pancreatitis Score Calculator — Severity at 48 Hours Calculate Glasgow-Imrie pancreatitis score from 8 criteria assessed at 48 hours.
Maddrey Discriminant Function Calculator — Alcoholic Hepatitis Severity Calculate Maddrey discriminant function for alcoholic hepatitis severity. DF ≥32
Braden Scale Calculator — Pressure Injury Risk Assessment Calculate Braden Scale score (6–23) to assess pressure ulcer/injury risk. Six su
IV Pump Rate Calculator — Infusion Rate mL/hr Calculate IV pump infusion rate in mL/hr from ordered dose (mcg/kg/min, mg/hr, u
Insulin Drip Calculator — DKA, HHS & ICU Glycemic Protocol Calculate starting IV insulin infusion rate for DKA, HHS, and ICU hyperglycemia.
Vancomycin Dose Calculator — Loading, Maintenance & AUC-Guided Calculate vancomycin loading dose (25-30 mg/kg) and maintenance dose with interv
Aminoglycoside Dose Calculator — Gentamicin, Tobramycin, Amikacin Calculate gentamicin, tobramycin, and amikacin doses using once-daily (Hartford)
Acetaminophen Toxicity Calculator — Rumack-Matthew Nomogram & NAC Apply the Rumack-Matthew nomogram to determine NAC (N-acetylcysteine) indication
Norton Scale Calculator — Pressure Ulcer Risk Assessment Calculate Norton Scale score (5–20) for pressure ulcer risk from physical condit
PUSH Tool 3.0 — Pressure Ulcer Scale for Healing Calculator Calculate PUSH (Pressure Ulcer Scale for Healing) Tool 3.0 score (0–17) from wou
NRS-2002 Nutrition Risk Screening Calculator — Hospital Malnutrition Calculate NRS-2002 (Nutrition Risk Screening 2002) score for hospitalised patien
Canine Blood Volume Calculator — Dog TBV, Transfusion & Donation Estimate total blood volume (TBV) in dogs using 80 mL/kg (standard) or 90 mL/kg
Veterinary Anesthesia Dose Calculator — Dog, Cat, Rabbit, Horse Calculate veterinary anesthesia doses for dogs, cats, rabbits, and horses. Cover