286 health calculators that get the numbers right.
Weight and BMI, nutrition, fitness, pregnancy, sleep and clinical tools. No signup, no paywalls.
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Weight & Body 23 calculators
Weight & Body overview
- A Body Shape Index CalculatorA Body Shape Index (ABSI)
- Adjusted Body Weight CalculatorAdjusted body weight
- BMI CalculatorYour Body Mass Index
- BMR CalculatorCalories you burn at rest
- Body Adiposity Index CalculatorBody Adiposity Index
- Body Fat PercentageBody fat % from measurements
- Body Frame Size CalculatorSmall, medium or large frame
- Body Roundness Index CalculatorBody Roundness Index
- Body Shape CalculatorYour body shape type
- Calorie CalculatorDaily calories for your goal
- Geriatric BMI CalculatorBMI for adults 65 and older
- GLP-1 Dose Titration Schedule CalculatorGLP-1 dose schedule by week
- GLP-1 Eligibility CalculatorDo you qualify for a GLP-1?
- GLP-1 Weight Loss CalculatorExpected weight loss on a GLP-1
- Goal Weight Timeline CalculatorWhen you'll reach your goal weight
- Healthy Weight Range CalculatorHealthy weight range for your height
- Ideal WeightYour ideal weight range
- Overweight Classification CalculatorYour weight category by BMI
- Ponderal Index CalculatorPonderal index
- Relative Fat Mass CalculatorRelative Fat Mass from your waist
- Skinfold Body Fat CalculatorBody fat % from skinfold calipers
- Waist-to-Height Ratio CalculatorWaist-to-height ratio
- Weight Loss Percentage CalculatorPercent of body weight lost
Diet & Nutrition 28 calculators
Diet & Nutrition overview
- Added Sugar Intake CalculatorAdded sugar vs. the daily limit
- Alcohol Calorie CalculatorCalories in an alcoholic drink
- Calorie Deficit CalculatorDaily calories to lose weight
- Carbohydrate CalculatorHow many carbs to eat per day
- Creatine Dosage CalculatorCreatine loading and daily dose
- Estimated Energy Requirement CalculatorYour estimated energy requirement
- Fiber Intake CalculatorYour daily fiber target
- Fish Oil Dose CalculatorEPA and DHA in your fish oil
- GLP-1 Protein & Muscle Preservation CalculatorProtein needs on a GLP-1
- Glycemic Index CalculatorGlycemic index of common foods
- Glycemic Load CalculatorGlycemic load of a meal
- Intermittent Fasting CalculatorPlan fasting and eating windows
- Keto Macro CalculatorMacros for a keto diet
- Macro CalculatorProtein, carbs and fat for your goal
- Meal Calorie EstimatorCalories in a meal
- Melatonin Dose CalculatorMelatonin dose and timing guidance
- Micronutrient Needs CalculatorDaily vitamins and minerals you need
- Net Carbs CalculatorNet carbs from a nutrition label
- Potassium Intake CalculatorPotassium vs. the daily target
- Protein Per Day CalculatorHow much protein you need
- Sodium Intake CalculatorSodium vs. the daily limit
- Supplement Dosage CalculatorCommon supplement doses
- Vitamin A Intake CalculatorVitamin A vs. the RDA
- Vitamin C Intake CalculatorVitamin C vs. the RDA
- Vitamin D Dosage CalculatorVitamin D dose from your blood level
- Water From Food CalculatorHow much water you get from food
- Water IntakeHow much water to drink a day
- Weight Watchers Points CalculatorPoints value of a food
Fitness & Training 24 calculators
Fitness & Training overview
- Archery Draw Length CalculatorArchery draw length
- Army Body Fat CalculatorArmy body fat standard
- Army Fitness Test (AFT) CalculatorArmy Fitness Test score
- Body Recomposition CalculatorLose fat and build muscle together
- Calories Burned CalculatorCalories burned by activity
- Cycling FTP CalculatorCycling FTP and power zones
- Cycling Power-to-Weight RatioCycling watts per kilogram
- Face Shape CalculatorYour face shape
- FFMI CalculatorFat-free mass index
- Grip Strength Percentile CalculatorGrip strength percentile by age
- Heart Rate ZonesHeart rate training zones
- HRV Calculator (Heart Rate Variability by Age)HRV compared to your age
- Hydration CalculatorFluids and electrolytes for exercise
- Lean Body Mass CalculatorLean body mass
- Navy PRT / Air Force PT ScoreNavy PRT and Air Force PT scores
- One Rep Max CalculatorEstimate your one-rep max
- Pace CalculatorRunning pace and finish time
- Recovery Time CalculatorRest time between workouts
- Steps to CaloriesCalories from your step count
- Swim Pace CalculatorSwim pace per 100m
- Target Heart Rate CalculatorTarget heart rate (Karvonen)
- TDEE CalculatorTotal daily calories you burn
- VO2 Max CalculatorEstimate your VO2 max
- Wilks Score CalculatorWilks and DOTS scores
Pregnancy & Fertility 12 calculators
Pregnancy & Fertility overview
- Child Development Milestone TrackerBaby development milestones
- Conception CalculatorWhen you likely conceived
- Due Date CalculatorYour pregnancy due date
- Fertility by Age CalculatorFertility and IVF odds by age
- hCG Levels CalculatorAre hCG levels normal for your week?
- Implantation CalculatorWhen implantation likely happens
- IVF Due Date CalculatorIVF due date from transfer date
- Menopause Symptom TrackerMenopause stage and symptoms
- Ovulation CalculatorOvulation date and fertile window
- Period TrackerPredict your next period
- Pregnancy CalculatorDue date and pregnancy milestones
- Pregnancy Weight GainHealthy pregnancy weight gain
Sleep & Mental Health 9 calculators
Sleep & Mental Health overview
- Burnout Risk CalculatorYour burnout risk
- Caffeine Bedtime CalculatorYour caffeine cutoff for sleep
- Epworth Sleepiness Scale CalculatorEpworth daytime sleepiness score
- GAD-7 Anxiety ScreeningGAD-7 anxiety screening
- PHQ-9 Depression ScreeningPHQ-9 depression screening
- Sleep CalculatorBest bedtime by sleep cycles
- Sleep Debt CalculatorYour sleep debt and recovery
- Sobriety CalculatorTime sober and milestones
- Stress Cost CalculatorWhat workplace stress costs
Health Checks 23 calculators
- A1c CalculatorA1c to average blood sugar
- Alcohol Units CalculatorAlcohol units vs. weekly guidelines
- BAC CalculatorEstimate blood alcohol content
- Biological Age CalculatorEstimate your biological age
- Blood Donation Eligibility CalculatorCan you donate blood?
- Blood Pressure CalculatorWhat your blood pressure means
- Blood Type CalculatorBlood type compatibility and inheritance
- Body Surface Area CalculatorBody surface area
- CHADS-VASc Stroke Risk ScoreCHA₂DS₂-VASc stroke risk
- Cholesterol CalculatorCholesterol ratios and heart risk
- Creatinine Clearance CalculatorCreatinine clearance (Cockcroft-Gault)
- Drug Dosage CalculatorWeight-based drug doses
- eGFR CalculatorKidney function (eGFR)
- Framingham Risk Score10-year heart disease risk
- Height Predictor CalculatorPredict a child's adult height
- IV Drip Rate CalculatorIV drip rate and infusion time
- Mean Arterial Pressure CalculatorMean arterial pressure
- Pack Year CalculatorSmoking pack-years
- Pediatric Dosage CalculatorPediatric mg/kg doses
- STOP-BANG Sleep Apnea Risk ScoreSleep apnea risk (STOP-BANG)
- Vitamin D CalculatorVitamin D from sun and supplements
- Waist-to-Hip Ratio CalculatorWaist-to-hip ratio
- Wells Score for DVT / PEWells score for DVT or PE
Cardiac & Critical Care 30 calculators
- A-a Gradient CalculatorA-a oxygen gradient
- Ankle-Brachial Index CalculatorAnkle-brachial index
- Arterial Age CalculatorYour arterial (vascular) age
- Cardiac Index CalculatorCardiac index
- Cardiac Output CalculatorCardiac output
- Cerebral Perfusion Pressure CalculatorCerebral perfusion pressure
- CURB-65 Score CalculatorCURB-65 pneumonia severity
- DAPT Score CalculatorDAPT score
- Dead Space CalculatorPhysiologic dead space
- Diabetic Ketoacidosis Assessment CalculatorDKA severity assessment
- Epinephrine Dose CalculatorEpinephrine dose by weight
- GRACE ACS Risk Score CalculatorGRACE ACS risk score
- Gupta Perioperative Risk CalculatorGupta perioperative cardiac risk
- HAS-BLED Score CalculatorHAS-BLED bleeding risk
- HEART Score CalculatorHEART score for chest pain
- Lung Capacity CalculatorPredicted total lung capacity
- Metabolic Syndrome CalculatorMetabolic syndrome check
- NIH Stroke Scale CalculatorNIH Stroke Scale
- qSOFA CalculatorqSOFA score
- QTc CalculatorCorrected QT interval (QTc)
- Rate Pressure Product CalculatorRate pressure product
- Revised Geneva Score CalculatorRevised Geneva score for PE
- Revised Trauma Score CalculatorRevised Trauma Score
- Shock Index CalculatorShock index
- SIRS Criteria CalculatorSIRS criteria
- Sokolow-Lyon Index CalculatorSokolow-Lyon LVH index
- Stroke Volume CalculatorStroke volume
- TIMI Risk Score Calculator (STEMI)TIMI risk for STEMI
- TIMI Risk Score Calculator (UA/NSTEMI)TIMI risk for UA/NSTEMI
- tPA Dose CalculatorAlteplase (tPA) dose for stroke
Labs & Biomarkers 53 calculators
- Age-Adjusted D-dimer CalculatorAge-adjusted D-dimer cutoff
- Albumin/Creatinine Ratio CalculatorUrine albumin/creatinine ratio
- Albumin/Globulin Ratio CalculatorAlbumin/globulin ratio
- Alvarado Score CalculatorAlvarado score for appendicitis
- Anion Gap CalculatorSerum anion gap
- APRI CalculatorAPRI liver fibrosis index
- Bicarbonate Deficit CalculatorBicarbonate deficit
- BUN/Creatinine Ratio CalculatorBUN/creatinine ratio
- Carboplatin Dose CalculatorCarboplatin dose (Calvert)
- Child-Pugh Score CalculatorChild-Pugh score
- Cholesterol Ratio CalculatorTotal cholesterol to HDL ratio
- Cholesterol Unit ConverterCholesterol mg/dL to mmol/L
- Corrected Anion Gap CalculatorAlbumin-corrected anion gap
- Corrected Calcium CalculatorAlbumin-corrected calcium
- Corrected Count Increment CalculatorPlatelet corrected count increment
- Corrected Sodium CalculatorSodium corrected for glucose
- Drug Half-Life CalculatorDrug elimination half-life
- Electrolyte Replacement CalculatorSodium and potassium replacement
- Estimated Average Glucose CalculatorA1c to estimated average glucose
- FENa CalculatorFractional excretion of sodium
- FEUrea CalculatorFractional excretion of urea
- FIB-4 Index CalculatorFIB-4 liver fibrosis index
- Free Testosterone CalculatorFree and bioavailable testosterone
- Free Water Deficit CalculatorFree water deficit
- Gabapentin Dose CalculatorGabapentin starting dose
- Glucose Infusion Rate (GIR) CalculatorGlucose infusion rate (GIR)
- Glucose Unit ConverterGlucose mmol/L to mg/dL
- HOMA-IR CalculatorHOMA-IR insulin resistance
- INR CalculatorINR from prothrombin time
- Insulin Correction Factor CalculatorInsulin correction factor
- Iron Deficit Calculator (Ganzoni)Iron deficit (Ganzoni)
- LDL Calculator (Friedewald Formula)LDL by the Friedewald formula
- Levothyroxine Dose CalculatorLevothyroxine starting dose
- Light's Criteria CalculatorLight's criteria for pleural fluid
- MELD-Na CalculatorMELD-Na liver score
- Mentzer Index CalculatorMentzer index
- NAFLD Fibrosis Score CalculatorNAFLD fibrosis score
- Newborn Bilirubin Risk CalculatorNewborn bilirubin risk
- Osmolal Gap CalculatorOsmolal gap
- Plasma Osmolality CalculatorCalculated plasma osmolality
- Protein/Creatinine Ratio CalculatorUrine protein/creatinine ratio
- QUICKI CalculatorQUICKI insulin sensitivity
- RBC Indices CalculatorMCV, MCH, MCHC and RDW
- Sodium Correction Rate CalculatorSafe sodium correction rate
- Sodium Deficit CalculatorSodium deficit
- Sodium in Salt CalculatorSalt grams to sodium milligrams
- Transferrin Saturation CalculatorTransferrin saturation
- TTKG CalculatorTranstubular potassium gradient
- Urea Reduction Ratio CalculatorUrea reduction ratio
- Urine Anion Gap CalculatorUrine anion gap
- VLDL CalculatorVLDL from triglycerides
- Warfarin Dosing Adjustment CalculatorWarfarin dose adjustment
- Winters' Formula CalculatorExpected pCO2 (Winters' formula)
Dosing & Medications 17 calculators
- 4T Score Calculator4T score for HIT
- Acetaminophen Pediatric Dose CalculatorChildren's acetaminophen dose
- Amoxicillin Pediatric Dose CalculatorChildren's amoxicillin dose
- Benzodiazepine Conversion CalculatorBenzodiazepine dose conversion
- Centor Score CalculatorCentor score for strep throat
- Corticosteroid Conversion CalculatorCorticosteroid dose conversion
- FFP Dose CalculatorFresh frozen plasma dose
- Ibuprofen Pediatric Dose CalculatorChildren's ibuprofen dose
- Insulin Total Daily Dose CalculatorTotal daily insulin dose
- IVIG Dose CalculatorIVIG dose by weight
- Lidocaine Max Dose CalculatorMaximum safe lidocaine dose
- Lille Model CalculatorLille model for steroid response
- Local Anesthetic Max Dose CalculatorLocal anesthetic maximum dose
- Maddrey's Discriminant Function CalculatorMaddrey's discriminant function
- MME CalculatorMorphine milligram equivalents
- Opioid Conversion CalculatorOpioid dose conversion
- Pediatric Weight-Based Dose CalculatorPediatric weight-based dose
Obstetrics & Pediatrics 22 calculators
- Adjusted Age CalculatorCorrected age for a premature baby
- Amniotic Fluid Index CalculatorAmniotic fluid index (AFI)
- APGAR Score CalculatorNewborn APGAR score
- Biophysical Profile CalculatorFetal biophysical profile score
- Bishop Score CalculatorBishop score for labor induction
- BMI for Kids CalculatorBMI percentile for kids 2-19
- BMI for Teens CalculatorBMI percentile for teens
- Cervical Dilation Labor Progress CalculatorLabor progress by cervical dilation
- Crown-Rump Length Dating CalculatorGestational age from CRL
- Estimated Blood Loss CalculatorBlood loss at delivery
- Estimated Fetal Weight CalculatorEstimated fetal weight
- Fetal Weight Percentile CalculatorFetal weight percentile
- Fundal Height CalculatorFundal height vs. gestational age
- Gestational Age & EDD CalculatorGestational age and due date
- Group B Strep Risk CalculatorGroup B strep prophylaxis check
- GTPAL CalculatorGTPAL obstetric history
- Mean Sac Diameter CalculatorMean gestational sac diameter
- Nuchal Translucency Risk CalculatorNuchal translucency percentile
- Pearl Index CalculatorContraceptive failure (Pearl Index)
- Pediatric Growth Percentile CalculatorChild growth percentiles
- Preterm Birth Risk CalculatorPreterm birth risk screen
- VBAC Success CalculatorChance of a successful VBAC
Clinical Scores & Screening 45 calculators
- Absolute Eosinophil Count CalculatorAbsolute eosinophil count
- Absolute Lymphocyte Count CalculatorAbsolute lymphocyte count
- Absolute Neutrophil Count CalculatorAbsolute neutrophil count (ANC)
- Absolute Reticulocyte Count CalculatorAbsolute reticulocyte count
- Aldrete Score CalculatorAldrete recovery score
- Allowable Blood Loss CalculatorMaximum allowable blood loss
- APACHE II Score CalculatorAPACHE II ICU score
- AST/ALT Ratio CalculatorAST/ALT (De Ritis) ratio
- Blood Sugar ConverterBlood sugar mg/dL to mmol/L
- Blood Volume CalculatorTotal blood volume (Nadler)
- BODE Index CalculatorBODE index for COPD
- Corrected Reticulocyte Count CalculatorCorrected reticulocyte count
- Diabetes Risk Calculator (FINDRISC)10-year type 2 diabetes risk
- Duke Treadmill Score CalculatorDuke treadmill score
- Ejection Fraction CalculatorEjection fraction
- Estimated Blood Volume CalculatorEstimated blood volume by mL/kg
- EtG Alcohol Detection CalculatorHow long EtG tests detect alcohol
- Fagerström Test Calculator (FTND)Fagerström nicotine dependence test
- FEV1/FVC Ratio CalculatorFEV1/FVC ratio
- Glasgow Coma Scale CalculatorGlasgow Coma Scale
- Heaviness of Smoking Index CalculatorHeaviness of Smoking Index
- ICH Score CalculatorICH score for brain hemorrhage
- Injury Severity Score CalculatorInjury Severity Score (ISS)
- Kt/V Daugirdas CalculatorDialysis adequacy (Kt/V)
- Maintenance Fluids Calculator (Holliday-Segar)Pediatric maintenance fluids
- Mean Airway Pressure CalculatorMean airway pressure
- MEWS CalculatorModified Early Warning Score
- Neutrophil-Lymphocyte Ratio CalculatorNeutrophil-to-lymphocyte ratio
- NEWS2 CalculatorNEWS2 early warning score
- Oxygenation Index CalculatorOxygenation index
- Padua Prediction Score CalculatorPadua VTE risk score
- PaO2/FiO2 Ratio CalculatorPaO2/FiO2 ratio
- Parkland Formula CalculatorBurn fluid resuscitation (Parkland)
- Peak Expiratory Flow CalculatorPredicted peak expiratory flow
- Plasma Volume CalculatorEstimated plasma volume
- Pneumonia Severity Index CalculatorPneumonia Severity Index
- Rapid Shallow Breathing Index CalculatorRapid shallow breathing index
- Reticulocyte Production Index CalculatorReticulocyte production index
- Six-Minute Walk Distance CalculatorPredicted six-minute walk distance
- Smoking Recovery Timeline CalculatorHow your body recovers after quitting
- SOFA Score CalculatorSOFA organ failure score
- Standard Drink CalculatorStandard drinks in a beverage
- Tidal Volume CalculatorLung-protective tidal volume
- Total Body Water CalculatorTotal body water
- Vital Capacity CalculatorPredicted vital capacity