Health & Fitness Calculators Online
Free health calculators for BMI, calories, body fat, pregnancy, heart rate, and more. Track your fitness journey. Explore our free calculator online tools below.
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Flagship Tools
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Popular Health & Fitness Calculators
Pediatric Fever Temperature Calculator
Free Pediatric Fever Temperature Calculator โ Assess fever severity in children based on temperature, age, and measurement method. Guide when to seek medical attention for febrile children.
Infant Formula Amount Calculator
Free Infant Formula Amount Calculator โ Calculate recommended formula amounts for infants based on age and weight. Ensure proper nutrition and feeding schedules for bottle-fed babies.
Children's Ibuprofen Dosage Calculator
Free Children's Ibuprofen Dosage Calculator โ Calculate safe ibuprofen dosage for children based on weight and age. Ensure accurate medication dosing for fever and pain relief in pediatric patients.
APGAR Score Calculator
Free APGAR Score Calculator โ Calculate the APGAR score for newborn assessment at 1 and 5 minutes after birth. Standard neonatal evaluation of appearance, pulse, grimace, activity, and respiration.
Sleep Cycle Calculator
Free Sleep Cycle Calculator โ Plan your sleep schedule to wake up between sleep cycles for optimal alertness. Calculate ideal bedtime or wake time based on 90-minute sleep cycles.
Wake-Up Time Calculator
Free Wake-Up Time Calculator โ Calculate the best time to wake up based on your bedtime and sleep cycles. Wake up during light sleep for a refreshed and energized morning.
Sleep Debt Calculator
Free Sleep Debt Calculator โ Calculate your accumulated sleep debt and estimate recovery time. Track chronic sleep deprivation and plan catch-up sleep for better health.
Power Nap Calculator
Free Power Nap Calculator โ Calculate the ideal nap duration based on sleep cycle timing. Maximize the benefits of napping without waking up groggy for enhanced productivity.
Circadian Rhythm Calculator
Free Circadian Rhythm Calculator โ Assess your chronotype and optimal daily schedule based on your natural circadian rhythm. Align work, sleep, and meals with your biological clock.
PHQ-9 Depression Score Calculator
Free PHQ-9 Depression Score Calculator โ Screen for depression severity using the validated PHQ-9 patient health questionnaire. Assess depressive symptoms and track treatment progress.
GAD-7 Anxiety Score Calculator
Free GAD-7 Anxiety Score Calculator โ Screen for generalized anxiety disorder severity using the validated GAD-7 questionnaire. Assess anxiety symptoms and monitor treatment response.
Stress Level Calculator
Free Stress Level Calculator โ Assess your current stress levels using the Perceived Stress Scale (PSS). Understand how stress affects your health and identify opportunities for stress management.
Burnout Assessment Calculator
Free Burnout Assessment Calculator โ Evaluate your risk of professional burnout using validated assessment tools. Identify early signs of burnout across exhaustion, cynicism, and efficacy dimensions.
Well-Being Index Calculator
Free Well-Being Index Calculator โ Calculate your overall well-being score across physical, mental, social, and emotional domains. Track wellness progress and identify areas for improvement.
Resilience Score Calculator
Free Resilience Score Calculator โ Assess your psychological resilience using the Brief Resilience Scale (BRS). Measure your ability to bounce back from stress and adversity.
Drug Dosage Calculator
Free Drug Dosage Calculator โ Calculate safe medication doses based on weight, concentration, and recommended dosing guidelines. Essential tool for healthcare professionals and caregivers.
IV Drip Rate Calculator
Free IV Drip Rate Calculator โ Calculate intravenous drip rates in drops per minute based on volume, time, and drip factor. Essential for accurate IV fluid administration in clinical settings.
Fluid Resuscitation Calculator
Free Fluid Resuscitation Calculator โ Calculate fluid resuscitation volumes using the Parkland formula for burn patients. Guide initial fluid therapy in emergency and critical care settings.
Creatinine Clearance Calculator
Free Creatinine Clearance Calculator โ Estimate creatinine clearance using the Cockcroft-Gault formula. Assess renal function for drug dosing and kidney disease staging.
eGFR Calculator
Free eGFR Calculator โ Calculate estimated glomerular filtration rate using the CKD-EPI equation. Stage chronic kidney disease and monitor renal function over time.
BSA Calculator (Mosteller)
Free BSA Calculator โ Calculate body surface area using the Mosteller formula. Essential for chemotherapy dosing, burn assessment, and renal function calculations.
Anion Gap Calculator
Free Anion Gap Calculator โ Calculate the serum anion gap from sodium, chloride, and bicarbonate levels. Evaluate acid-base disorders and identify metabolic acidosis causes.
Oxygen Saturation Calculator
Free Oxygen Saturation Calculator โ Estimate oxygen saturation from partial pressure of oxygen using the oxygen dissociation curve. Assess respiratory function and oxygenation status.
A-a Gradient Calculator
Free Alveolar-Arterial Gradient Calculator โ Calculate the A-a gradient to assess gas exchange efficiency. Diagnose causes of hypoxemia including V/Q mismatch and shunt.
Glasgow Coma Scale Calculator
Free Glasgow Coma Scale Calculator โ Calculate the GCS score based on eye, verbal, and motor responses. Standardized neurological assessment for consciousness level in trauma and critical care.
APACHE II Score Calculator
Free APACHE II Score Calculator โ Calculate the Acute Physiology And Chronic Health Evaluation II score for ICU severity assessment. Predict mortality risk in critically ill patients.
MELD Score Calculator
Free MELD Score Calculator โ Calculate the Model for End-Stage Liver Disease score for liver transplant prioritization. Assess liver disease severity and three-month mortality risk.
Child-Pugh Score Calculator
Free Child-Pugh Score Calculator โ Calculate the Child-Pugh classification for cirrhosis severity. Guide treatment decisions and prognosis for chronic liver disease patients.
CURB-65 Score Calculator
Free CURB-65 Score Calculator โ Assess community-acquired pneumonia severity using the CURB-65 criteria. Guide hospitalization decisions and antibiotic therapy for pneumonia patients.
Pneumonia Severity Index (PSI) Calculator
Free Pneumonia Severity Index Calculator โ Calculate the PORT score for pneumonia severity and mortality risk. Guide outpatient vs. inpatient management decisions for pneumonia patients.
Ideal Body Weight Calculator
Free Ideal Body Weight Calculator โ Calculate ideal body weight using Devine, Robinson, Miller, and Hamwi formulas. Reference standard for drug dosing and nutritional assessment.
Adjusted Body Weight Calculator
Free Adjusted Body Weight Calculator โ Calculate adjusted body weight for obese patients using IBW and actual weight. Used for accurate drug dosing and metabolic calculations.
Corrected Calcium Calculator
Free Corrected Calcium Calculator โ Calculate corrected calcium levels for patients with abnormal albumin. Assess true calcium status in chronic kidney disease and critical illness.
FENa Calculator (Fractional Excretion of Sodium)
Free FENa Calculator โ Calculate fractional excretion of sodium to differentiate prerenal azotemia from acute tubular necrosis. Essential test for acute kidney injury diagnosis.
QTc Calculator (Corrected QT Interval)
Free QTc Calculator โ Calculate corrected QT interval using Bazett, Fridericia, Framingham, and Hodges formulas. Screen for QT prolongation risk and arrhythmia susceptibility.
Blood Alcohol Content (BAC) Calculator
Free Blood Alcohol Content Calculator โ Estimate your BAC based on drinks consumed, weight, gender, and time elapsed. Understand your intoxication level and when it is safe to drive.
Alcohol Calories Calculator
Free Alcohol Calories Calculator โ Calculate calories from alcoholic beverages by drink type and quantity. Track alcohol-related calorie consumption for weight management and health goals.
Caffeine Half-Life Calculator
Free Caffeine Half-Life Calculator โ Estimate how long caffeine stays in your system based on dose and metabolism. Plan your caffeine intake to avoid sleep disruption.
Caffeine by Beverage Calculator
Free Caffeine by Beverage Calculator โ Compare caffeine content across coffee, tea, energy drinks, and sodas. Track your daily caffeine intake from all sources.
Hangover Severity Calculator
Free Hangover Severity Calculator โ Assess hangover severity based on alcohol consumption, hydration, and sleep factors. Get personalized recovery tips and understand hangover risk factors.
CIWA-Ar Score Calculator
Free CIWA-Ar Score Calculator โ Calculate the Clinical Institute Withdrawal Assessment for Alcohol scale. Monitor alcohol withdrawal severity and guide benzodiazepine therapy in detoxification.
Calorie Calculator
Free Calorie Calculator โ Calculate daily calorie needs based on weight, activity level, and goals. Track calories for weight loss, muscle gain, or maintenance with precision. Perfect for fitness enthusiasts, dieters, and health-conscious individuals.
Lean Body Mass Calculator
Free Lean Body Mass Calculator โ Calculate your lean body mass and body fat percentage. Essential for fitness tracking, nutrition planning, and health assessment.
Body Fat Calculator
Free Body Fat Calculator โ Calculate your body fat percentage using measurements. Track body composition changes for fitness and health goals.
BMI Calculator
Free BMI Calculator โ Calculate your Body Mass Index and assess your weight category. Quick health screening tool for adults.
BMR Calculator
Free BMR Calculator โ Calculate your Basal Metabolic Rate. Determine daily calorie needs at complete rest using Mifflin-St Jeor equation.
TDEE Calculator
Free TDEE Calculator โ Calculate Total Daily Energy Expenditure based on BMR and activity level. Determine maintenance calories for weight management.
Pain Scale Calculator
Free Pain Scale Calculator โ Assess and quantify pain levels using standardized pain scales for medical evaluation and treatment planning.
Sleep Quality Index Calculator
Free Sleep Quality Index Calculator โ Calculate your sleep quality index based on duration, disturbances, and restorative sleep factors.
Fall Risk Assessment Calculator
Free Fall Risk Assessment Calculator โ Evaluate fall risk using gait, balance, and mobility factors for elderly and at-risk patients.
Wound Healing Assessment Calculator
Free Wound Healing Assessment Calculator โ Track wound healing progress using standardized wound assessment criteria and measurement tools.
Dehydration Assessment Calculator
Free Dehydration Assessment Calculator โ Assess dehydration severity based on symptoms, skin turgor, and fluid intake patterns.
UTI Risk Calculator
Free UTI Risk Calculator โ Evaluate urinary tract infection risk based on symptoms, history, and demographic factors.
Stroke Risk Calculator
Free Stroke Risk Calculator โ Calculate stroke risk using modified Framingham criteria including age, blood pressure, and lifestyle factors.
Asthma Control Test Calculator
Free Asthma Control Test Calculator โ Assess asthma control levels using standardized symptom frequency and limitation questionnaires.
COPD Assessment Calculator
Free COPD Assessment Calculator โ Evaluate COPD severity and progression using breathlessness, exacerbation history, and lung function.
Thyroid Risk Calculator
Free Thyroid Risk Calculator โ Assess thyroid disorder risk based on symptoms, family history, and blood test indicators.
Anemia Assessment Calculator
Free Anemia Assessment Calculator โ Evaluate anemia risk and severity using hemoglobin levels, symptoms, and demographic factors.
Osteoporosis Risk Calculator
Free Osteoporosis Risk Calculator โ Calculate osteoporosis risk using FRAX-based criteria including bone density and fracture history.
Arthritis Severity Index Calculator
Free Arthritis Severity Index Calculator โ Assess arthritis severity using pain, stiffness, and functional limitation scoring systems.