CalcVitaCalcVita
Calculators portal

Health Calculators

Trusted tools to evaluate and monitor your wellbeing.

Health & Longevity

Assess your aging and functional capacity.

Biological Age CalculatorTriangulate your true age with body, function, and fitness tests.Body Inflammation CalculatorAssess your chronic inflammation level across 7 lifestyle dimensions.

Biohacking

Optimize your performance, sleep and energy with personal data.

Caffeine Half-Life CalculatorWhen to stop drinking coffee so it doesn’t wreck your sleep? Personalized Bateman model.

Screening

Early detection tools based on clinical criteria. They do not replace medical diagnosis.

Lipedema AssessmentScreening questionnaire based on scientific consensus to identify signs of lipedema.Child ADHD TestADHD symptom screening based on the validated NICHQ Vanderbilt scale (endorsed by the AAP). Not a diagnosis.Blood Pressure CalculatorClassify your blood pressure using AHA 2017 guidelines and estimate your population percentile.eGFR Calculator — Kidney FunctionCalculate your estimated Glomerular Filtration Rate (eGFR) and CKD stage using the race-free CKD-EPI 2021 formula, recommended by KDIGO 2024.A1C to Blood Sugar — eAG ConverterConvert A1C to estimated Average Glucose (eAG) in mg/dL and mmol/L using the ADAG formula. Includes ADA 2024 risk classification (normal, prediabetes, diabetes).Cholesterol Ratio — TC/HDL, LDL/HDLCalculate your TC/HDL, LDL/HDL, non-HDL cholesterol, and triglycerides/HDL ratio with AHA/ACC 2018 cardiovascular risk classification (optimal, borderline, high, very high).10-year Cardiovascular Risk — ASCVDPersonal probability of heart attack or stroke over the next 10 years with the Pooled Cohort Equations (ACC/AHA 2013). Includes a "What if I…?" comparator for smoking, BP and cholesterol.CHA₂DS₂-VASc — AFib Stroke RiskEstimates annual stroke risk in atrial fibrillation and guides anticoagulation (Lip 2010).HAS-BLED — Bleeding Risk in AFibEstimates major bleeding risk on anticoagulation in atrial fibrillation (Pisters 2010).FINDRISC — 10-year Diabetes RiskFinnish validated screening (Lindström & Tuomilehto 2003) — no blood draw. 8 questions estimate your 10-year type 2 diabetes risk. Adopted by the IDF.HOMA-IR — Insulin ResistanceCalculate your HOMA-IR from fasting glucose and insulin. Validated against the euglycemic clamp (Bonora 2000). Detects insulin resistance years before diabetes.Creatinine Clearance — Cockcroft-GaultEstimate creatinine clearance (CrCl) using the Cockcroft-Gault equation. Essential for drug dosing adjustments in renal impairment (metformin, antibiotics, anticoagulants).Body Surface Area — BSACalculate Body Surface Area using 5 validated formulas: Du Bois, Mosteller, Haycock, Gehan-George, and Boyd. Essential for chemotherapy dosing (mg/m²) and cardiac index.Corrected Calcium — AlbuminCorrect serum calcium for albumin using the Payne formula (1973). Essential in hypoalbuminemia to unmask true hypocalcemia or hypercalcemia.Blood Type Inheritance — ABO + RhCalculate the probability of each blood type for your child based on both parents' ABO and Rh genotypes. Punnett square results for all 8 possible types.

Nutrition

Tools to guide eating habits and body composition.

Body Mass Index (BMI)Calculate BMI with guidance across healthy ranges.TDEEEstimate daily energy expenditure to plan calories.Macro DistributionEstimate optimal protein, fat and carbohydrate ratios.Calorie CalculatorCalculate daily calories needed based on your goal: lose, maintain or gain weight.Body Fat CalculatorEstimate your body fat percentage using Navy and CUN-BAE methods.BRI — Body Roundness IndexEstimate central/visceral fat from waist and height with the geometry-based Body Roundness Index (Thomas 2013). A 2024 JAMA study linked high BRI to higher mortality — a modern complement to BMI.GLP-1 / Ozempic Weight LossSee the AVERAGE weight loss from the pivotal GLP-1 trials — semaglutide (−14.9%, STEP 1) and tirzepatide (up to −20.9%, SURMOUNT-1) — applied to your weight. Educational, not medical advice.Water Intake CalculatorCalculate how much water you should drink daily based on weight, activity and climate.Ideal Weight CalculatorCalculate your ideal weight using 4 scientific formulas: Devine, Robinson, Miller, and Hamwi.Lean Body Mass CalculatorCalculate your lean body mass using 3 scientific formulas: Boer, Hume, and James.Protein CalculatorCalculate daily protein needs by weight, activity level, and goals using ISSN-backed formulas.Keto CalculatorCalculate your keto macros: Standard, High-Protein, or Modified keto with electrolyte recommendations.Basal Metabolic Rate (BMR) CalculatorCalculate your basal metabolic rate using Mifflin-St Jeor and Harris-Benedict formulas.Indirect Calorimetry — Resting Energy ExpenditureMeasure your true metabolism (REE) from gas-analyzer VO₂ and VCO₂. More accurate than predictive formulas. Includes a PDF report.Calorie Deficit CalculatorPlan your calorie deficit for safe and sustainable weight loss.Waist-to-Hip Ratio (WHR)Assess your body fat distribution and cardiovascular risk with the waist-to-hip ratio.Body Frame Size CalculatorDetermine if you have a small, medium, or large frame to fine-tune your ideal weight.Intermittent Fasting CalculatorCalculate your fasting and eating windows for 16/8, 18/6, and 5:2 protocols.

Pregnancy

Pregnancy tracking with milestones and suggested check-ins.

Pregnancy due dateEstimate due date from the last menstrual period.Gestational ageSee current gestational age and trimester information.Due date by ultrasoundCalculate due date from an ultrasound: gestational age or crown-rump length (CRL).Ovulation CalculatorCalculate your ovulation date and fertile window from your last period.Period calculatorPredict your next period, fertile window, ovulation and PMS phase.Conception Date CalculatorEstimate the likely conception date from your due date or last menstrual period.IVF Due Date CalculatorCalculate the estimated due date for pregnancies conceived through in vitro fertilization (IVF).Pregnancy Weight Gain CalculatorFind the recommended pregnancy weight gain range based on IOM guidelines and pre-pregnancy BMI.

Wellness

Tools to improve your rest and daily habits.

Sleep calculatorFind your optimal bedtime or wake time based on 90-minute sleep cycles.Running Pace CalculatorCalculate running pace, splits, and race predictions for 5K, 10K, Half Marathon, and Marathon.Water intake calculatorCalculate your daily water needs based on weight and activity level.Heart Rate Zones CalculatorCalculate your 5 heart rate training zones to optimize aerobic and anaerobic workouts.VO2 Max CalculatorEstimate your maximum aerobic capacity and cardiovascular fitness level.One Rep Max Calculator (1RM)Calculate your 1RM using 5 science-backed formulas: Epley, Brzycki, Lander, Lombardi, O'Connor. Includes rep percentage chart for training programming.Blood Alcohol Calculator (BAC)Estimate your blood alcohol content based on drinks consumed, weight, and time elapsed.

Pediatrics

Track child growth using official percentiles.

Growth percentilesAssess weight, height and head circumference by international standards.Child Height PredictorPredict adult height using the Khamis-Roche method.Weight Percentile CalculatorAssess your child's weight according to WHO standards.