Health and science calculations help individuals understand body metrics, fitness performance, biological processes, and health-related measurements in a structured and measurable way. Whether tracking pregnancy milestones, evaluating physical fitness, analyzing body composition, or modeling biological systems, accurate calculations support informed planning and general understanding.
CalcHub’s Health & Science calculators are designed to provide estimate-based outputs using widely accepted medical, physiological, and scientific formulas. These tools are intended for educational and planning purposes only and do not replace professional medical, fitness, or scientific advice. Results may vary based on individual health conditions, measurement accuracy, and professional guidelines.
Pregnancy, Fertility & Reproductive Planning
Pregnancy and fertility planning often involve time-based and hormone-related calculations. These calculators help estimate dates, cycles, and general reproductive metrics using standard biological assumptions.
Due Date Calculator – Estimates pregnancy due date based on last menstrual period or conception timing.
Reverse Due Date Calculator – Calculates estimated conception date based on a known due date.
Ovulation Calculator – Estimates fertile window and ovulation timing within a menstrual cycle.
Fertility Calculator – Estimates fertility periods based on cycle length and timing.
hCG Calculator – Estimates human chorionic gonadotropin (hCG) levels over time.
Pregnancy Risk Calculator – Estimates relative pregnancy likelihood based on timing inputs.
Birth Control Calculator – Estimates effectiveness and timing considerations for birth control use.
Fitness, Training & Physical Performance
Fitness and training calculators support performance tracking, exercise planning, and workload estimation using standardized fitness metrics.
Fitness Test Calculator – Evaluates fitness performance based on standardized test inputs.
Running Pace Calculator – Calculates running pace, time, or distance relationships.
Steps to Miles Calculator – Converts step count into approximate walking or running distance.
Heart Rate Calculator – Estimates target heart rate zones based on age and activity level.
Calorie Calculator – Estimates daily calorie needs based on body metrics and activity.
Starbucks Calorie Calculator – Estimates calorie content of common Starbucks menu items.
TDEE Calculator – Calculates total daily energy expenditure based on activity level.
VO₂ Max Calculator – Estimates aerobic capacity using fitness performance inputs.
RPE Calculator – Calculates perceived exertion levels during physical activity.
Rep Max Calculator – Estimates one-rep maximum strength from submaximal lifts.
Height Calculator – Estimates height using growth or measurement inputs.
Body Composition & Physical Metrics
Body composition calculators help estimate proportions of fat, mass, and physical structure using generalized measurement formulas.
Body Fat Calculator – Estimates body fat percentage based on body measurements.
BMI Calculator – Calculates body mass index using height and weight.
Body Shape Calculator – Estimates body shape classification based on measurements.
Health Metrics, Nutrition & Substances
Health metric calculators assist with estimating nutritional intake, substance effects, and general physiological values using standardized assumptions.
Macro Calculator – Estimates macronutrient distribution based on dietary goals.
BAC Calculator – Estimates blood alcohol concentration based on intake and timing.
Alcohol & Breastfeeding Calculator – Estimates alcohol clearance timing for breastfeeding considerations.
ABV Calculator – Calculates alcohol by volume for beverages.
Caffeine Calculator – Estimates caffeine intake and clearance timing.
THC Calculator – Estimates THC exposure and metabolism timing.
Fasting Calculator – Estimates fasting duration and schedule timing.
Medication & Dosage Estimation
Medication-related calculators provide general educational estimates and should never replace professional medical guidance.
Medication Dosage Calculator – Estimates general dosage values based on inputs.
Drug Half-Life Calculator – Estimates how drug concentration decreases over time.
Insulin Calculator – Estimates insulin requirements using generalized formulas.
Biology & Genetics Calculations
Biology and genetics calculators help model inheritance patterns, population genetics, and biochemical processes using established scientific formulas.
Punnett Square Calculator – Models genetic inheritance outcomes.
Genetics Calculator – Assists with genetic probability calculations.
Hardy-Weinberg Calculator – Calculates allele frequencies in populations.
Enzyme Kinetics Calculator – Models enzyme reaction rates using kinetic equations.
Using Health & Science Calculators Responsibly
Health and science calculators provide estimates based on generalized formulas and assumptions. They do not diagnose conditions, prescribe treatment, or replace medical, nutritional, or scientific professionals. Individual health outcomes may vary based on genetics, medical history, lifestyle, and professional care.
For medical or health-related decisions, users should consult licensed healthcare professionals. For academic or scientific work, results should be verified against authoritative references or instructional materials.