Calculator category
Health Calculators
Use health calculators for basic educational estimates with conservative assumptions and visible limitations.
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BAC CalculatorCalculate estimated BAC from standard drinks and body weight with this BAC calculator; review formula limits, source notes, and when to verify with.BMI CalculatorCalculate BMI from age and height with this BMI calculator; review formula limits, source notes, and when to verify with a professional.BMR CalculatorCalculate estimated BMR from age and sex used by equation with this BMR calculator; review formula limits, source notes, and when to verify with.Body Fat CalculatorCalculate estimated body fat from age and sex used by equation with this body fat calculator; review formula limits, source notes, and when to verify.Body Surface Area CalculatorCalculate mosteller BSA from age and height with this body surface area calculator; review formula limits, source notes, and when to verify with.Body Type CalculatorCalculate apparel body type from bust circumference and waist circumference with this body type calculator; review formula limits, source notes, and when.Bra Size CalculatorCalculate estimated bra size from underbust measurement and bust measurement with this bra size calculator; review formula limits, source notes, and when.Calorie CalculatorCalculate estimated maintenance calories from age and sex used by equation with this calorie calculator; review formula limits, source notes, and when.
All available health calculators
Choose the calculator by the result you need first, then check the page assumptions and sources before reusing the answer.
BAC CalculatorCalculate estimated BAC from standard drinks and body weight with this BAC calculator; review formula limits, source notes, and when to verify with.Estimated BACBMI CalculatorCalculate BMI from age and height with this BMI calculator; review formula limits, source notes, and when to verify with a professional.BMIBMR CalculatorCalculate estimated BMR from age and sex used by equation with this BMR calculator; review formula limits, source notes, and when to verify with.Estimated BMRBody Fat CalculatorCalculate estimated body fat from age and sex used by equation with this body fat calculator; review formula limits, source notes, and when to verify.Estimated body fatBody Surface Area CalculatorCalculate mosteller BSA from age and height with this body surface area calculator; review formula limits, source notes, and when to verify with.Mosteller BSABody Type CalculatorCalculate apparel body type from bust circumference and waist circumference with this body type calculator; review formula limits, source notes, and when.Apparel body typeBra Size CalculatorCalculate estimated bra size from underbust measurement and bust measurement with this bra size calculator; review formula limits, source notes, and when.Estimated bra sizeCalorie CalculatorCalculate estimated maintenance calories from age and sex used by equation with this calorie calculator; review formula limits, source notes, and when.Estimated maintenance caloriesCalories Burned CalculatorCalculate estimated calories burned from weight and weight unit with this calories burned calculator; review formula limits, source notes, and when.Estimated calories burnedCarbohydrate CalculatorCalculate carbohydrate from daily calorie target and carbohydrate with this carbohydrate calculator; review formula limits, source notes, and when.CarbohydrateConception CalculatorCalculate estimated ovulation date from first day of last period and regular cycle length with this conception calculator; review formula limits, source.Estimated ovulation dateDew Point CalculatorCalculate dew point from air temperature and temperature unit with this dew point calculator; review formula limits, source notes, and when to verify.Dew pointDue Date CalculatorCalculate estimated due date from dating method and first day of last period with this due date calculator; review formula limits, source notes, and when.Estimated due dateFat Intake CalculatorCalculate fat from daily calorie target and fat with this fat intake calculator; review formula limits, source notes, and when to verify with.FatGFR CalculatorCalculate estimated GFR from age and sex used by equation with this GFR calculator; review formula limits, source notes, and when to verify with.Estimated GFRHealthy Weight CalculatorCalculate healthy weight starts at from age and height with this healthy weight calculator; review formula limits, source notes, and when to verify.Healthy weight starts atHeat Index CalculatorCalculate heat index from air temperature and temperature unit with this heat index calculator; review formula limits, source notes, and when to verify.Heat indexIdeal Weight CalculatorCalculate devine estimate from age and sex used by equation with this ideal weight calculator; review formula limits, source notes, and when to verify.Devine estimateLean Body Mass CalculatorCalculate estimated lean body mass from age and sex used by equation with this lean body mass calculator; review formula limits, source notes, and when.Estimated lean body massMacro CalculatorCalculate protein from daily calorie target and protein with this macro calculator; review formula limits, source notes, and when to verify with.ProteinOne Rep Max CalculatorCalculate estimated 1RM from weight lifted and weight unit with this one rep max calculator; review formula limits, source notes, and when to verify.Estimated 1RMOverweight CalculatorCalculate BMI from age and height with this overweight calculator; review formula limits, source notes, and when to verify with a professional.BMIOvulation CalculatorCalculate estimated ovulation date from last period start date and average cycle length with this ovulation calculator; review formula limits, source.Estimated ovulation datePace CalculatorCalculate pace per mile from distance and distance unit with this pace calculator; review formula limits, source notes, and when to verify with.Pace per milePeriod CalculatorCalculate estimated next period start from last period start date and average cycle length with this period calculator; review formula limits, source.Estimated next period startPregnancy CalculatorCalculate estimated due date from first day of last period and regular cycle length with this pregnancy calculator; review formula limits, source notes.Estimated due datePregnancy Conception CalculatorCalculate estimated conception date from known date type and estimated due date with this pregnancy conception calculator; review formula limits, source.Estimated conception datePregnancy Weight Gain CalculatorCalculate pre-pregnancy BMI from height before pregnancy and height unit with this pregnancy weight gain calculator; review formula limits, source notes.Pre-pregnancy BMIProtein CalculatorCalculate adult RDA estimate from age and weight with this protein calculator; review formula limits, source notes, and when to verify with a professional.Adult RDA estimateSleep CalculatorCalculate recommended sleep from age group and plan from with this sleep calculator; review formula limits, source notes, and when to verify with.Recommended sleepTarget Heart Rate CalculatorCalculate age-predicted maximum heart rate from age with this target heart rate calculator; review formula limits, source notes, and when to verify.Age-predicted maximum heart rateTDEE CalculatorCalculate estimated TDEE from age and sex used by equation with this TDEE calculator; review formula limits, source notes, and when to verify with.Estimated TDEEWind Chill CalculatorCalculate wind chill from air temperature and temperature unit with this wind chill calculator; review formula limits, source notes, and when to verify.Wind chill
How to choose
Use a health calculator only for a general estimate. Health results should be interpreted with context from a qualified professional.
Health Calculators FAQ
Are health calculators medical advice?
No. These calculators provide educational estimates and do not diagnose, treat, or replace advice from a qualified health professional.
Why are health calculator assumptions important?
Many health formulas are designed for specific populations, ages, or measurement systems. The visible assumptions explain when a result may not apply.