Calculator category
Health calculators
Free health calculators that run in your browser with clear formulas, examples, FAQs, and related calculator links.
Find the right health calculator
This category groups related calculators so users and search engines can discover the best page faster. Start with the most relevant calculator, then use the related links on each page to move deeper into the topic.
All Health calculators
22 free calculators in this category.
Calculate body mass index from height and weight.
HealthCalorie CalculatorEstimate daily calories using the Mifflin-St Jeor equation.
HealthPregnancy Due Date CalculatorEstimate due date from last menstrual period.
HealthBody Fat CalculatorEstimate body fat percentage using a simple BMI-based method.
HealthIdeal Weight CalculatorEstimate ideal body weight using height.
HealthWater Intake CalculatorEstimate daily water intake from body weight.
HealthBMR CalculatorEstimate basal metabolic rate using weight, height, age, and sex.
HealthTDEE CalculatorEstimate total daily energy expenditure from BMR and activity level.
HealthMacro CalculatorSplit daily calories into protein, carbs, and fat targets.
HealthProtein CalculatorEstimate daily protein target from body weight and grams per kg.
HealthCalories Burned CalculatorEstimate calories burned using MET, body weight, and duration.
HealthTarget Heart Rate CalculatorEstimate target heart rate zone from age and intensity.
HealthSleep CalculatorEstimate wake-up or bedtime options based on 90-minute sleep cycles.
HealthBMI Prime CalculatorCalculate BMI Prime relative to the upper normal BMI limit.
HealthWaist to Height Ratio CalculatorCalculate waist-to-height ratio.
HealthOne Rep Max CalculatorEstimate one-rep max from lifted weight and reps.
HealthWalking Calorie CalculatorEstimate calories burned while walking.
HealthRunning Calorie CalculatorEstimate calories burned while running.
HealthHeart Rate Zone CalculatorEstimate training heart-rate zones from age.
HealthPregnancy Week CalculatorEstimate pregnancy week from last menstrual period date.
HealthIdeal Body Weight CalculatorEstimate ideal body weight using height and sex.
HealthArmy Body Fat CalculatorEstimate body fat using neck, waist, height, and sex inputs.