Health Kalkulators
12 interactive tools with transparent guidance and tested shared calculation logic.
BMI Kalkulator
Estimate body mass index from weight and height.
HealthBMR Kalkulator
Estimate basal metabolic rate using the Mifflin-St Jeor equation.
HealthTDEE Kalkulator
Estimate total daily energy expenditure from BMR and activity level.
HealthIdeal Weight Kalkulator
Estimate ideal body weight using the Devine formula.
HealthWaist to Height Ratio Kalkulator
Compare waist circumference with height.
HealthWater Intake Kalkulator
Estimate a simple daily water target from body weight.
HealthProtein Intake Kalkulator
Estimate a daily protein range using body weight and selected target.
HealthCalorie Deficit Kalkulator
Estimate daily calorie target from maintenance calories and desired deficit.
HealthHeart Rate Zone Kalkulator
Estimate a target heart-rate zone using percentage of age-predicted maximum.
HealthSleep Time Kalkulator
Count backwards in 90-minute sleep cycles from a wake time.
HealthPregnancy Due Date Kalkulator
Estimate a due date as 280 days after the first day of the last menstrual period.
HealthOvulation Kalkulator
Estimate ovulation date from cycle start and average cycle length.