Interactive tools
Calculators for everyday life
Three small tools that give you an instant reference value — no sign-up, no product recommendations. All values are based on established formulas.
Water intake
How much should you drink today? A reference value based on weight, activity and weather.
Open calculatorBMI
Body Mass Index with WHO classification — optionally with waist-to-height ratio.
Open calculatorCalorie needs
Basal metabolic rate and maintenance calories using the Mifflin-St Jeor formula.
Open calculatorAll results are general reference values and are no substitute for medical advice, diagnosis or treatment. If you have health concerns or are unsure, please talk to your doctor.
Personal evaluation
Take the Vital-Check — free of charge and without obligation
Find out which products suit you and your lifestyle. Reply via WhatsApp or email with your evaluation — no phone call needed.