185 free tools
Lifestyle Calculators
Free health tools for every need. All calculations happen in your browser. No signup, no tracking.
BMI Calculator
Body Mass Index with WHO categories
TDEE Calorie Calculator
BMR + activity: cut/maintain/bulk targets
Macro Calculator
Protein, carbs and fat targets + meal splits
Body Fat Percentage Calculator
US Navy tape-measure method estimate
Ovulation Calculator
Fertile window and ovulation date
Pregnancy Due Date Calculator
Due date, weeks and trimester timeline
Sleep Cycle Calculator
90-min cycles: best bedtime and wake time