AMTake’s free online health tools turn your measurements into clear, evidence-based insight. Estimate your BMR and TDEE, body-fat percentage, ideal weight, heart-rate training zones, blood pressure category, cholesterol ratios and type-2 diabetes risk — or plan a pregnancy with due-date, weight-gain and ovulation calculators. Each tool draws on established medical formulas and guidelines, shows its working across several methods, and gives plain-language guidance you can act on. Everything runs privately in your browser with no sign-up, and you can download or print a report. These calculators are for information and education, not a substitute for professional medical advice.
Blood Pressure Calculator
Free blood pressure calculator: classify your systolic/diastolic reading by ACC/AHA category, with…
BMR & TDEE Calculator
Calculate BMR and TDEE with Mifflin, Harris–Benedict, Katch-McArdle and Cunningham. See TDEE…
Body Fat Calculator
Estimate body-fat % with the U.S. Navy and YMCA methods, plus lean…
Cholesterol Ratio Calculator
Free cholesterol ratio calculator: total-to-HDL ratio, non-HDL and Friedewald LDL with category…
Diabetes Risk Calculator
Free diabetes risk calculator using the validated FINDRISC score. Estimate your 10-year…
Heart Rate Calculator
Calculate maximum heart rate, personalised training zones, the fat-burning zone and cardio…
Ideal Weight Calculator
Find your ideal weight by the Devine, Robinson, Miller and Hamwi formulas…
Ovulation Calculator
Free ovulation calculator: estimate your ovulation date, 6-day fertile window, most fertile…
Pregnancy Due Date Calculator
Free pregnancy due date calculator using your last period. Get your estimated…
Pregnancy Weight Gain Calculator
Free pregnancy weight gain calculator using IOM guidelines and your pre-pregnancy BMI.…
Sleep Calculator
Work out the best bedtime or wake-up time using 90-minute sleep cycles,…
Water Intake Calculator
Calculate your daily water intake from body weight, exercise, climate and pregnancy…