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Miraç Özdemir

Category

Health & Wellbeing

Body mass index, ideal weight, basal metabolic rate and daily calories, pregnancy week and due date, and exercise calorie burn calculators.

13 tools4 subcategories

Subcategories

Select a topic to directly access specialized calculators in that domain.

  • Body Measurements & Weight

    7 tools

    Body mass index (BMI), ideal weight range, waist-to-hip ratio and body fat estimates, with BMI classified into the World Health Organization categories.

  • Calories & Nutrition

    5 tools

    Basal metabolic rate using the Mifflin-St Jeor equation, daily calorie needs by activity level and calorie targets for weight goals.

  • Pregnancy & Fertility

    3 tools

    Estimated due date by Naegele's rule from the last menstrual period, current pregnancy week and month, and ovulation and fertile window estimates from cycle length.

  • Sports & Exercise

    5 tools

    Calories burned by MET value for running, walking, cycling and other sports, target heart rate zones from maximum heart rate, and running pace from distance and time.

Tools in this category

Showing 13 tools.

  • Calories & Nutrition

    BMR and Daily Calorie Needs Calculator

    Calculate your basal metabolic rate (BMR) with the Mifflin-St Jeor equation and your daily calorie needs from your activity level, plus daily calories for a weight loss or gain goal.

    Calculate

  • Body Measurements & Weight

    Body Fat Percentage Calculator (US Navy Method)

    Estimate your body fat percentage from height, neck, waist and (for women) hip circumference with the US Navy (Hodgdon-Beckett) method, plus fat mass and lean mass.

    Calculate

  • Body Measurements & Weight

    Body Mass Index (BMI) Calculator

    Calculate your body mass index (BMI) from weight and height, see your WHO class, the healthy weight range for your height and how much weight separates you from it.

    Calculate

  • Pregnancy & Fertility

    Ovulation and Fertile Window Calculator

    Estimate your ovulation day, fertile window (most fertile days) and next period from the first day of your last period and your cycle length.

    Calculate

  • Pregnancy & Fertility

    Pregnancy Week and Due Date Calculator

    Calculate your estimated due date (Naegele's rule), how many weeks pregnant you are, the days left and your trimester dates from the first day of your last period.

    Calculate

  • Sports & Exercise

    Running Pace and Finish Time Calculator

    Calculate your running pace per kilometre and average speed from distance and time, or your 5K, 10K, half marathon and marathon finish time from a target pace.

    Calculate

  • Sports & Exercise

    Target Heart Rate Zone Calculator (Karvonen)

    Estimate your maximum heart rate from your age and the target heart rates for 50–100 % intensity, optionally with your resting heart rate using the Karvonen method.

    Calculate

  • Body Measurements & Weight

    Waist-to-Hip Ratio Calculator (WHO Cut-offs)

    Calculate your waist-to-hip ratio from waist and hip circumference, compare it with the WHO cut-off and, if you enter your height, see your waist-to-height ratio.

    Calculate

About this category & regulations

Simple formulas have long been used for questions such as whether your weight is in a healthy range, how many calories you burn a day, your running pace, or which week of pregnancy you are in. This section collects calculators that apply those formulas openly; the aim is a general idea, not a diagnosis.

Subcategories

  • Pregnancy & Fertility (2 tools): Estimated due date by Naegele's rule from the last menstrual period, current pregnancy week and month, and ovulation and fertile window estimates from cycle length.
  • Calories & Nutrition (3 tools): Basal metabolic rate using the Mifflin-St Jeor equation, daily calorie needs by activity level and calorie targets for weight goals.
  • Sports & Exercise (4 tools): Calories burned by MET value for running, walking, cycling and other sports, target heart rate zones from maximum heart rate, and running pace from distance and time.
  • Body Measurements & Weight (5 tools): Body mass index (BMI), ideal weight range, waist-to-hip ratio and body fat estimates, with BMI classified into the World Health Organization categories.

How the calculation works

  • Body mass index: BMI = weight (kg) ÷ height² (m²); the classes follow World Health Organization (WHO) criteria.
  • Basal metabolism: the Mifflin-St Jeor equation estimates daily resting energy use from age, height, weight and sex; daily calorie need is that multiplied by an activity level.
  • Exercise: target heart-rate zones come from estimated maximum heart rate by age (Karvonen method), running pace from distance and time; body fat is estimated from tape measurements.
  • Pregnancy: the estimated due date is calculated from the last menstrual period with Naegele's rule.

Things to watch

  • BMI does not distinguish muscle mass, age or sex; it can be misleading for athletes and children.
  • The formulas rest on population averages and individual differences are large; real results can deviate noticeably from the estimate.
  • Age, height and weight are your inputs; accuracy depends on them.

Results are estimates and do not replace medical advice, diagnosis or treatment; consult your doctor or dietitian for health decisions.

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