TaekwondoKing BMI & Flexibility Tracker
BMI Calculator
Your BMI Result
🟢 Underweight: < 18.5
🟡 Normal: 18.5 – 24.9
🟠 Overweight: 25 – 29.9
About TaekwondoKing BMI Calculator
TaekwondoKing BMI calculator tools are simple ways to check your Body Mass Index (BMI). They help you know if your weight is healthy for your height. These tools are used worldwide by fitness enthusiasts, healthcare professionals, and nutritionists.
A Body Mass Index (BMI) calculator is a common tool that helps determine if an adult has a suitable weight for their height. It is based on a straightforward formula that uses a person’s height and weight.
How to Use a BMI Calculator
You can find public online calculators from health agencies like the CDC Adult BMI Calculator or the NHS BMI calculator. To use these, you will need to enter your height and weight, which can be in metric (kilograms and meters) or US customary (pounds and inches) measurements.
BMI Ranges for Adults
For most adults (age 20 and older), the BMI result falls into one of the following standard categories established by the World Health Organisation:
| BMI Range | Classification | Health Risk Notes |
| Below 18.5 | Underweight | Nutrient deficiency risk; gain weight if needed. |
| 18.5 – 24.9 | Healthy/Normal | Lowest disease risk; maintain this. |
| 25.0 – 29.9 | Overweight | Increased risk of heart disease, diabetes. |
| 30.0 – 34.9 | Obesity Class 1 | High risk; lifestyle changes recommended. |
| 35.0 – 39.9 | Obesity Class 2 | Very high risk; medical help advised. |
| 40.0 and above | Obesity Class 3 | Severe risk; urgent intervention needed. |
Limitations of BMI
It’s crucial to understand that BMI is just a screening tool and does not directly measure body fat or indicate overall health. It should always be combined with other health evaluations, like waist measurements, blood pressure readings, and cholesterol levels.
Muscle Mass: People with a lot of muscle, like athletes and bodybuilders, may show a high BMI even if they don’t have extra body fat since muscle is heavier than fat.
Age, Sex, and Ethnicity: The link between BMI and health risks can differ among various groups of people. For instance, the usual cutoff points may not work as well for specific ethnicities or older adults.
Fat Distribution: BMI does not show where fat is located in the body. Having too much fat around the belly is associated with more health issues than fat in other areas, such as the hips.
Talk to a healthcare professional for a complete health check to discuss your weight and any possible health concerns.
How Do I Use a BMI Calculator?
Using the TaekwondoKing BMI calculator is easy. Go to a website with BMI tools.
- Enter your height (in feet, inches, or meters)
- Add your weight (in pounds or kilograms)
- Click Calculate to see your BMI
The BMI formula divides weight (kg) by height (m²) to estimate body fat levels. The result shows in seconds.
It works on smartphones, laptops, or desktop computers. No downloads are needed. You can try it anytime, anywhere.
What You Will Need
To use the TaekwondoKing BMI calculator, you need two things:
- Your height (use a measuring tape or a doctor’s measurement)
- Your weight (use a digital scale for accuracy)
That’s all you need. The tool does the rest using the BMI classification system developed by the World Health Organization (WHO).
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BMI Categories
BMI categories show what your number means. It is the standard for adults. These categories help you understand your health.
| BMI (kg/m²) | Category | What it Means |
| < 18.5 | Underweight | You weigh too little. You might need to eat more. |
| 18.5 – 24.9 | Normal Weight | This is a healthy weight. Keep up the good habits! |
| 25.0 – 29.9 | Overweight | You weigh a bit too much. Try to eat healthier. |
| ≥ 30.0 | Obesity | You weigh too much. This can cause health problems. |
| 30.0 – 34.9 | Obesity Class I | This is the first level of obesity. It’s good to make changes now. |
| 35.0 – 39.9 | Obesity Class II | This is a higher level. It’s important to talk to a doctor. |
| ≥ 40.0 | Obesity Class III (Severe Obesity) | This is the highest level. Seek medical help. |
Why Our BMI Calculator Is the Best?
Our BMI calculator is fast and accurate.
- Free and easy to use
- Simple, user-friendly design
- Results in one click with a PDF download option
- Works on Windows, macOS, Android, and iOS devices
- No sign-up required
- Privacy protected – your data stays safe
- Trusted by users worldwide for health monitoring.
Why Use a BMI Calculator?
A BMI calculator helps you check your health status.
- Shows if your weight is healthy for your height
- Helps you set fitness or weight loss goals
- Used by doctors, dietitians, and fitness trainers
- Quick, simple, and free to access
- Helps prevent obesity-related health risks like diabetes, heart disease, and hypertension
Knowing your BMI helps you stay healthy and motivated.
Benefits of BMI Calculator Tools
The TaekwondoKing BMI calculator tools offer many benefits:
- Track your overall health
- Useful for diet planning and fitness programs
- Free, fast, and easy-to-understand results
- Accessible anywhere, anytime
- Encourages healthy lifestyle habits
- Works as a guide for weight management
- Suitable for adults of all ages.
Our Happy Customers’ Cities
From Chicago to Miami, users of TaekwondoKing’s online tools turn living rooms and garages into personal dojos. On taekwondoking.com, members complete everything from flexibility tests to reaction speed drills, then share their results with pride. It’s heartwarming to see how tools like the Smart Flexibility Tester or Training Roadmap Generator empower people across cities to grow stronger and more confident.
Whether you’re logging a sit‑and‑reach test or customising a training plan, these tools make progress feel real, and many users send in pictures or notes saying how much they’ve improved.
| Country | Cities |
| United States | New York, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Antonio, San Diego, Dallas, San Jose, Austin, Jacksonville, Fort Worth, Columbus, Indianapolis, Charlotte, San Francisco, Seattle, Denver, Washington D.C., Boston, El Paso, Detroit, Nashville, Portland, Memphis, Oklahoma City, Las Vegas, Louisville, Baltimore, Milwaukee, Albuquerque, Tucson, Fresno, Sacramento, Mesa, Kansas City, Atlanta, Colorado Springs, Raleigh, Omaha, Miami, Virginia Beach, Long Beach, Oakland, Minneapolis, Tulsa, Wichita, New Orleans, Arlington, Cleveland, Tampa, Aurora, Anaheim, Honolulu |
| Canada | Toronto, Montreal, Vancouver, Calgary, Edmonton, Ottawa, Winnipeg, Quebec City, Hamilton, Kitchener, London, Victoria, Halifax, St. Catharines, Oshawa, Windsor, Saskatoon, Regina, St. John’s, Barrie, Kelowna, Abbotsford, Guelph, Kingston, Thunder Bay, Moncton, Sudbury, Lethbridge, Brantford, Nanaimo, Fredericton |
| France | Paris, Marseille, Lyon, Toulouse, Nice, Nantes, Strasbourg, Montpellier, Bordeaux, Lille, Rennes, Reims, Le Havre, Saint-Étienne, Toulon, Grenoble, Dijon, Angers, Nîmes, Villeurbanne, Clermont-Ferrand, Le Mans, Aix-en-Provence, Brest, Tours, Amiens, Limoges, Metz, Besançon, Perpignan, Orléans, Caen, Boulogne-sur-Mer, Rouen, Mulhouse, Nancy, Argenteuil, Montreuil, Saint-Denis |
| Germany | Berlin, Hamburg, Munich, Cologne, Frankfurt, Stuttgart, Düsseldorf, Dortmund, Essen, Leipzig, Bremen, Dresden, Hanover, Nuremberg, Duisburg, Bochum, Wuppertal, Bielefeld, Bonn, Münster, Karlsruhe, Mannheim, Augsburg, Wiesbaden, Gelsenkirchen, Mönchengladbach, Braunschweig, Chemnitz, Kiel, Aachen, Halle, Magdeburg, Freiburg, Krefeld, Lübeck, Rostock, Oldenburg, Osnabrück, Paderborn, Heidelberg |
| Italy | Rome, Milan, Naples, Turin, Palermo, Genoa, Bologna, Florence, Bari, Catania, Venice, Verona, Messina, Padua, Trieste, Taranto, Brescia, Prato, Reggio Calabria, Modena, Parma, Perugia, Livorno, Cagliari, Foggia, Rimini, Salerno, Ferrara, Sassari, Latina, Monza, Syracuse, Pescara, Bergamo, Forlì, Trento, Vicenza, Terni, Bolzano, Novara, Piacenza, Ancona, Andria, Udine, Arezzo, La Spezia |
| Netherlands | Amsterdam, Rotterdam, The Hague, Utrecht, Eindhoven, Groningen, Tilburg, Almere, Breda, Nijmegen, Apeldoorn, Enschede, Haarlem, Arnhem, Zaanstad, Amersfoort, ‘s-Hertogenbosch, Haarlemmermeer, Maastricht, Leiden, Dordrecht, Zoetermeer, Ede, Zwolle, Emmen, Westland, Deventer, Delft, Leeuwarden, Alkmaar, Heerlen, Venlo, Helmond, Hilversum, Amstelveen, Hengelo, Purmerend, Roosendaal, Schiedam, Spijkenisse |
| Poland | Warsaw, Kraków, Łódź, Wrocław, Poznań, Gdańsk, Szczecin, Bydgoszcz, Lublin, Białystok, Katowice, Gdynia, Częstochowa, Radom, Toruń, Sosnowiec, Rzeszów, Kielce, Gliwice, Zabrze, Olsztyn, Bielsko-Biała, Bytom, Rybnik, Ruda Śląska, Tychy, Opole, Gorzów Wielkopolski, Elbląg, Płock, Wałbrzych, Włocławek, Tarnów, Chorzów, Koszalin, Kalisz, Legnica, Grudziądz, Jaworzno, Słupsk |
| Spain | Madrid, Barcelona, Valencia, Seville, Zaragoza, Málaga, Murcia, Palma, Las Palmas de Gran Canaria, Bilbao, Alicante, Córdoba, Valladolid, Vigo, Gijón, L’Hospitalet de Llobregat, Vitoria-Gasteiz, A Coruña, Granada, Elche, Oviedo, Badalona, Terrassa, Sabadell, Jerez de la Frontera, Móstoles, Alcalá de Henares, Cartagena, Fuenlabrada, Almería, Leganés, Getafe, Burgos, Salamanca, Huelva, Albacete, Castellón de la Plana, Cádiz, Logroño, Santa Cruz de Tenerife, Badajoz, Lleida, Jaén, Tarragona, Ourense, Algeciras, Donostia-San Sebastián |
| Sweden | Stockholm, Gothenburg, Malmö, Uppsala, Västerås, Örebro, Linköping, Helsingborg, Jönköping, Norrköping, Lund, Umeå, Gävle, Borås, Södertälje, Eskilstuna, Halmstad, Karlstad, Växjö, Sundsvall, Luleå, Trollhättan, Östersund, Falun, Kalmar, Kristianstad, Skövde, Karlskrona, Uddevalla, Lidköping, Motala, Landskrona, Köping, Strängnäs, Falkenberg, Trelleborg, Ängelholm, Hässleholm, Borlänge, Falun, Nyköping, Varberg, Örnsköldsvik, Enköping, Västervik, Ystad |
| United Kingdom | London, Birmingham, Glasgow, Liverpool, Bristol, Manchester, Sheffield, Leeds, Edinburgh, Cardiff, Leicester, Bradford, Coventry, Nottingham, Newcastle upon Tyne, Belfast, Kingston upon Hull, Stoke-on-Trent, Derby, Wolverhampton, Swansea, Southampton, Portsmouth, Plymouth, Norwich, Reading, Preston, York, Southend-on-Sea, Peterborough, Brighton and Hove, Bournemouth, Milton Keynes, Aberdeen, Warrington, Doncaster, Oxford, Poole, Ipswich, Guildford, Cambridge, Middlesbrough, Blackpool, Wrexham, Luton, Eastbourne, Chelmsford, Colchester |
Who Should Not Use This Tool?
Some people should avoid BMI calculators:
- Children under 18 (need pediatric growth charts)
- Pregnant women (BMI gives inaccurate results during pregnancy)
- Bodybuilders or very muscular athletes (muscle mass may classify them as “overweight”)
- People with chronic health issues should consult a doctor or a nutrition expert
Remember: BMI is a screening tool, not a diagnostic test. Always check with a health professional for medical advice.
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Try the BMI Calculator for All
TaekwondoKing BMI calculator tools are a great way to check your health and fitness level. They’re simple, free, and work for most adults.
Use a BMI calculator today to know your number and start your journey toward better health and wellness!
FAQs
Fatty liver disease is often linked to being overweight (BMI 25.0-29.9) or obese (BMI ≥ 30.0). However, some people with a normal BMI can also have fatty liver, known as “lean NAFLD.”
For an adult, a height of 170 cm (1.7 m) and a weight of 70 kg result in a BMI of 24.2 kg/m^2, which is in the normal weight category.
To calculate BMI, you need your weight and height.
The BMI formula for kilograms and meters is: BMI = weight (kg) / [height (m)]2. First, measure your weight in kilograms. Then, measure your height in meters and square that number (multiply it by itself). Finally, divide your weight by your squared height.
For adults aged 65 and older, a slightly higher BMI, potentially in the overweight category (BMI 25-30 kg/m^2), may be linked to better health and survival rates compared to a “normal” BMI for younger adults. It’s best to discuss this with a doctor.
To know your correct BMI, accurately measure your weight in kilograms and your height in meters. Then, use the formula: BMI = weight (kg) / [height (m)]2. You can also use online BMI calculators. Keep in mind that BMI is a screening tool, not a full health assessment.
BMI for age charts are used for children and teens (ages 2-19). You plot your child’s BMI on a growth chart based on their sex and age. The chart shows percentiles, indicating how their BMI compares to others of the same age and sex. For example, a BMI at the 80th percentile means their BMI is higher than 80% of children their age and sex. Categories like “underweight,” “healthy weight,” “overweight,” and “obesity” are defined by specific percentile ranges.
For adults (20 years and older), BMI categories (underweight, normal, overweight, and obese) are generally consistent regardless of age. For children and teens, BMI is interpreted using age- and sex-specific percentile charts.
For a 5’2″ (157 cm) female, a healthy weight typically falls in the range of 104 to 135 pounds (47 to 61 kg), corresponding to a BMI of 18.5 to 24.9.
There isn’t one “correct” weight and height for age in kg, as it varies greatly by individual. For adults, BMI is used to assess weight relative to height. For children and teens, growth charts (which plot weight and height against age and sex) are used to determine if they are growing typically.