Calculate your Body Mass Index (BMI) to assess if you're at a healthy weight. Our free BMI calculator works with both metric and imperial units and provides personalized health insights.
BMI is basically a quick way to see if your weight makes sense for your height. Think of it as a starting point - not the final answer. It takes your weight and height, does some math, and gives you a number that puts you in a category.
The formula? BMI = weight (kg) ÷ height (m)² - but don't worry, our calculator does the math for you. It's been around since the 1800s, so it's definitely not new.
Might mean you're not eating enough, or could signal an underlying health issue. Worth checking with a doctor.
The "sweet spot" where most health risks are lowest. But remember, it's just one piece of the puzzle.
Higher chance of heart problems and diabetes, but plenty of healthy people fall here too, especially athletes.
Significantly higher health risks. Definitely worth talking to a doctor about, but remember - you're more than just a number.
Nope, not really. BMI works okay for average people, but it's pretty useless for athletes, bodybuilders, or anyone with more muscle than usual. If you're pregnant, elderly, or from certain ethnic backgrounds, take BMI with a grain of salt. Your doctor knows way more about your health than any number can tell you.
Most health experts say 18.5 to 24.9 is the sweet spot, but honestly? There's no magic number. Some people feel amazing at 23, others feel their best at 26. Your ideal BMI depends on your body type, muscle mass, and how you actually feel day to day.
Once a month is plenty - your BMI doesn't change overnight. If you're trying to lose or gain weight, maybe check more often, but don't obsess over tiny daily changes. Your weight naturally fluctuates based on water, food, hormones, and even the time of day you step on the scale.
First, don't panic. BMI is just one data point. If you're concerned, chat with your doctor or a dietitian who can look at the bigger picture. Focus on building healthy habits - eating well, moving more, sleeping better. The number will follow if it needs to, but your health is about so much more than BMI.