There’s no single perfect weight that applies to everyone at a given height. Your healthiest weight depends on your body composition, age, sex, ethnicity, and how your body distributes fat. That said, there are several reliable ways to estimate a healthy weight range for your body, and most of them take less than a minute.
A Quick Starting Point: BMI
Body mass index is the most common tool for estimating a healthy weight. You calculate it by dividing your weight in kilograms by your height in meters squared, or you can use any free online calculator. The CDC defines a healthy BMI as 18.5 to 24.9 for adults 20 and older. Below 18.5 is considered underweight, 25 to 29.9 is overweight, and 30 or above falls into the obesity range.
To translate that into pounds, here’s what a “healthy” BMI range looks like for a few common heights:
- 5’4″: roughly 108 to 145 lbs
- 5’7″: roughly 118 to 159 lbs
- 5’10”: roughly 129 to 174 lbs
- 6’0″: roughly 136 to 184 lbs
That’s a wide range for each height, which is the point. Two people at the same height can be perfectly healthy at very different weights.
Why BMI Doesn’t Tell the Whole Story
BMI treats all weight the same, whether it comes from muscle, bone, or fat. Muscle and bone are denser than fat, so a person who lifts weights regularly or has a naturally heavy frame can land in the “overweight” category while carrying very little excess fat. The reverse is also true: someone with a normal BMI but low muscle mass may carry more body fat than their number suggests, especially as they age and lose bone density.
BMI also uses the same cutoffs for all ethnicities, which doesn’t reflect biological reality. The World Health Organization uses lower thresholds for Asian populations: a BMI of 23 or above is considered overweight (instead of 25), and obesity starts at 25 to 27.5 (instead of 30). This is because people of Asian descent tend to develop metabolic complications like high blood sugar and elevated blood pressure at lower body weights. If you’re of South Asian, East Asian, or Southeast Asian descent, the standard BMI chart may underestimate your risk.
The Height-Based Formula
Doctors sometimes use a simpler calculation called ideal body weight, originally developed for medication dosing but useful as a rough benchmark. The formula works like this:
- Women: Start at 100 lbs for 5 feet tall, then add 5 lbs for each additional inch.
- Men: Start at 110 lbs for 5 feet tall, then add 5 lbs for each additional inch.
A more precise clinical version, used by the CDC, calculates it as 45.5 kg for women or 50 kg for men at 5 feet, plus 2.3 kg for each inch above that. So a 5’6″ woman would get an ideal weight of about 130 lbs, and a 5’10” man would land around 166 lbs. These numbers represent a midpoint, not a ceiling. Most clinicians consider a range of 10% above or below the result to be healthy.
Different formulas exist for this calculation, and they don’t always agree. The Devine formula tends to underestimate ideal weight in women, while the Robinson formula performs poorly for tall men. No single formula captures every body type, which is why treating these numbers as estimates rather than targets makes more sense.
What Your Waist Measurement Reveals
Where you carry fat matters at least as much as how much you weigh. Fat stored around your midsection, surrounding your internal organs, poses more metabolic risk than fat stored in your hips and thighs. This is why waist circumference is one of the most useful measurements you can take at home.
The WHO sets the high-risk threshold at above 35 inches (88 cm) for women and above 40 inches (102 cm) for men. If your waist exceeds these numbers, your risk of heart disease, type 2 diabetes, and high blood pressure goes up regardless of what the scale says. To measure correctly, wrap a tape measure around your bare abdomen just above your hip bones, at roughly the level of your belly button, and read it after a normal exhale.
Research published in the Journal of the American Heart Association found that a larger waist paired with smaller hips is a particularly strong predictor of early death, while people with a smaller waist and larger hips had the lowest risk. In that study, women with the largest waists had more than double the risk of death from any cause compared to women with average waists. For men, the increase was 74%. Interestingly, for both sexes, larger hips were protective as long as waist size stayed moderate.
Body Fat Percentage: A Better Measure
If you want a more accurate picture than BMI or a formula can give you, body fat percentage gets closer to what actually matters for health. A healthy range is 18 to 24% for men and 25 to 31% for women, according to guidelines referenced by Baylor College of Medicine. Athletes typically fall well below these ranges, while body fat above them correlates with increased health risks.
You can estimate your body fat percentage using a bioelectrical impedance scale (the kind that sends a mild current through your feet), skinfold calipers, or a DEXA scan, which is the most accurate option. Gym-quality scales and calipers aren’t perfectly precise, but they’re useful for tracking changes over time. If your body fat percentage falls within the healthy range, your weight is likely fine even if your BMI looks high.
Your Weight on the Scale vs. Your Metabolic Health
Some people carry extra weight without developing the metabolic problems typically associated with it. Researchers call this “metabolically healthy obesity,” defined as having obesity by BMI standards but maintaining normal blood pressure, healthy blood sugar, and balanced cholesterol levels. However, research from the American College of Cardiology suggests this state may not be as protective as it sounds. People who are metabolically healthy but obese still show signs of subclinical heart damage at higher rates than people at lower weights, and many eventually develop metabolic problems over time.
The flip side is also important. You can have a normal BMI and still be metabolically unhealthy if you have high blood pressure, elevated blood sugar, low levels of protective cholesterol, or high triglycerides. Two or more of these markers signal metabolic risk regardless of your weight. This is why your “perfect” weight isn’t just a number on a scale. It’s a combination of where your body sits across several measurements.
How to Find Your Own Target
Rather than chasing one number, use multiple data points together. Start with your BMI to get a general range, then measure your waist circumference to check where your fat is distributed. If you have access to body fat testing, that adds another layer of useful information. Factor in your ethnicity, since standard cutoffs may not apply to you. And consider your age: research consistently shows that adults over 65 tend to have the lowest mortality rates at BMI levels slightly above 25, in the range traditionally labeled “overweight.” Carrying a small amount of extra weight in older age appears to offer a buffer during illness or injury.
Your healthiest weight is one where your blood pressure, blood sugar, and cholesterol are in healthy ranges, your waist measurement falls below the risk threshold, you can move and exercise without joint pain, and you can maintain that weight without extreme restriction. For most people, that weight falls somewhere in the middle of the BMI healthy range for their height, give or take 10 to 15 pounds depending on muscle mass and frame size.