Simulation

See When You Move Between BMI Categories

At 5 ft 8 in and 220 lb your BMI is about 33.5 (obese). Losing 1 lb per week, you would cross into the overweight range (BMI 30) in about 10 weeks and into the normal range (BMI 25) in roughly 32 weeks. The chart plots your BMI against the obese, overweight, and normal cutoff lines so you can see each milestone.

Results

Visualization

BodyStd provides educational estimates only, using established formulas such as the 3,500-calorie-per-pound rule and the Mifflin-St Jeor equation. These tools do not diagnose any condition and are not medical advice. Weight-loss results vary widely by individual. Consult a physician or registered dietitian before starting any diet, exercise, or weight-loss program.

How It Works

BMI is weight in pounds times 703 divided by height in inches squared. We compute your starting BMI, then walk weight down by your weekly pace month by month and recompute BMI at each step. The weight at each category cutoff comes from rearranging the formula: weight = BMI x height^2 / 703. Weeks to a cutoff is (current weight - cutoff weight) / weekly pace. The chart overlays your BMI line on the 30, 25, and 18.5 reference lines.

What Should You Do?

BMI is a quick screening tool, not a full health verdict; it ignores muscle mass and fat distribution. Use the milestone weeks as motivation, not a medical target. Moving from obese to overweight and then to normal usually brings the biggest health gains at the first steps. Pair the pace with habits you can keep, and remember that waist size and fitness matter alongside the number.

Frequently Asked Questions

Why does BMI ignore muscle?

BMI uses only height and weight, so a muscular person can read overweight while having low body fat. It is a screen, not a diagnosis.

What do the cutoff lines mean?

30 is the obese threshold, 25 the overweight threshold, and 18.5 the bottom of the normal range, per standard BMI bands.

How accurate are the milestone weeks?

They assume a steady weekly pace with no plateaus. Real progress wobbles, so treat them as estimates.

Is reaching normal BMI always the goal?

Not for everyone; athletes and older adults may be healthy outside the range. Talk with a clinician about your personal target.

Can I use this if I am already normal?

Yes. If you start below 25, the overweight and normal weeks show 0 and the chart just projects your BMI from the pace you enter.