For a 15-year-old, a healthy weight depends on height, sex, and puberty; use BMI-for-age percentiles with your measurements to gauge range.

At 5’9″, a healthy weight spans about 125–169 lb (56.8–76.5 kg) by adult BMI; waist size and body fat help confirm the fit.

For someone 5’2″, a healthy weight by BMI is about 101–137 lb (46–62 kg); body composition and waist size also matter.

At 4’11”, a healthy-weight adult typically weighs about 92–123 lb (42–56 kg) based on BMI 18.5–24.9.

At 6 feet, a healthy weight spans about 136–184 lb (62–83 kg) by BMI 18.5–24.9; aim for a waist under half your height (≤36 in) for lower risk.

At 5’8, a healthy weight for women is about 122–164 lb based on BMI; keeping waist under 35 inches lowers risk.

For a 5’8 male, a healthy weight is about 122–164 pounds based on BMI, with a waist under 40 inches lowering risk.

For a 5’10 male, a healthy weight is about 129–174 lb (58.5–78.9 kg) by BMI; keep waist under 35 in (half your height) to limit central fat risk.

At 5’6, a healthy weight range for adult women spans about 115–154 lb by BMI, with a waist under half your height (under 33 inches) as a handy check.

At 5’2, a healthy weight for adult women is ~101–136 lb (46–62 kg) based on BMI 18.5–24.9; aim near the midpoint if unsure.