BMI (Imperial) = (703 × weight in lbs) ÷ (height in inches)². Normal range: 18.5–24.9.
5'10" at 175 lbs → BMI = 25.1 (just above normal). Ideal weight range: 129–174 lbs.
BMI categories: Under 18.5 = Underweight. 18.5–24.9 = Normal. 25–29.9 = Overweight. 30+ = Obese.
Reach for this calculator when you need a standardised health metric to discuss with a healthcare provider or to use as a baseline for a fitness programme. The result gives you a number that carries more meaning than subjective assessments.
The most common mistake is treating the result as a precise measurement rather than an evidence-based estimate. All body metric calculators have margins of error — use the result as a tracking baseline, not a clinical diagnosis.
A personal trainer uses the calculator with a new client to set a measurable starting point. Re-running the calculation at 4-week intervals provides an objective progress metric that supports motivation and programme adjustments.
18.5–24.9 is considered normal weight. 25–29.9 is overweight. 30+ is obese.
CalcPlanet – Free Online Calculators
725+ free calculators and 108 tools for math, money, health, and everyday life. Instant results, verified formulas, no sign-up.
By CalcPlanet Editorial · Reviewed against our Editorial Standards and Formula Sources.
CalcPlanet calculators are free, privacy-first, and formula-reviewed.
Editorial Standards · Formula Sources · Privacy · Terms · Contact
