🏋️ Ideal Weight Calculator

Calculate your ideal body weight based on height and gender.

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What is Ideal Weight Calculator?

This tool gives you a quick reference point for a "healthy" body weight based purely on your height, using a simplified version of the classic Broca index — one of the oldest rule-of-thumb methods doctors have used to eyeball healthy weight ranges long before BMI charts became common. It's not a diagnosis or a target you must hit exactly, but a useful anchor when you're setting a realistic weight goal.

Ideal Weight Formula

Base height factor: h = height in cm − 100
Men: Ideal Weight = h − (h × 0.10)
Women: Ideal Weight = h − (h × 0.15)

Healthy Range = Ideal Weight × 0.9 to Ideal Weight × 1.1

Worked Example

For a man who is 175 cm tall:

h = 175 − 100 = 75
Ideal Weight = 75 − (75 × 0.10) = 75 − 7.5 = 67.5 kg
Healthy Range = 60.75 kg to 74.25 kg

So a 175 cm man landing anywhere roughly between 61 kg and 74 kg would fall within this formula's suggested healthy band, with 67.5 kg as the single reference figure.

How to Use This Calculator

  1. Enter your height in centimetres.
  2. Click Calculate.
  3. Read your ideal weight figure along with the healthy weight range shown below it.

Things to Keep in Mind

Height-only formulas like this one ignore muscle mass, bone density, and body frame size, so a muscular athlete may sit well above this number while still being lean and healthy. It works best as a rough screening tool rather than a strict target — pairing it with a BMI check or a body fat estimate gives a fuller picture. If you're planning a significant weight change for medical reasons, loop in a doctor or dietitian rather than chasing this number alone.

💡 Tip: Use this figure alongside the BMI Calculator — if the two disagree noticeably, body composition (muscle vs. fat) is often the reason why.

📅 Last reviewed: July 2026 · Formulas verified against RBI/SEBI/IT Dept guidelines.