What is ideal body weight (IBW)?

Ideal body weight is an estimate of the weight at which a person has the lowest risk of health problems, based primarily on height and gender. It was originally developed for medical dosing and later adopted for general health guidance. The most commonly used formulas are Devine, Robinson, and Hamwi. This calculator uses the Devine formula (developed in the 1970s), which is still widely used in clinical settings for weight-related drug dosing and as a weight management reference.

How is ideal body weight calculated?

The Devine formula for men: 50 kg + 2.3 kg for each inch (2.54 cm) over 5 feet (152.4 cm). For women: 45.5 kg + 2.3 kg for each inch over 5 feet. For example, a 5'10" (178 cm) man has IBW of 50 + (10 × 2.3) = 73 kg. This calculator also provides a healthy weight range based on BMI 18.5–24.9, which accounts for individual body frame differences and is generally preferred for non-medical use.

What is a healthy weight range for my height?

The World Health Organization defines a healthy BMI range of 18.5–24.9 kg/m². For a given height, the healthy weight range is BMI × (height in meters)². For example, a 170 cm (1.70 m) person has a healthy weight range of 53–72 kg. This range is more flexible than a single ideal weight because it accounts for different body frames, muscle mass, and fat distribution. For Nigerians, staying within the lower half of this range (BMI 20–23) may reduce metabolic risk optimally.

Does ideal body weight differ for Nigerians or Africans?

The Devine formula was developed primarily from Western populations. However, emerging evidence suggests that people of African descent may have higher bone density and lean mass for a given height, meaning a slightly higher ideal weight might be acceptable. More importantly, Nigerians often have different fat distribution (more abdominal). So while IBW is a useful reference, the healthy BMI range and waist circumference (<94 cm for men, <80 cm for women) are better health risk indicators.

How can I achieve my ideal body weight?

To reach a healthy weight: if underweight, increase nutrient-dense calories (beans, groundnuts, avocado, whole grains) and do strength training. If overweight, create a modest calorie deficit (300-500 kcal/day) through portion control (reduce garri, rice, bread), increase vegetables and lean protein, and walk 30–45 minutes daily. Nigerian-friendly changes: swap white rice for brown rice/unripe plantain, reduce fried foods, cook with less palm oil, and drink water instead of sweetened drinks.

What supplements support healthy weight management?

For weight gain: protein powders, creatine, and multivitamins can support muscle growth. For weight loss: green tea extract, glucomannan fibre, and omega-3 fatty acids may modestly help. However, supplements are not substitutes for diet and exercise. Always consult a doctor before starting supplements. Enavec Pharmacy stocks NAFDAC-approved products for both weight gain and weight loss goals.

Should I use ideal body weight or BMI?

For most individuals, BMI-based healthy weight range (18.5–24.9) is more useful than a single ideal weight number because it accounts for body frame variations. IBW is still used in clinical settings (e.g., for medication dosing, ventilator settings). For general health goals, aim to keep your weight within the healthy range shown by this calculator. If you are muscular, your weight may be above the range but still healthy — then focus on body fat percentage or waist circumference.

Ideal Body Weight Calculator — Devine Formula & Healthy Range | Enavec Pharmacy

🌿 Devine formula · Healthy BMI range · Free

Ideal Body Weight Calculator

Q: How can I achieve my ideal body weight?

To reach a healthy weight: if underweight, increase nutrient-dense calories (beans, groundnuts, avocado, whole grains) and do strength training. If overweight, create a modest calorie deficit (300-500 kcal/day) through portion control (reduce garri, rice, bread), increase vegetables and lean protein, and walk 30–45 minutes daily. Nigerian-friendly changes: swap white rice for brown rice/unripe plantain, reduce fried foods, cook with less palm oil, and drink water instead of sweetened drinks.

Q: What supplements support healthy weight management?

For weight gain: protein powders, creatine, and multivitamins can support muscle growth. For weight loss: green tea extract, glucomannan fibre, and omega-3 fatty acids may modestly help. However, supplements are not substitutes for diet and exercise. Always consult a doctor before starting supplements. Enavec Pharmacy stocks NAFDAC-approved products for both weight gain and weight loss goals.

Q: Should I use ideal body weight or BMI?

For most individuals, BMI-based healthy weight range (18.5–24.9) is more useful than a single ideal weight number because it accounts for body frame variations. IBW is still used in clinical settings (e.g., for medication dosing, ventilator settings). For general health goals, aim to keep your weight within the healthy range shown by this calculator. If you are muscular, your weight may be above the range but still healthy — then focus on body fat percentage or waist circumference.

Find your ideal weight using the clinically validated Devine formula. Also get your healthy weight range based on BMI guidelines.

✓ Medical reference

✓ Height & gender

✓ Instant results

✓ Nigeria-specific tips

Gender

Height (cm)

Centimeters (e.g., 170 cm)

Frequently Asked Questions

Understanding Ideal Body Weight & Health

Ideal body weight (IBW) was originally developed to standardise drug dosing and has become a common reference for weight goals. The Devine formula is still widely used in medicine and fitness. However, for most individuals, a healthy weight range (based on BMI 18.5–24.9) is more useful because it accounts for differences in body frame, muscle mass, and fat distribution. This calculator gives you both: a single IBW number and a personalised healthy weight range.

Why Nigerians Should Pay Attention to Weight Goals

Rising urbanisation has led to increased obesity rates across Nigeria, while underweight remains common in rural areas. Both extremes carry health risks. People of African descent often have higher bone density and lean mass, so the lower end of the healthy BMI range (20–23) may be optimal for reducing diabetes and hypertension risk. Waist circumference is also critical: men <94 cm, women <80 cm. Use this calculator as a starting point for realistic, sustainable weight management.

⚖️ Weight Management Support at Enavec Pharmacy
Protein supplements, appetite control, and metabolic health products.

Shop Now →

Beyond the Scale: Measuring Progress

Weight alone doesn't tell the whole story. Body composition (muscle vs fat), waist circumference, and how you feel matter more than hitting a specific number. If you're within 5 kg of your ideal weight but have good energy, normal blood pressure, and healthy blood sugar, you're likely in a good place. Focus on sustainable habits: balanced Nigerian meals with more vegetables, regular walking, and good sleep.

Recently Viewed

Ideal Body Weight Calculator

Frequently Asked Questions

Understanding Ideal Body Weight & Health

Why Nigerians Should Pay Attention to Weight Goals

Beyond the Scale: Measuring Progress

SUBSCRIBE TO OUR NEWSLETTER

Sign up for Newsletter

Subscribe to the weekly newsletter for all the latest updates

INFORMATON

HELP

SUPPORT

SUPPORT

Shopping cart

Recently Viewed

Ideal Body Weight Calculator — Devine Formula & Healthy Range | Enavec Pharmacy

Ideal Body Weight Calculator

Frequently Asked Questions

Understanding Ideal Body Weight & Health

Why Nigerians Should Pay Attention to Weight Goals

Beyond the Scale: Measuring Progress

SUBSCRIBE TO OUR NEWSLETTER

Sign up for Newsletter