Check if your weight falls above the healthy range for your height.
Units
cm
kg
BMI & Status
27.8BMI
Overweight
You are overweight. Your weight is 8.7 kg above the healthy range.
BMI CategoryOverweight
Healthy Weight Range56.7–76.3 kg
Above Range8.7 kg
Target Weight56.7 kg
Overweight is defined as BMI 25–29.9, while obesity begins at BMI 30 or higher. BMI is a screening tool that doesn't account for muscle, bone density, age, or fitness. Consult a healthcare professional for personalised health advice.
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What is the Overweight Calculator?
An overweight calculator uses Body Mass Index (BMI) to assess whether your weight falls above, below, or within the healthy range for your height. Overweight is defined as a BMI between 25 and 29.9; obesity begins at BMI 30 or higher. The calculator compares your actual weight to the healthy range and shows you exactly how many kilograms or pounds you are above or below the target zone. It's a practical screening tool used by health professionals worldwide.
How it works
Enter your height in centimetres or feet and inches, then enter your weight in kilograms or pounds. The calculator applies the BMI formula (weight ÷ height²) and places you in one of four categories: underweight (BMI under 18.5), normal weight (18.5–24.9), overweight (25–29.9), or obese (30 or higher). It also calculates how many kilograms or pounds you are above or below the healthy range and suggests your target weight to reach the normal category.
BMI = weight (kg) ÷ [height (m)]² | Difference from healthy range = |actual weight – healthy range boundary|
BMI is calculated by dividing your weight in kilograms by the square of your height in metres. For imperial units, the formula is BMI = [weight (lb) ÷ height (in)²] × 703. The healthy range (BMI 18.5–24.9) is derived from the same formula by setting the bounds and solving for weight. If you're above BMI 25, the calculator shows how many kilograms or pounds you exceed the upper healthy boundary. If you're below BMI 18.5, it shows how far you are below the lower boundary.
Examples
Input
Result
Notes
Height: 175 cm, Weight: 85 kg
BMI: 27.8 (Overweight). Healthy range: 56.7–76.3 kg. You are 8.7 kg above the healthy range.
At this height and weight, you fall into the overweight category. Losing about 9 kg would bring you to the upper boundary of the healthy range.
Height: 5'9" (175 cm), Weight: 200 lb (90.7 kg)
BMI: 29.5 (Overweight). Healthy range: 125–168 lb. You are 32 lb above the healthy range.
Just under the obese threshold (BMI 30). A modest weight reduction of 32 lb would place you at the top of the healthy range.
Height: 165 cm, Weight: 48 kg
BMI: 17.6 (Underweight). Healthy range: 50.4–67.7 kg. You are 2.4 kg below the healthy range.
Your weight is below the healthy range. Gaining 2–3 kg of lean muscle would improve your BMI classification.
How to use the Overweight Calculator
Choose your preferred unit system—metric (cm, kg) or imperial (ft, lb)—using the toggle.
Enter your height accurately, without shoes, measured against a wall.
Enter your current weight on an accurate scale, ideally at the same time each day.
The calculator instantly displays your BMI, category, and how far you are from the healthy range.
Check your target weight to see what weight would bring you into the normal BMI category.
If overweight or underweight, consider consulting a doctor or registered dietitian for a personalised plan.
Benefits
Instant BMI calculation and categorisation—know whether you're underweight, normal, overweight, or obese.
See exactly how many kilograms or pounds you are above or below the healthy weight range.
Supports metric and imperial units; no manual conversion needed.
Free, private, and no account required; your data is not stored or tracked.
Shows your target weight to help you set realistic health goals.
Based on the same BMI standards used by doctors, the WHO, and health agencies worldwide.
Tips & common mistakes
Common mistakes
Confusing overweight (BMI 25–29.9) with obese (BMI 30+); they are distinct categories with different health implications.
Using outdated or inaccurate measurements; weigh yourself on a calibrated scale and measure height without shoes.
Assuming BMI tells the whole story—athletes and muscular individuals may have a high BMI but low body fat; BMI doesn't account for muscle vs. fat.
Ignoring the health risks of being overweight while assuming you're only slightly above healthy; gradual reduction is still worthwhile.
Tips
Weigh yourself weekly or monthly rather than daily to avoid fluctuations from water retention and meal timing.
If you are overweight or obese, aim for a gradual loss of 1–2 pounds (0.5–1 kg) per week, which is safe and sustainable.
Combine weight loss with cardio exercise and strength training for better long-term health outcomes.
Keep a food journal or use a calorie-tracking app to understand your eating habits and identify areas to reduce.
Frequently asked questions
What's the difference between overweight and obese?
Overweight is BMI 25–29.9; obese is BMI 30 or higher. Obesity carries greater health risks, including increased likelihood of heart disease, diabetes, and joint problems. Both categories indicate weight above the healthy range, but obesity is a more severe classification.
Is BMI accurate for everyone?
BMI is a useful screening tool for most people, but it has limitations. Athletes, muscular individuals, and older adults with reduced muscle may have a higher BMI despite low body fat. Conversely, sedentary people with high body fat may have a normal BMI. Always combine BMI with other health markers and consult a doctor.
How much weight should I lose if I'm overweight?
Aim to lose enough weight to bring your BMI below 25 (into the normal range). The calculator shows your target weight. A safe rate is 1–2 pounds per week through a modest calorie deficit and regular activity. Rapid weight loss is often unsustainable and can harm your health.
What if I'm overweight but feel healthy?
Feeling healthy is important, but overweight and obesity increase long-term risk of heart disease, diabetes, and other conditions—even if you feel fine now. Prevention is easier than treating disease later. Consult a healthcare provider to assess your overall health and risk factors.
Can I gain weight and still be healthy?
Yes, if the weight gain is lean muscle (from strength training), not fat. BMI cannot distinguish between muscle and fat. If you're lifting weights and getting stronger, a slight BMI increase may be fine—discuss with a doctor or trainer.
How often should I recalculate my BMI?
Calculate it monthly if you're working on weight loss or gain, or every 3–6 months if maintaining. Don't obsess over daily changes; weight fluctuates naturally with water, food, and hormones. Track trends over weeks and months, not days.