Overweight Calculator – Check Your BMI Instantly
This overweight calculator uses the Body Mass Index (BMI) formula to determine whether you fall into the underweight, normal, overweight, or obese category. It supports both metric (kg/cm) and imperial (lb/ft/in) units, making it suitable for users worldwide.
BMI is one of the most widely used screening tools recommended by health organizations to quickly assess weight status relative to height.
What Is BMI?
Body Mass Index (BMI) is a numerical value derived from your height and weight. It provides a simple way to categorize weight ranges that may indicate potential health risks.
BMI Formula (Metric)
BMI = Weight (kg) ÷ [Height (m)]²
Where:
- Weight is measured in kilograms (kg)
- Height is measured in meters (m)
- Height squared means height × height
Example (Metric Calculation)
If your weight is 70 kg and your height is 175 cm:
- Convert height to meters: 175 cm = 1.75 m
- Square height: 1.75 × 1.75 = 3.06
- BMI = 70 ÷ 3.06 = 22.9
This BMI falls within the normal weight category.
BMI Formula (Imperial)
BMI = (Weight (lb) ÷ [Height (in)]²) × 703
Where:
- Weight is measured in pounds (lb)
- Height is measured in inches (in)
- 703 is the conversion factor for imperial units
Example (Imperial Calculation)
If your weight is 180 lb and your height is 5 ft 10 in:
- Convert height to inches: (5 × 12) + 10 = 70 inches
- Square height: 70 × 70 = 4900
- BMI = (180 ÷ 4900) × 703
- BMI = 25.8
This BMI falls into the overweight category.
BMI Categories
- Below 18.5: Underweight
- 18.5 – 24.9: Normal weight
- 25 – 29.9: Overweight
- 30 and above: Obese
Why Knowing If You Are Overweight Matters
Being overweight increases the risk of several health conditions, including:
- Heart disease
- Type 2 diabetes
- High blood pressure
- Sleep apnea
- Joint problems
Identifying weight status early allows for lifestyle adjustments that may prevent long-term complications.
Does Age and Gender Affect BMI?
For adults, BMI categories are generally the same for men and women. However, body fat distribution may differ between genders. For children and teenagers, age- and sex-specific BMI percentiles must be used instead.
Limitations of BMI
Although BMI is useful as a screening tool, it does not:
- Differentiate between muscle and fat
- Measure body fat percentage directly
- Account for bone density or body composition
Athletes or muscular individuals may have a higher BMI without having excess body fat.
Who Should Use This Overweight Calculator?
- Adults monitoring weight status
- Individuals starting a fitness plan
- People tracking weight changes
- Anyone concerned about health risks related to weight
Healthy Weight Management Tips
- Maintain a balanced diet rich in whole foods
- Engage in regular physical activity
- Monitor portion sizes
- Track weight consistently
- Consult healthcare professionals when needed
Medical Disclaimer
This overweight calculator provides general health information only. It is not a diagnostic tool. For personalized medical advice, always consult a qualified healthcare professional.