Weight Formula:
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This calculation determines a person's weight based on their Body Mass Index (BMI) and height. It's the reverse of the standard BMI calculation and can be useful for setting weight targets based on desired BMI.
The calculator uses the formula:
Where:
Explanation: The formula squares the height (to account for body surface area) and multiplies by the BMI value to determine weight.
Details: Knowing your target weight for a specific BMI can help with weight management goals, fitness planning, and health assessments.
Tips: Enter BMI in kg/m² (typically between 18.5-40 for most adults) and height in meters. All values must be valid (BMI > 0, height > 0).
Q1: What is a healthy BMI range?
A: Generally, 18.5-24.9 is considered normal weight, 25-29.9 overweight, and 30+ obese, though this may vary by population.
Q2: How accurate is this calculation?
A: It's mathematically precise, but actual healthy weight may vary based on muscle mass, body composition, and other factors.
Q3: Can I use feet and pounds instead?
A: This calculator uses metric units. For imperial, first convert height to meters (1 foot = 0.3048m) and pounds to kg (1lb = 0.4536kg).
Q4: Does this account for body composition?
A: No, BMI doesn't distinguish between muscle and fat. Athletes with high muscle mass may have higher BMI without excess fat.
Q5: Should children use this calculator?
A: BMI interpretation differs for children. Pediatric growth charts should be used instead of adult BMI categories.