Weight Formula:
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This calculation determines a person's weight based on their Body Mass Index (BMI) and height. It's useful when you know someone's BMI and height but need to determine their actual weight.
The calculator uses the formula:
Where:
Explanation: The formula rearranges the standard BMI calculation to solve for weight instead of BMI.
Details: Knowing weight from BMI and height can be useful for medical assessments, fitness tracking, and nutritional planning when direct weight measurement isn't available.
Tips: Enter BMI in kg/m² and height in meters. All values must be valid (BMI > 0, height > 0).
Q1: Why calculate weight from BMI instead of measuring directly?
A: This is useful when you have BMI data (e.g., from studies or surveys) but don't have direct weight measurements.
Q2: How accurate is this calculation?
A: It's mathematically precise, but remember BMI itself is an estimate that doesn't account for muscle mass vs. fat.
Q3: Can I use height in centimeters?
A: No, height must be in meters (e.g., 1.75m not 175cm). You can convert cm to m by dividing by 100.
Q4: What's a healthy weight range?
A: For adults, a BMI of 18.5-24.9 is generally considered healthy, but consult a healthcare professional.
Q5: Does this work for children?
A: The calculation works mathematically, but BMI interpretation for children uses percentiles rather than fixed values.