Conversion Formula:
From: | To: |
The pound (lb) to kilogram (kg) conversion is a standard weight conversion between imperial and metric systems. 1 pound is equal to approximately 0.453592 kilograms.
The calculator uses the conversion formula:
Where:
Explanation: The formula divides the pound value by 2.20462 to get the equivalent weight in kilograms.
Details: Accurate weight conversion is essential for international trade, scientific research, medical dosing, and fitness tracking where different measurement systems are used.
Tips: Enter weight in pounds (lb) to get the equivalent weight in kilograms (kg). The value must be positive.
Q1: Why is 2.20462 used for conversion?
A: This is the exact conversion factor between pounds and kilograms (1 kg = 2.20462 lb) as defined by international agreement.
Q2: How accurate is this conversion?
A: The conversion is mathematically exact. The calculator provides results to 4 decimal places for precision.
Q3: What's the difference between avoirdupois pound and metric pound?
A: This calculator uses the international avoirdupois pound (the most common pound measure), not the metric pound (500g).
Q4: Can I convert kg to lb with this formula?
A: No, this is specifically for lb to kg. For kg to lb, you would multiply by 2.20462 instead of dividing.
Q5: Why is weight conversion important in medicine?
A: Many medications are dosed by weight (mg/kg), and accurate conversion between measurement systems is critical for patient safety.