Pounds to Kilograms
Convert pounds to kilograms instantly. Free lbs to kg calculator with exact formula and common weight reference table.
Converting pounds to kilograms is one of the most common unit conversions globally, especially for travelers, athletes, and anyone following international nutritional or medical guidelines. The formula is straightforward: divide the pound value by 2.20462 (or multiply by 0.453592). A 150 lb person weighs approximately 68 kg; 200 lbs is about 90.7 kg. Medical dosing, clinical trials, and body mass index (BMI) calculations universally use kilograms — a critical reason why Americans traveling abroad or consulting international health guidelines need this conversion regularly. In weightlifting, competition categories are defined in kilograms: the 93 kg and 105 kg weight classes correspond to approximately 205 lbs and 231 lbs. Pharmaceutical labels, IV drip rates, and pediatric medicine doses are all calculated per kilogram of body weight, making this conversion medically significant as well.
Free Online Unit Converter
Zolkit's unit converter supports 7 categories covering dozens of the most common conversions — length, weight, temperature, volume, area, speed, and torque. Pick a category, select your units from the dropdowns, type a value, and see the result instantly. A swap button reverses the conversion direction with one click. Your last-used category and units are remembered locally so the converter is ready when you return.
7 Unit Categories
Convert length, weight, temperature, volume, area, speed, and torque — all the unit conversions you need in one tool.
Instant Conversion
Results update as you type. Switch between units with dropdowns and see the converted value immediately.
Swap Units
Hit the swap button to instantly reverse the conversion direction. Saves time when you need both directions.
Offline-Ready
All conversions are calculated locally in your browser. No internet required after the page loads.
Works on Any Device
Clean, responsive layout that works on phones, tablets, and desktops alike.
Always Free
No account required, no ads, no limits. Convert as many units as you need, whenever you need.
How to Use the Unit Converter
- 1
Choose a unit category from the tab bar at the top: Length, Weight, Temperature, Volume, Area, Speed, or Other.
- 2
Select the unit you're converting from and the unit you're converting to using the dropdowns. Type your value and the result appears instantly.
- 3
Click the swap button (↔) to reverse the conversion direction, or click Copy to save the result to your clipboard.