justyourconvertLBS to KG
Pounds to kilograms, using the exact legal definition.
- 100% Free
- No Sign Up
- Exact NIST Factors
Lbs to kg
Convert pounds to kilograms: multiply by 0.45359237
1 pound = 0.45359237 kilograms
Formula: kg = lb × 0.45359237
Pounds to kilograms table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.45359237 |
| 2 | 0.90718474 |
| 3 | 1.36077711 |
| 4 | 1.81436948 |
| 5 | 2.26796185 |
| 6 | 2.72155422 |
| 7 | 3.17514659 |
| 8 | 3.62873896 |
| 9 | 4.08233133 |
| 10 | 4.5359237 |
| 15 | 6.80388555 |
| 20 | 9.0718474 |
| 25 | 11.33980925 |
| 50 | 22.6796185 |
| 100 | 45.359237 |
Calculated on your device with exact factors from NIST and the SI.
More converters
View all tools- Unit converterConvert length, weight, temperature, volume and six more unit types
- CM to inchesConvert centimeters to inches, with the exact 2.54 factor
- Inches to cmConvert inches to centimeters: multiply by 2.54
- MM to inchesConvert millimeters to inches: divide by 25.4
- Inches to mmConvert inches to millimeters: multiply by 25.4
- Word to HTMLTurn a Word document into clean, semantic HTML
- CSV to JSONTurn CSV rows into a JSON array of objects
- Excel to CSVExport a sheet from an Excel workbook as CSV
- Extract RAROpen RAR archives without WinRAR
- Files uploaded
- 0
- Free tools
- 96
- In your browser
- 100%
How to convert Lbs to kg
Three steps, all in your browser.
- 1
Type a number
Enter a value in either box; the other updates instantly.
- 2
Pick the units
Switch units or swap them around.
- 3
Copy the result
Copy the answer or read it off the conversion table.
LBS to KG: what to know
Pounds (lb, or lbs in plural) measure weight in the United States, and kilograms in nearly everywhere else. To convert pounds to kilograms, multiply by 0.45359237. That number is the legal definition of the international avoirdupois pound, agreed in 1959 and listed in NIST Handbook 44, so the result is exact.
Examples: 180 lb is 81.647 kg; 135 lb is 61.235 kg; a 45 lb barbell is 20.412 kg, which is why it is close to, but not the same as, a 20 kg Olympic bar. A recipe calling for 2 lb of flour needs 907.2 g.
The abbreviation lb comes from the Latin libra. For weights in pounds and ounces, divide the ounces by 16 and add them to the pounds before converting: 7 lb 8 oz = 7.5 lb = 3.402 kg. For stone (used in the UK and Ireland), multiply stones by 14 to get pounds first.
Popular uses
- Converting body weight for metric medical forms
- Translating US recipe and grocery weights
- Comparing barbell and dumbbell weights
- Converting baby and pet weights
Tips for the best result
- Quick estimate: halve the pounds and subtract 10% (200 lb → 90 kg; exact 90.72 kg).
- Keep two decimals for body weight; scales rarely read finer than 0.1 kg.
- Troy pounds for precious metals are a different unit (0.3732417216 kg).
- For luggage, convert the airline's limit into your scale's unit before packing, not after.
Read how JustYourConvert works and our privacy details. Keep your original files and check a converted file before you replace anything.