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lbs to kg
Convert pounds to kilograms for travel, fitness, and metric forms.
1 pound equals 0.4536 kilograms when using 1 kg = 2.20462262 lb. This free lbs to kg converter divides pounds by 2.20462262 to return kilograms. Use it when a US weight must be written for a metric form, airline policy, or international chart. The result is ready for passports, gym plans, and shipping notes.
How to convert lbs to kg
Divide pounds by 2.20462262. In short: kilograms = lb ÷ 2.20462262.
Example: 150 lb ÷ 2.20462262 = 68.04 kg. So 150 pounds is 68.04 kilograms.
Travel forms often want kilograms with one decimal place. Round only at the end of the conversion.
lbs to kg conversion chart
Common pound values converted to kilograms, rounded to two decimal places.
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.45 kg |
| 5 lb | 2.27 kg |
| 10 lb | 4.54 kg |
| 20 lb | 9.07 kg |
| 30 lb | 13.61 kg |
| 40 lb | 18.14 kg |
| 50 lb | 22.68 kg |
| 60 lb | 27.22 kg |
| 70 lb | 31.75 kg |
| 80 lb | 36.29 kg |
| 90 lb | 40.82 kg |
| 100 lb | 45.36 kg |
If you only need a common value, scan the chart first. It covers 1 through 100 pounds in practical steps.
Common lbs to kg conversions
100 lb is 45.36 kg. 120 lb is 54.43 kg. 150 lb is 68.04 kg.
180 lb is 81.65 kg. 200 lb is 90.72 kg.
These body-weight points are among the most searched US-to-metric weight checks.
A 10 lb change is about 4.54 kg. That helps when you track weekly progress across unit systems.
Why US pounds still need a metric twin
Pounds remain the default for many US health and household conversations. Metric forms, travel rules, and global apps expect kilograms.
Converting lbs to kg keeps your original US number while matching the unit another system requires. That avoids manual mistakes on forms and plans.
If two scales disagree, convert both readings to one unit before you compare them. That removes unit error from the check.
Airline cabin limits are often kilograms even when your home scale shows pounds.
Convert before you reach the counter so the bag weight is not a surprise.
Fitness apps may store kilograms by default. Convert weekly weigh-ins so trends stay consistent.
If two scales disagree, convert both readings to one unit before you compare them.
Frequently asked questions
How much is 150 lbs in kg?
150 pounds equals 68.04 kilograms.
How much is 200 lbs in kg?
200 pounds equals 90.72 kilograms.
How many kg is 100 pounds?
100 pounds equals 45.36 kilograms.
How many kilograms is 1 pound?
1 pound equals about 0.45 kilograms (0.4536 with the factor used here).
How much is 180 lbs in kg?
180 pounds equals 81.65 kilograms.
More free converters
Need kilograms to pounds instead? Use kg to lbs. More mass units are on the weight converter page.
For SI mass unit background, see NIST - SI units for mass.