LBS → KG
1 lb = 0.45359237 kg
kg = lbs × 0.45359237
Example: 150 lbs × 0.45359237 = 68.04 kg
LBS to KG
100% Free, Instant & Accurate Pounds to Kilograms Weight Converter.
- Instant two-way LBS ↔ KG
- Exact 0.45359237 kg standard
- 0–5 decimal precision
- 100% client-side & private
Two-way pounds and kilograms converter
lbs
kg
Decimal places
Result
1 lb = 0.45 kg
Grams
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Ounces
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Pounds + ounces
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Stones + pounds
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Pounds to Kilograms Conversion Formula
LBS to KG uses the exact international avoirdupois pound, defined in 1959 as precisely 0.45359237 kilograms.
KG → LBS
1 kg = 2.20462262 lbs
lbs = kg × 2.20462262
Example: 70 kg × 2.20462262 = 154.32 lbs
Mental-math shortcut: halve the pounds, then subtract 10% of that. 200 lbs → 100 → 100 − 10 = 90 kg (exact: 90.72 kg).
Quick Conversion Lookup Table
Common pounds to kilograms and kilograms to pounds values. Click a row to load it into the converter.
Rounded to 2 decimal places
| Pounds (lbs) | Kilograms (kg) |
|---|
| Kilograms (kg) | Pounds (lbs) |
|---|
How to Convert LBS to KG
Enter a weight
Type a value in either the pounds or the kilograms field. Commas work as decimal separators too.
See it instantly
The other field updates on every keystroke. Choose 0–5 decimal places to round the result.
Copy or swap
Copy the result in one click, or press “Swap LBS ↔ KG” to convert kilograms to pounds.
What is a pound (lb)?
The pound is a unit of mass in the imperial and US customary systems. Its abbreviation “lb” comes from the Latin libra. One pound equals 16 ounces and is defined as exactly 0.45359237 kg.
What is a kilogram (kg)?
The kilogram is the SI base unit of mass, used by almost every country worldwide. Since 2019 it is defined through the Planck constant. One kilogram equals 1,000 grams, or about 2.20462262 pounds.
Where lbs to kg conversion is used
Body weight and fitness tracking, gym plates and dumbbells, luggage allowances, shipping and postage, cooking, and medical dosing all regularly need pounds converted to kilograms.
Why precision matters
Rounding 1 lb to 0.45 kg introduces almost a 1% error — about 1.8 kg on 400 lbs. LBS to KG always calculates with the full exact factor and only rounds the final number you see.
Frequently Asked Questions
How do I convert pounds to kilograms?
Multiply the number of pounds by 0.45359237. For example, 150 lbs × 0.45359237 = 68.04 kg. You can also divide pounds by 2.20462262 for the same result.
What is the exact conversion rate between lbs and kg?
Since the International Yard and Pound Agreement of 1959, one international avoirdupois pound is defined as exactly 0.45359237 kilograms. The inverse, 1 kg, equals approximately 2.20462262 lbs.
How many kilograms are in a pound?
There are exactly 0.45359237 kilograms in one pound — roughly 0.454 kg, or a little under half a kilogram.
How do I convert kilograms to pounds?
Multiply the number of kilograms by 2.20462262 (or divide by 0.45359237). For example, 70 kg × 2.20462262 = 154.32 lbs.
Is there a quick way to estimate lbs to kg in my head?
Halve the number of pounds, then subtract 10% of that result. For 200 lbs: half is 100, minus 10 gives 90 kg — very close to the exact 90.72 kg.
Is LBS to KG free and private?
Yes. LBS to KG is 100% free, requires no sign-up, and every calculation runs locally in your browser. No numbers you enter are sent to any server.
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