How Do You Convert Pounds to Kilograms?
Convert pounds to kilograms and other weight units instantly. Free online converter with exact formulas — works in your browser.
Last updated: 30 September 2026
Multiply the weight in pounds by 0.45359237 to get kilograms: kg = lbs × 0.45359237. To reverse it, multiply kilograms by 2.20462262. One pound is exactly 0.45359237 kg by international agreement, so 150 lbs is 68.04 kg and 50 lbs is 22.68 kg — the airline limit for most checked bags. Type a value above to convert instantly.
Pounds to Kilograms Converter
Convert between pounds (lbs) and kilograms (kg). The most common weight conversion for US users.
Common US Weight References
Worked Examples
Pounds to kilograms
- 150 lbs × 0.45359237 = 68.04 kg
- 50 lbs × 0.45359237 = 22.68 kg (the common checked-baggage limit)
- 185 lbs × 0.45359237 = 83.91 kg
Kilograms to pounds
- 68 kg × 2.20462262 = 149.91 lbs
- 70 kg × 2.20462262 = 154.32 lbs
- 23 kg × 2.20462262 = 50.71 lbs (airline cabin-bag limit)
About Pounds to Kilograms Converter
Pounds and kilograms are both units of mass, but the pound belongs to the imperial system and the kilogram to metric. The exact relationship is one pound = 0.45359237 kg. Our converter handles pounds, kilograms, ounces and grams for cooking, fitness, shipping and travel. We tested it at 150 lbs (68.04 kg), 1 kg (2.205 lbs), and 8 oz (226.80 g) — all matched the standard conversion factors.
Limits: Does not support stone (st) as an input unit — common in the UK; Does not convert to metric tons or short tons; Conversion factors are fixed — does not account for weight vs mass distinctions; Does not include body weight category references beyond the raw conversion
Who Uses This Tool
- A chef converting a 2.5 lb chicken weight to 1.13 kg for a metric-version recipe
- A gym-goer converting their 185 lb bench press to 83.9 kg for an international competition
- A traveler checking that their 50 lb suitcase is under the 23 kg airline limit
Key Features
- Pounds, kilograms, ounces, grams
- Instant conversion
- Common US weight references
- Decimal support
- Browser-only calculation
How to use Pounds to Kilograms Converter
- Select the conversion type (e.g., Pounds to Kilograms).
- Enter the weight value.
- See the converted result instantly.
How It Compares
Unlike Google's unit converter which requires a search query each time, this tool stays open for repeated conversions with dedicated weight-unit focus. It also shows ounces and grams alongside pounds and kilograms — most weight converters only show two units.
Privacy & Security
Because processing happens directly in your browser, your files and input are not uploaded to our servers.
Sources
Written and checked by Mohammad Sohail
I checked every factor on this page against the NIST and BIPM references above on 30 September 2026, and ran all six worked examples through the converter — each returned the number shown.
About FreeDigitalToolkit →Frequently Asked Questions
What is the pounds to kilograms formula?
kg = lbs × 0.45359237. For the reverse, lbs = kg × 2.20462262. So 150 lbs × 0.45359237 = 68.04 kg, and 68 kg × 2.20462262 = 149.91 lbs.
How many pounds are in a kilogram?
About 2.20462 pounds. For quick mental maths, 1 kg ≈ 2.2 lbs and 1 lb ≈ 0.45 kg.
What does 150 pounds mean in kilograms?
150 pounds is 68.04 kilograms. It is a common reference point because 150 lbs sits near the middle of the healthy range for a 5 ft 9 in adult.
How do I convert ounces to grams?
Multiply ounces by 28.3495. So 8 oz × 28.3495 = 226.8 g, and 16 oz (one pound) = 453.6 g.
Which unit do weight scales use?
Most digital scales switch between lbs and kg at the press of a button. In the US bathroom scales show pounds; kitchen scales usually show grams or ounces.
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