What is lbs?
Pounds are widely used in body weight, fitness, and product labeling in imperial markets.
pounds to kilograms converter
Convert pounds to kilograms instantly using the exact 1 lb = 0.45359237 kg factor. Essential for health platform sign-ups, European medical forms, international shipping labels, and any US-to-metric weight translation.
This page is most needed when a US health app gives a weight goal in pounds that needs to go into a European fitness tracker in kilograms, or when an international parcel service shows a weight limit in kg and the package weight was measured in lbs.
Also useful: convert kilograms to pounds, Kilograms To Pounds, Pounds To Ounces.
Calculation: kg = lb x 0.45359237
Take the value in pounds, multiply it by 0.453592, and the result is the same amount in kilograms.
This works because each lbs equals 0.453592 kg. Keep extra decimals if you need higher precision.
Reverse
To go the other way, use the reverse formula so the unit relationship stays exact.
Common reference values
| pounds | kilograms |
|---|---|
pounds1 | kilograms0.453592 kilograms |
pounds5 | kilograms2.267962 kilograms |
pounds10 | kilograms4.535924 kilograms |
pounds20 | kilograms9.071847 kilograms |
pounds25 | kilograms11.339809 kilograms |
pounds50 | kilograms22.679619 kilograms |
pounds75 | kilograms34.019428 kilograms |
pounds100 | kilograms45.359237 kilograms |
pounds120 | kilograms54.431084 kilograms |
pounds150 | kilograms68.038855 kilograms |
pounds160 | kilograms72.574779 kilograms |
pounds180 | kilograms81.646627 kilograms |
pounds200 | kilograms90.718474 kilograms |
pounds220 | kilograms99.790321 kilograms |
pounds250 | kilograms113.398093 kilograms |
Open exact-value pages for common lookups on this converter.
150 pounds equals 68.04 kg. Multiply 150 × 0.45359 = 68.04 kg. This is a very common reference for body weight and is often rounded to 68 kg on medical forms.
200 pounds equals approximately 90.72 kg. Multiply 200 × 0.45359 = 90.72 kg. This is a common weight class boundary in combat sports.
Divide pounds by 2.2 for a quick estimate. Example: 180 lbs ÷ 2.2 = 81.8 kg (exact is 81.65 kg). Accurate enough for most practical uses.
Yes. The avoirdupois pound (used for everyday weights in both countries) is defined as exactly 0.45359237 kg. There is a different 'troy pound' used for precious metals, but it is rarely encountered in everyday use.
Weigh the package in pounds, multiply by 0.45359 to get kilograms, then round to one decimal place as most carriers require. For example, a 22 lb package is 9.98 kg — typically shown as 10.0 kg on the label.
For the reverse direction, use the Kilograms To Pounds Converter page.
Pounds are widely used in body weight, fitness, and product labeling in imperial markets.
Kilograms are the SI base unit for mass and are standard for shipping, health, and science.
Pounds To Kilograms Converter often comes up in body weight tracking and health forms, shipping and parcel weight labels, and recipe and nutritional ingredient measurements. It is most useful when the source value is published in one unit but the person reading it expects another.
If you are comparing nearby units, browse the full weight converters collection for the closest match instead of doing extra manual steps.
A common next step is to compare this result with Kilograms To Pounds or switch direction with Kilograms To Pounds.
Body weight and fitness goals
1 lbs -> 0.45359237 kg
Common when a gym tracker, health app, or doctor's scale shows weight in a different unit than your usual reference.
Shipping, luggage, and parcels
5 lbs -> 2.2679618500000003 kg
Helpful for airline baggage limits, international shipping labels, and postal service weight requirements.
Cooking, recipes, and nutrition
10 lbs -> 4.535923700000001 kg
Useful when ingredient amounts, supplement serving sizes, or food packaging show grams, ounces, and pounds in the same document.
Use the quick table for fast lookups and the formula when accuracy matters. Keep more decimals during intermediate steps, then round only for the final number you plan to show or report.
Converting pounds to kilograms accurately prevents communication errors between teams, tools, and regions that use different standards. If you need the opposite direction, use the Kilograms To Pounds Converter.
If you are staying in the same workflow, continue with Kilograms To Pounds, Pounds To Ounces, Ounces To Grams.
Written by
Convertaro Editorial Team
Reviewed by
Convertaro Review Process
Last updated
April 7, 2026
Pounds To Kilograms Converter is based on standard weight definitions and the formula shown on the page.
We review the displayed formula, example values, and reverse conversion logic for consistency before publishing updates.
These suggestions stay close to this conversion so you can compare nearby units without jumping to unrelated tools.
Reverse direction for kg back to lbs.
Uses the same lbs starting unit for a nearby comparison.
Closely related weight conversion often used in the same workflow.
Uses the same lbs starting unit for a nearby comparison.
Uses the same lbs starting unit for a nearby comparison.
Uses the same lbs starting unit for a nearby comparison.
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