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Weight

Lbs to Kg Converter

US scale readings and gym plates in pounds need conversion to kilograms for metric health records, research forms, and international shipping docs.

Inputs

Enter your values below. Results update when you calculate.

About Lbs → Kg

US scale readings and gym plates in pounds need conversion to kilograms for metric health records, research forms, and international shipping docs.

Divide pounds by 2.20462 or multiply by 0.453592 to get kilograms.

Input is pounds; this is not kg-to-lbs.

How to use this tool

Type weight in pounds. Calculate for kilograms.

Formula & methodology

This lbs to kg converter applies the standard relationship below. Intermediate values are kept at full precision; only the displayed result is rounded.

kg = lbs x 0.45359237

Tips for accurate results

  • 150 lb is about 68.04 kg.
  • Baby weights in US hospitals may be lb/oz—convert lb portion here.
  • Reverse: kg-to-lbs.
  • Use consistent units before computing BMI.

Frequently asked questions

1 lb in kg?

About 0.4536 kg.

Troy pounds?

This uses avoirdupois pounds for everyday weight.

Free?

Yes.

Precision?

Medical dosing uses specialized units—ask a pharmacist.

Further reading

Guides that explain the ideas behind this calculator.

All guides →
Weight 3 min read Kg to lbs chart for body weight and gym plates (with stone) A body-weight chart from 40 to 150 kg in pounds and stone, a plate-by-plate gym table, and the mental shortcut that gets you within 1%.

Related tools

More calculators in Weight.

Weight Kg → Lbs Convert kilograms to pounds. Weight Grams → Ounces Convert grams to ounces. Weight Ounces → Grams Convert ounces to grams. Weight Kg → Stone Convert kilograms to stone and pounds. Weight Stone → Kg Convert stone (and lbs) to kilograms.