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Pounds to Kilograms
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// about this tool

Pounds to Kilograms Online

Updated 2026-07-09

Convert pounds to kilograms online for free. Enter a weight in pounds and SnapTools shows the exact value in kilograms instantly, in your browser — nothing is uploaded.

One pound is exactly 0.45359237 kilograms, so you multiply pounds by 0.453592. For quick reference: 1 lb ≈ 0.45 kg, 5 lb ≈ 2.27 kg, 10 lb ≈ 4.54 kg, 100 lb ≈ 45.36 kg, and 150 lb ≈ 68.04 kg. Enter any value above for the precise figure, or use the full Weight Converter for ounces and stones.

// how to use

  1. 1 Type a weight in pounds into the input.
  2. 2 SnapTools shows the value in kilograms instantly as you type.
  3. 3 Copy the result, or open the Weight Converter for ounces, stones, and more.

// examples

Body weight
Input
150
Output
68.0388555
Round number
Input
10
Output
4.5359237

// common uses

Converting body weight from pounds to kg Reading US product weights in metric Shipping and parcel weights across systems Bringing imperial weights into a metric record

// faq

No. The conversion runs entirely in your browser, so nothing you enter leaves your machine.
One pound is exactly 0.45359237 kilograms, by the international definition. So you multiply pounds by 0.453592 to get kilograms.
Divide by 2.2 for a close estimate — 150 pounds is about 68 kg. This tool applies the exact factor for a precise result.
In everyday use they are interchangeable, and that is how this tool treats them — it converts between pounds and kilograms, the units a scale reports.
Multiply the stones by 14 and add the pounds to get total pounds, then convert — or use the full Weight Converter, which includes stones directly.

// related

Kilograms to Pounds Weight Converter Miles to Kilometers Fahrenheit to Celsius Number Base Converter

Use this via API

Get a free API key → 
curl -X POST https://snaptools.dev/api/v1/tools/pounds-to-kg \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"value":"150"}'
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