WeightPounds to Kilograms

Pounds to Kilograms

Methodology·How We Verify

Snapshot

1 Pound equals 0.453592 Kilograms.

Reference basis: This conversion uses exact modern mass definitions anchored to the kilogram.
Example: For 0.1 Pounds, the result equals 0.045359 Kilograms.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

0.453592 Kilograms

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API and AI agent access

Pounds to Kilograms.

Machine-readable identifiers

Conversion family: weight
Source unit: pound
Target unit: kilogram

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "weight",
  "value": 1,
  "from": "pound",
  "to": "kilogram"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "weight",
    "value": 1,
    "from": "pound",
    "to": "kilogram",
    "result": {
      "raw": 0.45359237,
      "display": "0.453592"
    },
    "canonicalPath": "/weight/pounds-to-kilograms/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Multiply pounds by 0.45359237 because one international pound equals exactly 0.45359237 kilograms.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Pound = 0.453592 Kilograms (using exact modern mass definitions anchored to the kilogram).
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Pounds	Kilograms
0.1	0.045359
1/4	0.113398
1/2	0.226796
1	0.453592
2	0.907185
5	2.268
10	4.536
25	11.34
50	22.68
100	45.359

Questions & answers

Frequently Asked Questions

What is 1 pound in kilograms?

1 Pound equals 0.453592 Kilograms on this page.

Is there a reverse Kilograms to Pounds page?

Use the mirror Kilograms to Pounds page to switch the direction while keeping the same fixed mass definitions.