Beaufort ScaleKilometers per Hour to Beaufort

km/h to B

Methodology·How We Verify

Snapshot

1 Kilometers per hour equals 0 Beaufort.

Reference basis: This conversion is threshold-based and maps values to the nearest valid Beaufort level.
Example: For 3.0096 Kilometers per hour, the mapped result equals 1 Beaufort.

Interactive conversion

Converter Calculator

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

0 Beaufort (B)

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API and AI agent access

km/h to B.

Machine-readable identifiers

Conversion family: beaufort-scale
Source unit: kilometer_per_hour
Target unit: beaufort

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": "beaufort-scale",
  "value": 1,
  "from": "kilometer_per_hour",
  "to": "beaufort"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "beaufort-scale",
    "value": 1,
    "from": "kilometer_per_hour",
    "to": "beaufort",
    "result": {
      "raw": 0.47972698425060173,
      "normalized": 0,
      "display": "0"
    },
    "canonicalPath": "/beaufort-scale/kilometers-per-hour-to-beaufort/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Input speed is first converted to m/s, then B = (v / 0.836)^(2/3) is applied, rounded to the nearest integer, and clamped to the standard Beaufort range 0-12.

Method & Reference

Method basis: deterministic threshold mapping shown in Snapshot.
Equation reference: B = round((v / 0.836)^(2/3)), clamped to 0-12
Consistency rule: threshold, rounding, and clamping rules stay fixed so outputs remain reproducible.

Common Conversion Values

Kilometers per hour (km/h)	Beaufort (B)
0	0
3.0096	1
8.512434274636131	2
15.638340331377877	3
24.0768	4
33.648350925416835	5
44.231905979281514	6
55.738572020459934	7
68.09947419708905	8
81.25919999999999	9
95.17190846042753	10
109.79885365958972	11
125.10672265102302	12

Questions & answers

Frequently Asked Questions

What standard is used for Beaufort conversion?

This page uses v = 0.836 * B^(3/2) at 10 m over open water, with exact unit factors for m/s, km/h, mph, and knots.

How is speed to Beaufort handled?

Reverse pages compute B = (v / 0.836)^(2/3), then round to the nearest integer and clamp the result to 0 through 12.