Beaufort ScaleBeaufort to Miles per Hour

B to mph

Methodology·How We Verify

Snapshot

1 Beaufort equals 1.870079 Miles per hour.

Reference basis: This conversion is threshold-based and maps values to the nearest valid Beaufort level.
Example: For 2 Beaufort, the mapped result equals 5.289381 Miles per hour.

Interactive conversion

Converter Calculator

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

1.870079 Miles per hour (mph)

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API and AI agent access

B to mph.

Machine-readable identifiers

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

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": "beaufort",
  "to": "mile_per_hour"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "beaufort-scale",
    "value": 1,
    "from": "beaufort",
    "to": "mile_per_hour",
    "result": {
      "raw": 1.870078740157478,
      "display": "1.870079"
    },
    "canonicalPath": "/beaufort-scale/beaufort-to-miles-per-hour/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Beaufort force converts to wind speed through the standard relation v = 0.836 * B^(3/2). Output is then mapped from m/s to the selected unit using exact constants.

Method & Reference

Method basis: deterministic threshold mapping shown in Snapshot.
Equation reference: v (m/s) = 0.836 * B^(3/2)
Consistency rule: threshold, rounding, and clamping rules stay fixed so outputs remain reproducible.

Common Conversion Values

Beaufort (B)	Miles per hour (mph)
0	0
1	1.870079
2	5.289381
3	9.717214
4	14.96063
5	20.908116
6	27.484432
7	34.634343
8	42.315051
9	50.492126
10	59.137082
11	68.225845
12	77.737713

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.