Mach to Beaufort Converter
Speed · unit-converter
Convert Mach to Beaufort with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through meters per second with fixed definitions (knot, international mile, Mach 1 = ISA sea level, Beaufort WMO bands at 10 m, vacuum c, plus linear SI and imperial rate units like km/s, fpm, ips, cm/s, and mm/s).
About Mach
Mach number is the ratio of speed to the local speed of sound. Here Mach 1 is fixed at 340.29 m/s (ISA sea level, ~15 °C) for consistent numeric conversion.
About Beaufort
The Beaufort wind force scale (0–12) describes mean wind at 10 m height. This tool maps forces to midpoint m/s (WMO-style bands) and maps m/s back to a force index.
How to convert mach (isa sea level) to beaufort wind force
The Beaufort scale is a discrete wind force (0–12) based on mean wind at 10 m. This tool converts by passing through an equivalent value in meters per second (WMO-style m/s bands; midpoints when starting from a force).
From Beaufort: your input is rounded to the nearest whole force 0–12, then the midpoint m/s for that force is used before converting to beaufort.
To Beaufort: your speed is converted to m/s, then classified into the matching force 0–12.
Examples
Example #1: Convert 3 mach to beaufort
3 mach → 1,020.870000 m/s (equiv.) → 12.000000 beaufort. Beaufort: WMO mean wind at 10 m. From Beaufort rounds to force 0–12 then uses midpoint m/s; to Beaufort returns force index.
Result: 12 beaufort
Example #2: Convert 7 mach to beaufort
7 mach → 2,382.030000 m/s (equiv.) → 12.000000 beaufort. Beaufort: WMO mean wind at 10 m. From Beaufort rounds to force 0–12 then uses midpoint m/s; to Beaufort returns force index.
Result: 12 beaufort
Summary
Beaufort conversions use the WMO-style mean wind m/s ranges at 10 m. From Beaufort: your value is rounded to force 0–12, then the midpoint m/s for that force is used. To Beaufort: the m/s equivalent of your input is classified into a force 0–12. Other pairs with Mach and Beaufort still pass through that m/s bridge.
Relationship context
You are converting between Mach and Beaufort. Beaufort is a discrete wind scale; conversions use WMO mean-wind m/s bands at 10 m. Linear units (m/s, km/h, mph, knots, etc.) bridge through an equivalent m/s value. Mach and c use fixed m/s definitions for Mach 1 and vacuum c.
Conversion tables
| Mach (mach) | Beaufort (beaufort) |
|---|---|
| 0.1 | 12 |
| 1 | 12 |
| 2 | 12 |
| 3 | 12 |
| 4 | 12 |
| 5 | 12 |
| 6 | 12 |
| 7 | 12 |
| 8 | 12 |
| 9 | 12 |
| Mach (mach) | Beaufort (beaufort) |
|---|---|
| 10 | 12 |
| 20 | 12 |
| 30 | 12 |
| 40 | 12 |
| 50 | 12 |
| 60 | 12 |
| 70 | 12 |
| 80 | 12 |
| 90 | 12 |
| 100 | 12 |