Convert Mach to Beaufort

1 Ma=340.29Bft

Use the converter below to change any Mach value into Beaufort instantly — with formula, conversion table, and real-world examples.

You have

Equals

54.92397

Conversion formula

Forward

Bft = (m/s ÷ 0.836)^(1/1.5)

The Beaufort scale uses a non-linear power relationship with wind speed.

About both units

From

Mach

Mach is the ratio of an object's speed to the local speed of sound. Mach 1 at sea level in standard conditions = 1225 km/h (340.29 m/s). Supersonic starts at Mach 1; hypersonic at Mach 5. The Concorde cruised at Mach 2.04; the X-15 reached Mach 6.7.

Real-world: Concorde: Mach 2.04. F-16 fighter: Mach 2. SR-71 Blackbird: Mach 3.3. Space re-entry: Mach 25+.

Read full mach reference →

Beaufort Scale

Bft

The Beaufort scale is an empirical wind-force scale from 0 (calm) to 12 (hurricane). Created by Francis Beaufort in 1805, it correlates wind force with observed effects on sea or land. Force 8 (34–40 knots) is a gale; force 12 is above 64 knots.

Real-world: Force 5 (fresh breeze): 17–21 knots, white-caps form. Force 8 (gale): 34–40 knots. Force 12: 64+ knots.

Read full beaufort scale reference →

Mach to Beaufort Scale conversion table

Common Mach to Beaufort values for quick reference.

Mach (Ma)	Beaufort Scale (Bft)
1 Ma	340.29 Bft
5 Ma	1,701.45 Bft
10 Ma	3,402.9 Bft
25 Ma	8,507.25 Bft
50 Ma	17,014.5 Bft
100 Ma	34,029 Bft
150 Ma	51,043.5 Bft
200 Ma	68,058 Bft
300 Ma	102,087 Bft
500 Ma	170,145 Bft

Tips & common mistakes

Quick tips

Mach 1 = ~1225 km/h at sea level, standard conditions.
Local speed of sound decreases with altitude (colder air) — true Mach value varies.
Mach 0.8+ is "transonic"; Mach 1+ supersonic; Mach 5+ hypersonic.

Avoid these

Assuming Mach 1 is a fixed speed — depends on altitude and temperature.
Multiplying Mach values as simple ratios across altitudes.
Using Mach for subsonic everyday speeds — not practical.

Frequently asked questions

How many Beaufort in a mach?

One mach equals 340.29 Beaufort.

How do I convert Mach to Beaufort?

Multiply the mach value by 340.29 to get the equivalent in Beaufort.

What is 100 Mach in Beaufort?

100 Mach equals 34,029 Beaufort.

Is a mach bigger than a beaufort scale?

Yes. 1 mach equals 340.29 Beaufort, so one mach is larger.

How to convert Mach to Beaufort without a calculator?

Multiply by 340.29 for a quick estimate; use a calculator for precise results.

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