Convert Beaufort to miles per hour

1 Bft=2.23694mph

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

You have

Equals

1.870079

Conversion formula

Forward

m/s = 0.836 × Bft^1.5

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

About both units

From

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 →

Mile per Hour

mph

Miles per hour (mph) is the standard road-speed unit in the US, UK and a few other countries. US highways typically 65–75 mph; UK motorways 70 mph. US weather reports wind speed in mph, while meteorologists also use knots.

Real-world: US interstate: 70 mph typical. UK motorway: 70 mph limit. Cycling pro speed: 25 mph. Tornado winds: 110+ mph.

Read full mile per hour reference →

Beaufort Scale to Mile per Hour conversion table

Common Beaufort to miles per hour values for quick reference.

Beaufort Scale (Bft)	Mile per Hour (mph)
1 Bft	2.23694 mph
5 Bft	11.1847 mph
10 Bft	22.3694 mph
25 Bft	55.9234 mph
50 Bft	111.847 mph
100 Bft	223.694 mph
150 Bft	335.54 mph
200 Bft	447.387 mph
300 Bft	671.081 mph
500 Bft	1,118.47 mph

Tips & common mistakes

Quick tips

Beaufort is empirical — conversion to m/s uses v = 0.836 × B^1.5.
Force 4 (moderate breeze) = 5.5–7.9 m/s.
Marine forecasts still use Beaufort alongside knots.

Avoid these

Treating Beaufort as a linear scale — it is a power relationship.
Converting Beaufort to km/h by multiplying — always use the empirical formula.
Using Beaufort for land winds — it was designed for sea conditions.

Frequently asked questions

How many miles per hour in a beaufort scale?

One beaufort scale equals 2.23694 miles per hour.

How do I convert Beaufort to miles per hour?

Multiply the beaufort scale value by 2.23694 to get the equivalent in miles per hour.

What is 100 Beaufort in miles per hour?

100 Beaufort equals 223.694 miles per hour.

Is a beaufort scale bigger than a mile per hour?

Yes. 1 beaufort scale equals 2.23694 miles per hour, so one beaufort scale is larger.

How to convert Beaufort to miles per hour without a calculator?

Multiply by 2.24 for a quick estimate; use a calculator for precise results.

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