UnitConvConvert
Speed

Convert Beaufort to knots

1 Bft=1.94384kn

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

1.625054

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 →
To

Knot

kn

The knot equals one nautical mile per hour — 1.852 km/h. It is the international standard in marine navigation and aviation. Commercial airliners cruise at 450–500 knots. Sailboats in light breeze: 2–6 knots.

Real-world: Airbus A380 cruise: ~490 knots. Cruise ship: 20 knots. Sailing yacht: 6 knots typical.
Read full knot reference →

Beaufort Scale to Knot conversion table

Common Beaufort to knots values for quick reference.

Beaufort Scale (Bft)Knot (kn)
1 Bft1.94384 kn
5 Bft9.71922 kn
10 Bft19.4384 kn
25 Bft48.5961 kn
50 Bft97.1922 kn
100 Bft194.384 kn
150 Bft291.577 kn
200 Bft388.769 kn
300 Bft583.153 kn
500 Bft971.922 kn

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 knots in a beaufort scale?
One beaufort scale equals 1.94384 knots.
How do I convert Beaufort to knots?
Multiply the beaufort scale value by 1.94384 to get the equivalent in knots.
What is 100 Beaufort in knots?
100 Beaufort equals 194.384 knots.
Is a beaufort scale bigger than a knot?
Yes. 1 beaufort scale equals 1.94384 knots, so one beaufort scale is larger.
How to convert Beaufort to knots without a calculator?
Multiply by 1.94 for a quick estimate; use a calculator for precise results.

Related speed conversions

📊 See full comparison matrix →

More from Beaufort Scale

Bft → km/h
1 = 3.6 km/h
Bft → m/s
1 = 1 m/s
Bft → mph
1 = 2.23694 mph
Bft → Ma
1 = 0.002939 Ma
Bft → ft/s
1 = 3.28084 ft/s
Bft → cm/s
1 = 100 cm/s
Bft → yd/min
1 = 65.6168 yd/min
Bft → in/min
1 = 2,364.07 in/min

More to Knot

km/h → kn
1 = 0.54 kn
m/s → kn
1 = 1.94384 kn
mph → kn
1 = 0.869 kn
Ma → kn
1 = 661.471 kn
ft/s → kn
1 = 0.5925 kn
cm/s → kn
1 = 0.01944 kn
yd/min → kn
1 = 0.02962 kn
in/min → kn
1 = 0.0008222 kn

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