At One Place

21 kn to mph

21 knots in miles per hour
21 kn = 24.16637 mph
mph = kn × 1.150779448

21 knots is 24.16637 miles per hour. To get there, multiply by 1.150779448.

Values either side

Knots near 21, converted to miles per hour.
Knots Miles per hour
17 kn 19.56325
18 kn 20.71403
19 kn 21.86481
20 kn 23.01559
21 kn ← 24.16637
22 kn 25.31715
23 kn 26.46793
24 kn 27.61871
25 kn 28.76949

How the conversion works

The relationship is mph = kn × 1.150779448. Both units measure speed, so the conversion is a fixed factor that never changes.

Common questions

What is 21 kn in miles per hour?
21 kn is 24.16637 mph.
How do you convert knots to miles per hour?
Multiply by 1.150779448.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked