Knots to km/h: Convert knots to kilometers per hour

Answer
1.852 km/h = 1 kn

1 kn = 1.852 km/h. To convert knots to kilometers per hour, multiply by 1.852. To go back, multiply by 0.5399568035 (or divide by 1.852). Knots are used in aviation, boating and wind reports; 1 kn = 1 nautical mile per hour.

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Mach assumes the speed of sound at sea level, 15 °C (340.29 m/s).
Converted speed
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How we calculated this

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    Formula

    km/h = kn × 1.852 kn = km/h × 0.5399568035 20 kn × 1.852 = 37.04 km/h

    Knots to km/h table

    knkm/h
    1 kn1.852 km/h
    2 kn3.704 km/h
    5 kn9.26 km/h
    8 kn14.816 km/h
    10 kn18.52 km/h
    12 kn22.224 km/h
    15 kn27.78 km/h
    20 kn37.04 km/h
    25 kn46.3 km/h
    30 kn55.56 km/h
    35 kn64.82 km/h
    40 kn74.08 km/h
    50 kn92.6 km/h
    60 kn111.12 km/h
    100 kn185.2 km/h
    120 kn222.24 km/h
    150 kn277.8 km/h
    250 kn463 km/h
    450 kn833.4 km/h
    500 kn926 km/h

    Factors from NIST SP 811 and the BIPM SI Brochure; values rounded to 6 significant digits.

    Frequently asked questions

    How many km/h is 20 knots?

    20 kn = 37.04 km/h.

    How many knots is 1 km/h?

    1 km/h = 0.539957 kn.

    Open the full calculator: Speed Converter: mph to km/h, Knots, m/s and Mach →