Convert km/h to knots
1 km/h = 0.539957 kn · 1 kn = 1.852 km/h · Exact by definition
1 km/h = 0.539957 kn
The same value in other units
- metre per second
- 0.277778 m/s
- mile per hour
- 0.621371 mph
- minutes per kilometre
- 60 min/km
Settings
Digits kept in the answer. Automatic keeps six, which hides floating-point noise without losing anything real.
Convert a whole list
Paste one conversion per line, written the way you would say it: "5 km to mi". Handy for a column copied out of a spreadsheet.
Speed and pace
km/h to knots: conversion table
| kilometre per hour | knot |
|---|---|
| 1 km/h | 0.539957 kn |
| 2 km/h | 1.07991 kn |
| 3 km/h | 1.61987 kn |
| 5 km/h | 2.69978 kn |
| 10 km/h | 5.39957 kn |
| 20 km/h | 10.7991 kn |
| 25 km/h | 13.4989 kn |
| 50 km/h | 26.9978 kn |
| 100 km/h | 53.9957 kn |
| 250 km/h | 134.989 kn |
| 500 km/h | 269.978 kn |
| 1000 km/h | 539.957 kn |
| knot | kilometre per hour |
|---|---|
| 1 kn | 1.852 km/h |
| 2 kn | 3.704 km/h |
| 3 kn | 5.556 km/h |
| 5 kn | 9.26 km/h |
| 10 kn | 18.52 km/h |
| 20 kn | 37.04 km/h |
| 25 kn | 46.3 km/h |
| 50 kn | 92.6 km/h |
| 100 kn | 185.2 km/h |
| 250 kn | 463 km/h |
| 500 kn | 926 km/h |
| 1000 kn | 1852 km/h |
How the conversion works
kn = km/h × 0.5399568
Both units are defined exactly, so the precision of the km/h to knots result depends only on the number of decimal places you choose.
METHOD AND SOURCES
Where the conversion factors come from
Results are calculated from the unit definitions stored in the converter, not copied from a lookup table. For exact units, every value in the table follows from the same factor shown in the formula above.
- BIPM — SI Brochure
The official definitions of the International System of Units (SI).
- NIST SP 811 — Conversion factors
Conversion-factor tables for SI and non-SI units.
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