A knot is one nautical mile per hour.
Knots to Yard per Seconds Converter — kn to yd/s
Convert Knots (kn) to Yard per Seconds (yd/s) using the exact conversion factor (1 knots = 0.5626032857 yard per seconds). See the formula, worked examples, conversion table, history, and common uses.
Knots to Yard per Seconds converter
Converter
Speed Converter
Convert road, aviation, marine, lab, and scientific speed units.
Context values
Some unit families need one extra value for a physically accurate result.
Distance divided by time.
Result = input x 0.5144444444 / 0.9144.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Knots to Yard per Seconds
Knots and Yard per Seconds both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Knots is most often used for ship and boat speed in marine navigation.
Formula
yard per seconds = knots × 0.5626032857
This factor comes from each unit's defined relationship to the category's base unit: 1 knots equals 0.514444444444 base units, and 1 yard per seconds equals 0.9144 base units, so dividing one by the other gives the direct knots-to-yard per seconds factor of 0.5626032857.
Simple example
1 kn × 0.5626032857 = 0.5626032857 yd/s
1 knots = 0.5626032857 yard per seconds.
Real-world example
10 kn × 0.5626032857 = 5.626032857 yd/s
10 knots = 5.626032857 yard per seconds.
Conversion table
| Knots (kn) | Yard per Seconds (yd/s) |
|---|---|
| 1 kn | 0.5626032857 yd/s |
| 5 kn | 2.813016429 yd/s |
| 10 kn | 5.626032857 yd/s |
| 25 kn | 14.06508214 yd/s |
| 50 kn | 28.13016429 yd/s |
| 100 kn | 56.26032857 yd/s |
Reverse conversion: Yard per Seconds to Knots
0.5626032857 yd/s × 1.777451404 = 1 kn
0.5626032857 yard per seconds = 1 knots.
knots = yard per seconds × 1.77745140389
For a page dedicated to this direction, see Yard per Seconds to Knots.
Understanding the Knots
Knots (kn) measures speed. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. It is classified as a Non-SI unit accepted for use with SI (maritime/aviation).
Where it's used: Used internationally in maritime navigation and aviation
Uses of the Knots today
- Ship and boat speed in marine navigation
- Aircraft airspeed and wind speed reporting in aviation
- Marine weather forecasts (wind speed)
History of the Knots
The knot gets its name from an old nautical method of measuring speed: sailors trailed a 'log line' with evenly spaced knots behind a ship and counted how many knots paid out over a fixed time, giving a direct speed reading in 'knots.'
The nautical mile it's based on was itself standardized internationally in 1929 (the International Nautical Mile, 1,852 m exactly), tying the knot to a precise value still used in shipping and aviation today.
Historical origin. Knots was not the invention of a single named person; it developed through the process described above.
Understanding the Yard per Seconds (yd/s)
Distance divided by time.
Knots — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Lists the knot among accepted non-SI speed units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yard per seconds are in 1 knots?
1 knots equals 0.5626032857 yard per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert knots to yard per seconds?
Multiply the knots value by 0.5626032857. The converter above does this instantly to whatever precision you set.
How do I convert yard per seconds back to knots?
Use the reverse factor: 1 yard per seconds equals 1.777451404 knots. You can also use the swap control in the converter above to flip the direction instantly.
What is a knots?
Knots (kn) measures speed. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. It is classified as a Non-SI unit accepted for use with SI (maritime/aviation).
What is a yard per seconds?
Yard per Seconds (yd/s) is a unit of speed.
Is the knots to yard per seconds conversion exact?
Yes. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the knots still used today?
Used internationally in maritime navigation and aviation