Knots to Feet per second Converter

1 knot is equal to 1.68781 feet per second, or 1.15078 mph.

Enter a value in the converter to get the result. This page explains the formula, works through examples and lists common values in a conversion table.

How to convert knots to feet per second

Multiply the value in knots by 1.68781 to get feet per second.

ft/s = × 1.68781
  1. 1Start with the value in knots: 1 knot.
  2. 2Apply the formula: × 1.68781 = 1.68780965008.
  3. 3Round to the precision you need: 1.68781 ft/s.

For a quick estimate without a calculator, multiply by 1.7. For 1 knot that gives about 1.7 ft/s.

Examples

10 knot to ft/s × 1.68781
= 16.8781 ft/s50 knot to ft/s × 1.68781
= 84.3905 ft/s250 knot to ft/s × 1.68781
= 421.952 ft/s

Knots to Feet per second conversion table

Knots (knot)Feet per second (ft/s)Miles per hour (mph)
1 knot1.68781 ft/s1.15078 mph
5 knot8.43905 ft/s5.7539 mph
10 knot16.8781 ft/s11.5078 mph
20 knot33.7562 ft/s23.0156 mph
25 knot42.1952 ft/s28.7695 mph
50 knot84.3905 ft/s57.539 mph
75 knot126.586 ft/s86.3084 mph
100 knot168.781 ft/s115.078 mph
150 knot253.171 ft/s172.617 mph
200 knot337.562 ft/s230.156 mph
500 knot843.905 ft/s575.39 mph
1,000 knot1,687.81 ft/s1,150.78 mph

1 knot in other units

The same value in every other unit of this category. Each row links to the full conversion.

UnitFormula1 knot equals
Knots to Metres per secondm/s = × 0.514444244160.514444 m/s
Knots to Kilometres per hourkm/h = × 1.8519991.852 km/h
Knots to Miles per hourmph = × 1.1507791.15078 mph
Knots to Feet per secondft/s = × 1.687811.68781 ft/s

Feet per second to Knots

The reverse conversion uses the inverse formula. For example, 1 ft/s is 0.592484 knot. Use the feet per second to knots converter for other values.

knot = ÷ 1.68781
1 ft/s to knot5 ft/s to knot10 ft/s to knot25 ft/s to knot50 ft/s to knot100 ft/s to knot500 ft/s to knot1,000 ft/s to knot

About the units

Knot (knot)

A unit of speed in the imperial and US customary systems. 1 knot = 1.68781 ft/s.

Foot per second (ft/s)

A unit of speed in the imperial and US customary systems. 1 ft/s = 0.592484 knot.

Accuracy and rounding

The calculation uses exact decimal arithmetic, so the conversion itself adds no error. Results are rounded to six significant figures; the formula steps show more digits.

More knots to feet per second conversions

2 knot to ft/s5 knot to ft/s10 knot to ft/s20 knot to ft/s25 knot to ft/s50 knot to ft/s75 knot to ft/s100 knot to ft/s150 knot to ft/s200 knot to ft/s250 knot to ft/s500 knot to ft/s1,000 knot to ft/s

FAQ

How many feet per second are in one knot?

One knot is equal to 1.68781 feet per second.

How do I convert feet per second back to knots?

Use the formula knot = ÷ 1.68781. See the feet per second to knots converter.