---
title: "Knots to Feet per second — kn to ft/s converter"
description: "1 knot = 1.68781 feet per second. Convert knots to feet per second with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/knots-to-feet-per-second/
site: "At One Place"
---

# Knots to feet per second

**1 knot in feet per second: 1 kn = 1.68781 ft/s**

ft/s = kn × 1.687809857

To convert knots to feet per second, multiply by 1.687809857. The table below gives the values people look up most often, and the converter works for any number.

## Knots to feet per second table

*Common knot values converted to feet per second.*

| Knots | Feet per second |
| --- | --- |
| 1 kn | 1.68781 |
| 2 kn | 3.37562 |
| 3 kn | 5.06343 |
| 4 kn | 6.751239 |
| 5 kn | 8.439049 |
| 10 kn | 16.8781 |
| 15 kn | 25.31715 |
| 20 kn | 33.7562 |
| 25 kn | 42.19525 |
| 30 kn | 50.6343 |
| 40 kn | 67.51239 |
| 50 kn | 84.39049 |
| 75 kn | 126.5857 |
| 100 kn | 168.781 |
| 250 kn | 421.9525 |
| 500 kn | 843.9049 |
| 1,000 kn | 1,687.8099 |

## How the conversion works

The relationship is ft/s = kn × 1.687809857. Both units measure speed, so the conversion is a fixed factor that never changes.

## Common questions

### How many feet per second are in one knot?

One knot equals 1.68781 feet per second. ft/s = kn × 1.687809857.

### How do you convert knots to feet per second?

Use ft/s = kn × 1.687809857. So 10 kn is 16.8781 ft/s.

### How many knots are in one foot per second?

One foot per second equals 0.59248 knots, which is the reverse of the conversion above.

## Related pages

- [Feet per second to Knots](https://atoneplace.net/convert/feet-per-second-to-knots/)
- [Knots to Meters per second](https://atoneplace.net/convert/knots-to-meters-per-second/)
- [Knots to Kilometers per hour](https://atoneplace.net/convert/knots-to-kmh/)
- [Knots to Miles per hour](https://atoneplace.net/convert/knots-to-mph/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)