Convert Knot to Foot per second
Unit definitions
Knot
A nautical mile is a unit of length used in navigation and is equal to $1\,852$ meters. A knot is a unit of speed expressed in nautical miles per hour.
Foot per second
A foot is a unit of length equal to $0.304\,8 \ \text{m}$. Foot per second is the distance traveled in feet in one second.
How to convert Knot to Foot per second
$$\text{Speed}_{\text{fts⁻¹}} = \text{Speed}_{\text{kn}} \cdot 1.687809857101195683872849227179936$$
Examples
Example 1
Convert $25.0\ \text{kn}$ to $\text{fts⁻¹}$.
$$\text{Speed}_{\text{fts⁻¹}} = 25.0 \cdot 1.687809857101195683872849227179936$$
$$\text{Speed}_{\text{fts⁻¹}} = 42.195246$$
$$\therefore \ 25.0\ \text{kn} = 42.195246 \ \text{fts⁻¹}$$
Example 2
Convert $75.0\ \text{kn}$ to $\text{fts⁻¹}$.
$$\text{Speed}_{\text{fts⁻¹}} = 75.0 \cdot 1.687809857101195683872849227179936$$
$$\text{Speed}_{\text{fts⁻¹}} = 126.585739$$
$$\therefore \ 75.0\ \text{kn} = 126.585739 \ \text{fts⁻¹}$$
Example 3
Convert $100.0\ \text{kn}$ to $\text{fts⁻¹}$.
$$\text{Speed}_{\text{fts⁻¹}} = 100.0 \cdot 1.687809857101195683872849227179936$$
$$\text{Speed}_{\text{fts⁻¹}} = 168.780986$$
$$\therefore \ 100.0\ \text{kn} = 168.780986 \ \text{fts⁻¹}$$
Example 4
Convert $150.0\ \text{kn}$ to $\text{fts⁻¹}$.
$$\text{Speed}_{\text{fts⁻¹}} = 150.0 \cdot 1.687809857101195683872849227179936$$
$$\text{Speed}_{\text{fts⁻¹}} = 253.171479$$
$$\therefore \ 150.0\ \text{kn} = 253.171479 \ \text{fts⁻¹}$$
Example 5
Convert $160.0\ \text{kn}$ to $\text{fts⁻¹}$.
$$\text{Speed}_{\text{fts⁻¹}} = 160.0 \cdot 1.687809857101195683872849227179936$$
$$\text{Speed}_{\text{fts⁻¹}} = 270.049577$$
$$\therefore \ 160.0\ \text{kn} = 270.049577 \ \text{fts⁻¹}$$