1. What is a Knots Speed Calculator?

Definition: This calculator measures speed in knots based on distance traveled in nautical miles and time taken in hours.

Purpose: It helps mariners, aviators, and navigation professionals calculate speed over water or air.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( S \) — Speed (knots)
• \( D \) — Distance (nautical miles)
• \( T \) — Time (hours)

Explanation: The distance in nautical miles is divided by the time in hours to get speed in knots.

3. Importance of Knots Measurement

Details: Knots is the standard unit of speed in maritime and aviation navigation, equivalent to one nautical mile per hour.

4. Using the Calculator

Tips: Enter the distance in nautical miles and time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why use knots instead of mph or km/h?
A: Knots are used in navigation because they relate directly to nautical miles and the Earth's latitude/longitude system.

Q2: What's the difference between a nautical mile and a statute mile?
A: A nautical mile (1,852 meters) is about 15% longer than a statute mile (1,609 meters) and is based on the Earth's circumference.

Q3: How accurate is this calculation?
A: The calculation is mathematically precise, but real-world factors like currents or wind may affect actual speed.

Q4: Can I use this for airspeed calculations?
A: Yes, knots are also the standard speed measurement in aviation.

Q5: How do I convert knots to other speed units?
A: 1 knot = 1.15078 mph = 1.852 km/h = 0.514444 m/s.