Unit Converter
Convert From Knots to Miles per Hour and Vice Versa
Knots ↔ Miles per Hour
Type in either knots or miles per hour — it’ll convert to the other automatically!
🧭 What is a Knot?
A knot is a unit of speed used in **aviation**, **maritime navigation**, and **meteorology**, representing **1 nautical mile per hour**. That’s equal to 1.15078 miles per hour (mph).
🚗 What is Miles per Hour (mph)?
Miles per hour is a unit of speed commonly used in the **United States** and **UK** for measuring speed of vehicles and wind. 1 mph = 0.868976 knots.
🧠 Quick Comparison
| Unit | Equivalent | Used In |
|---|---|---|
| 1 knot | 1.15078 mph | Aviation, maritime, weather |
| 1 mph | 0.868976 knots | Cars, road signs, speedometers |
🧮 How to Convert
Knots to Miles/Hour: mph = knots × 1.15078
Miles/Hour to Knots: knots = mph × 0.868976
Example:
100 knots × 1.15078 = 115.08 mph
💡 Pro Tip
In flight plans, wind reports, or ship logs, you’ll always see speed in **knots**. For road or land travel, **mph** is more common — especially in the U.S. and UK.
🎉 Did You Know?
1 knot is approximately the speed of a gentle breeze, while commercial airplanes cruise at around 480–520 knots (over 600 mph)!
✈️ Real-World Speed Examples
- 10 knots – Small boat speed
- 20 knots – Sailboat racing
- 100 knots – Light aircraft cruising
- 500 knots – Commercial airliner cruising speed
📊 Knots to Miles/Hour Conversion Chart
| Knots | Miles/Hour (mph) |
|---|---|
| 1 | 1.15 |
| 10 | 11.51 |
| 50 | 57.54 |
| 100 | 115.08 |
| 300 | 345.23 |
| 500 | 575.39 |
📜 Timeline: Knots vs MPH
- 1600s: Knots measured using rope and a sandglass by sailors
- 1900s: Cars popularize mph in land transport
- Today: Aircraft, ships, and weather forecasts use knots; cars use mph (or km/h)
🌐 When to Use Knots vs mph
- 🛫 Knots: Airspeed, windspeed, nautical speed
- 🚘 Miles/Hour: Driving, land travel, road signs in US/UK
- 📏 Quick Tip: Multiply knots by 1.15 for an easy mph estimate
🎯 Interactive Converter
100 knots = 115.08 mph