1. What is MPH?

MPH stands for miles per hour, a unit of speed commonly used in the United States and United Kingdom to express the number of miles traveled in one hour.

2. How Does the Conversion Work?

The calculator uses the conversion formula:

Where:

• 1 kilometer = 0.621371 miles
• The conversion factor remains constant

Explanation: This linear conversion transforms kilometers per hour to miles per hour by multiplying by the kilometer-to-mile conversion factor.

3. Importance of Speed Conversion

Details: Accurate speed conversion is crucial for international travel, vehicle speedometers, aviation, and understanding speed limits when driving in different countries.

4. Using the Calculator

Tips: Enter speed in kilometers per hour (km/h). The value must be positive. The calculator will instantly convert it to miles per hour (mph).

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 0.621371?
A: This is the exact conversion factor between kilometers and miles (1 km = 0.621371 miles).

Q2: How accurate is this conversion?
A: The conversion is mathematically exact. The calculator provides results rounded to 2 decimal places for practicality.

Q3: What's the difference between km/h and mph?
A: They measure the same thing (speed) but use different distance units (kilometers vs miles) per hour.

Q4: Can I convert mph back to km/h?
A: Yes, by dividing mph by 0.621371 or multiplying by 1.60934 (the reciprocal).

Q5: Which countries use mph vs km/h?
A: The US, UK, and a few others use mph. Most countries worldwide use km/h.