How to Convert mph to km/h: Complete Guide

Converting from mph to km/h is a common task in driving, aviation, marine navigation, and sports performance. Whether you need a quick answer or want to understand the math behind the conversion, this guide covers everything you need.

Quick Answer

**1 mph = 1.60934 km/h**. To convert any value from mph to km/h, multiply by 1.60934.

The Conversion Formula

The formula is straightforward: **km/h = mph × 1.60934**. For the reverse conversion, divide by 1.60934 instead: **mph = km/h ÷ 1.60934**.

Common Conversion Table

Here are the most commonly needed conversions: - 0.1 mph = 0.160934 km/h - 0.5 mph = 0.804671 km/h - 1 mph = 1.60934 km/h - 2 mph = 3.21869 km/h - 3 mph = 4.82803 km/h - 5 mph = 8.04671 km/h - 10 mph = 16.0934 km/h - 15 mph = 24.1401 km/h - 20 mph = 32.1869 km/h - 25 mph = 40.2336 km/h - 50 mph = 80.4671 km/h - 100 mph = 160.934 km/h - 250 mph = 402.336 km/h - 500 mph = 804.671 km/h - 1000 mph = 1609.34 km/h

When You Need This Conversion

This conversion is commonly needed in driving, aviation, marine navigation, and sports performance. Understanding the relationship between mph and km/h helps you work efficiently across different measurement systems and standards.

Tips for Quick Conversions

Since 1 mph equals 1.60934 km/h, you can estimate by knowing the conversion factor 1.60934. For precise results, use our free converter which handles all the math instantly.

Use Our Free Converter

Skip the manual math and use our free mph to km/h converter for instant, accurate results. It includes a conversion table, formula explanation, and related conversions — all optimized for mobile and desktop.