You are driving through Canada. The speed limit sign says 100. You panic. "100 miles per hour?! That's insane!" Then you remember: Canada uses kilometers. 100 km/h is only 62 mph—a normal highway speed. Or you are watching a flight tracker. The plane is cruising at 450 knots. You have no idea if that's fast or slow. Or your internet provider promises "100 Mbps," but your downloads crawl at 12 MB/s. Are they lying? A Speed Converter is the translator that makes sense of this chaos. It instantly converts between the many different units humans use to measure how fast things move—whether it's cars, planes, data, or wind. This guide explains exactly how speed conversion works, why sailors use "knots" instead of miles, and why your car's speedometer lies to you on purpose. What Is a Speed Converter? A Speed Converter is a digital calculator that translates a velocity measurement from one unit (like miles per hour) to another (like kilometers per...