Speed Converter
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km/h
Speed & Velocity Conversion
Whether you are driving through Europe (km/h) or the USA (mph), sailing the high seas (knots), or studying physics (m/s), speed units can be confusing. CalculatorBud’s **Speed Converter** helps you instantly translate velocity measurements into the unit you need.
MPH vs. KM/H Cheat Sheet
Driving abroad? Here are the most common speed limits you will encounter:
| MPH (Miles/Hr) | KM/H (Kilometers/Hr) | Context |
|---|---|---|
| 20 mph | 32 km/h | School Zones |
| 30 mph | 48 km/h | City Streets |
| 60 mph | 97 km/h | Highway / A-Roads |
| 70 mph | 113 km/h | Motorway / Freeway |
| 100 mph | 161 km/h | Very Fast! |
What are Knots and Mach?
• **Knots (kn):** Used exclusively in aviation and maritime (boats). One knot is one Nautical Mile per hour (1.15 mph).
• **Mach:** Based on the speed of sound. Mach 1 is the speed of sound (approx 767 mph). Fighter jets often fly at Mach 2 or higher.