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Speed Converter (MPH/KPH)

Instantly convert between MPH and KPH speed units.

Converted speed

62.1mph

💡 Metric and imperial units converted.

km/h
100.0

How it works

Rental cars in the US and UK show mph on the dash. Since km/h and mph differ by a factor of 1.60934, reading speed with a km/h instinct abroad easily leads to speeding. Convert posted limits ahead of time to get a feel for it.

FAQ

Q. How many mph is 100 km/h?

A. About 62.1 mph — a handy reference point for gauging highway speed limits.

Q. Do road signs vary by country?

A. Yes — the US and UK use mph, while Korea and most other countries use km/h. Always check before renting.

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