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🚗 MPH to KPH Konverterer

Konverter miles per hour to kilometres per hour. Also shows metres per second for scientific reference.

ℹ️ Bemærk: All conversions use internationally recognised exact or standard values.

Hastighed Limits Around the World — MPH vs KPH

Miles per hour (mph) is the standard unit of speed used on road signs in the United States and a small number of other territories. The rest of the world, including all of Europe, uses kilometres per hour (km/h or kph). This distinction becomes important when driving abroad, comparing international speed records, or understanding vehicle speedometers.

Common speed limit comparisons: European motorway limit of 120–130 kph = 74.6–80.8 mph; US highway limit of 65 mph = 104.6 kph; urban limit of 50 kph = 31.1 mph. Formula One cars can exceed 350 kph (217 mph).

For scientific and engineering contexts, speed is often expressed in metres per second (m/s). To convert from kph to m/s, divide by 3.6. This is because 1 km/h = 1000 m / 3600 s = 1/3.6 m/s.

Formula

For at konvertere mph til kph: kph = mph × 1.609344. For at konvertere kph til m/s: m/s = kph ÷ 3.6.

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Accurate Conversions: All conversion factors used are internationally standardised values from the International System of Units (SI) and are exact where defined.

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