kmph to mph Converter

Convert kilometers per hour to miles per hour accurately.

Try it yourself

Speed Converter

Convert speed units instantly

1 km/h = 0.621371 mph
Live conversion result
How it works

Base unit: mps. Values convert via the base unit for this category.

Formula (scale-only): mph = kmph × 0.621371
That is, multiply by 0.621371 to convert kmph to mph.
Examples
  • 1 kmph = 0.621371 mph
  • 5 kmph = 3.10686 mph
Tips
  • 1 mph = 1.609344 km/h.

Popular conversions

kmphmph
10.621371
53.10686
106.21371
10062.1371

Examples

  • Common metric speed limit:100 kmph = 62.1371 mph
  • 50 kmph = 31.0686 mph

How to convert

mph = kmph × 0.621371. Multiply the value in kmph by 0.621371 to get mph.

Related conversions

mph to kphmps to kmphknot to kmph

FAQs

  • What’s the km/h to mph factor?

    Multiply by 0.6213711922 (the reciprocal of 1.609344).

  • Is rounding important?

    For road speeds, two decimals are typically enough.

  • How do I convert mph to km/h?

    Multiply mph by 1.609344.