Speed Converter

Convert miles per hour, kilometers per hour, and related speed units — built for trap speed, cruise, and speedo math.

Trap speed, cruise, speedo checks

Full unit converter
Formula

multiply the speed value by 1.60934

Full speed board

Same input, every speed unit — tap a tile to set the right-hand unit.

mph to km/h and other speed units

  • 1 mph = 1.609344 km/h exactly — the factor behind US↔metric speed claims.
  • Trap slips and GPS apps mix mph and km/h; convert before you brag or tune.
  • m/s and ft/s stay on the board for physics-style sheets and data logs.

US road and drag culture speaks mph. Most of the world — and many GPS logs — use km/h. This speed converter is for those swaps, plus m/s and ft/s when a data sheet gets academic.

Enter trap speed, cruise target, or a speedo reading and flip units instantly. Cookie memory keeps your last pair.

Legal speed limits and certified traps still win over a phone converter — use this for comparison math, not courtroom proof.

How to convert automotive speeds

  1. Enter the speed you have. Use the trap slip, GPS readout, or speedometer figure.
  2. Choose mph or km/h. Read the paired result, or tap a board tile for m/s or ft/s.
  3. Compare like with like. Convert both runs to the same unit before stacking times or cruise targets.

Speed converter FAQ

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