# Speed Conversion Calculator

> Convert speed between metric, imperial, nautical, and Mach units.

Page: https://askcalculators.com/calculator/speed-conversion-calculator/
Definition: https://askcalculators.com/calculator/speed-conversion-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/speed-conversion-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/speed-conversion-calculator/?value=60&fromUnit=mph&toUnit=kph

## Inputs
- value: Speed; type=number; required; default=60
- fromUnit: From unit; type=select; required; default=mph; values=mps|kph|mph|fps|knot|mach
- toUnit: To unit; type=select; required; default=kph; values=mps|kph|mph|fps|knot|mach

## Outputs
- result: Converted speed; format=number; primary
- metersPerSecond: Meters per second; format=number

## Formula
m/s = value × meters-per-second factor; result = m/s ÷ target factor

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.