# Speed Calculator

> Calculate average speed and pace from distance and elapsed time.

Page: https://askcalculators.com/calculator/speed-calculator/
Definition: https://askcalculators.com/calculator/speed-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/speed-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-calculator/?distance=120&timeHours=2&unitName=miles

## Inputs
- distance: Distance; type=number; required; default=120; min=0
- timeHours: Elapsed time; type=number; required; default=2; min=1e-9
- unitName: Distance unit name; type=text; optional; default=miles

## Outputs
- speed: Average speed; format=number; primary
- speedUnit: Speed unit; format=text
- pace: Pace per distance unit; format=text
- totalMinutes: Elapsed minutes; format=number

## Formula
Speed = distance ÷ time; pace = time ÷ distance

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