What is the speed converter?
The speed converter is a collection of calculators for changing one speed unit into another. Convert speed units for driving, running, aviation, weather, and physics calculations.
Speed conversions are useful for driving, running pace, cycling, aviation, marine navigation, weather reports, and physics calculations.
Available speed units
This category includes the following units:
- Mile per Hour (mph)
- Kilometer per Hour (kph)
- Meter per Second (m/s)
- Foot per Second (ft/s)
- Knot (kn)
Common speed use cases
Use this category when the same measurement appears in different unit systems, data sheets, calculators, reports, or regional conventions.
- Speed conversions help compare measurements across specifications, calculators, labels, and technical references.
- Use this category when source data and target documents use different speed units.
- The dedicated conversion pages show formulas, examples, tables, related pages, and FAQ for individual unit pairs.
Popular speed units explained
These short unit notes help readers choose the right starting unit before opening a specific conversion page.
Mile per Hour (mph)
Miles per hour is a speed unit commonly used for road speed limits and vehicle speeds in the United States and the United Kingdom.
Browse mph conversionsKilometer per Hour (kph)
Kilometers per hour is a metric speed unit commonly used for road speed limits, vehicles, cycling, and travel speeds.
Browse kph conversionsMeter per Second (m/s)
Meter per Second (m/s) is a speed unit.
Browse meters-per-second conversionsFoot per Second (ft/s)
Foot per Second (ft/s) is a speed unit.
Browse feet-per-second conversionsKnot (kn)
Knot (kn) is a speed unit.
Browse knots conversionsCommon speed conversion mistakes
Most wrong answers come from mixing unit systems, rounding too early, or choosing a unit that looks similar but means something different.
- Do not hide the original speed unit when copying a result into a report, label, or calculator.
- Do not round intermediate values when the result will be reused in another formula.
- Check whether the source and target units describe the same physical quantity before comparing speed values.
Popular speed conversion pages
Start with one of these common speed conversions:
Browse speed conversions by starting unit
Use these grouped links when you know the unit you are starting from and want to compare several destination units.
Mile per Hour conversions
Start with miles per hour and convert to common speed units.
Kilometer per Hour conversions
Start with kilometers per hour and convert to common speed units.
Meter per Second conversions
Start with meters per second and convert to common speed units.
Foot per Second conversions
Start with feet per second and convert to common speed units.
Knot conversions
Start with knots and convert to common speed units.
All speed conversion pages
This complete index helps users and search engines discover every generated speed conversion page.
Related categories and references
Use these links to move between neighboring converter categories, hand-written unit references, popular units, and complete site indexes.
Unit Wiki and references
Popular speed units
Complete indexes and tools
How speed conversion works
Most pages in this category use a conversion factor between two units. The calculator applies that factor automatically and shows the result instantly.
How to use this converter
Enter a value, choose the units, and read the converted result immediately. Each dedicated conversion page also includes a formula, examples, a conversion table, related links, and FAQ.
FAQ
Which speed units are included?
This category includes miles per hour, kilometers per hour, meters per second, feet per second, knots and related units.
Are formulas included?
Yes. Individual conversion pages include formulas, manual steps, examples, and conversion tables.