Speed Conversion Calculator

US Units

Metric Units


Welcome to our in-depth guide on Speed Conversions! Whether you are a student, a professional, or just someone with a keen interest in understanding different units of speed, this page is your one-stop resource. Speed conversion is essential in various fields, including automotive, aerospace, sports, and science. Here, we’ll delve into the most commonly used speed units in both the U.S. Customary System and the Metric System, offering clear conversion methods and practical examples.

Understanding Speed Units

1. U.S. Customary Units of Speed:

  • Inches per Second (ips): Used for small-scale speed measurements.
  • Feet per Second (fps): Common in scientific and engineering contexts.
  • Yards per Second (yps): Occasionally used in sports.
  • Miles per Hour (mph): The standard for road speeds and vehicles.
  • Knots: Primarily for maritime and aviation navigation.

2. Metric Units of Speed:

  • Millimeters per Second (mm/s): For precise, small-scale speed measurement.
  • Centimeters per Second (cm/s): Used in various scientific calculations.
  • Meters per Second (m/s): The standard unit in scientific research.
  • Kilometers per Hour (km/h): Common for road speed limits outside the U.S.
  • Kilometers per Second (km/s): Used in astronomical contexts.

How to Convert Speed Units

Converting speed units requires understanding the relationship between different units. Here’s a quick guide:

  • To convert from smaller to larger units (e.g., fps to mph), divide by the conversion factor.
  • To convert from larger to smaller units (e.g., mph to fps), multiply by the conversion factor.

Example Conversions:

  • Converting 60 mph to fps: 60 × 1.46667 = 88 fps
  • Converting 100 km/h to m/s: 100 ÷ 3.6 = 27.78 m/s

Frequently Asked Questions

1) What are the most commonly used speed units?

The most common units are miles per hour (mph) in the U.S. and kilometers per hour (km/h) in most other countries.

2) How do I convert speeds for running or cycling?

Typically, these speeds are measured in either mph or km/h, depending on the country.

3) Why are different units used in different countries?

This is mainly due to the historical development of measurement systems and standardization in different regions.

4) Can I use these conversions in GPS navigation?

Yes, understanding these conversions can be handy in interpreting GPS speed readings, especially when traveling abroad.