Speed Converter

Convert speed between mph, km/h, m/s, and knots.

Value

From

To

Converted—

⬅️ Back

🧭 About 🔒 Policy ✉ Contact

v1.2.460

Speed Converter

Speed is distance over time

Speed conversion combines a distance unit and a time unit. Miles per hour, kilometers per hour, meters per second, and knots all describe how far something travels in a fixed amount of time.

Use this tool for travel, running, cycling, aviation, marine speeds, game values, physics examples, or quick vehicle comparisons. For example, 100 km/h is about 62.14 mph.

Average speed and instant speed are different. A trip with traffic stops may have a much lower average speed than the speed shown while moving.

Quick note

Related tools: Pace Converter is better for runners because it describes time per distance.

🧭

About

Super Fast Tool is a focused collection of browser tools for calculations, conversions, generation, and file utilities.

Files and calculations are processed locally in your browser whenever possible. Learn more on the Privacy Policy page.

Privacy Policy

Most tool inputs and supported file operations are handled in your browser. Contact form submissions are sent through Formspree, and external services may process limited technical information.

Read the full Privacy Policy for cookies, advertising, local storage, and third-party service details.

Send feedback, bug reports, or calculator ideas.