Speed Converter - Convert km/h, mph, m/s, knots, and ft/s Instantly

Need a fast and accurate way to convert speed units? Our Speed Converter is designed to give you instant results for all common speed measurements. Whether you want to change kilometers per hour to miles per hour, meters per second to mph, or knots to mph, this tool saves time and avoids manual calculation errors.

Why Use a Speed Converter?

Speed is a fundamental concept in physics, transport, and daily life. Different countries and industries use different units, which makes conversion essential.

• Cars: In the US, vehicle speed is measured in mph, while Europe uses km/h.
• Aviation: Pilots measure airspeed in knots.
• Sports: Athletics often record speed in meters per second.
• Weather: Wind speed is shown in mph, km/h, or knots.

Our speed converter brings all these measurements into one simple and reliable tool.

Key Features of Our Speed Converter

• Accurate formulas: Based on international standards.
• Two-way conversion: Switch between any two units instantly.
• Multiple units supported: km/h, mph, m/s, ft/s, knots.
• Easy to use: Enter the value and get results immediately.
• Device-friendly: Works smoothly on both mobile and desktop.

Common Speed Units:

Kilometers per Hour (km/h)

• Used in most countries for road speeds.
• 1 km/h = 0.621 mph.

Miles per Hour (mph)

• Standard in the US and UK.
• 1 mph = 1.609 km/h.

Meters per Second (m/s)

• SI unit of speed used in physics and engineering.
• 1 m/s = 3.6 km/h.

Feet per Second (ft/s)

• Common in physics problems and sports analysis.
• 1 ft/s = 0.681 mph.

Knots (kt)

• Used in aviation, marine navigation, and meteorology.
• 1 knot = 1.15078 mph.

How to Convert Speed Units

General Formula:

Speed = Distance ÷ Time

Conversions depend on the relationship between base units. For example:

• km/h to mph: Multiply km/h by 0.621.
• mph to km/h: Multiply mph by 1.609.
• m/s to mph: Multiply m/s by 2.237.
• knots to mph: Multiply knots by 1.15078.

Speed Conversion Examples

Example 1: Convert 100 km/h to mph

Formula = mph = km/h × 0.621

100 × 0.621 = Result = 62.1 mph

Example 2: Convert 60 mph to km/h

Formula = km/h = mph × 1.609

60 × 1.609 = Result = 96.54 km/h

Example 3: Convert 20 m/s to mph

Formula = mph = m/s × 2.237

20 × 2.237 = Result = 44.74 mph

Applications of Speed Conversion

• Transportation: Drivers and travelers compare speed limits across countries.
• Aviation: Air traffic controllers and pilots use knots, but passengers prefer mph or km/h.
• Maritime navigation: Ships and boats calculate knots, then convert to mph for reporting.
• Sports: Runners, cyclists, and athletes track performance in different units.
• Weather forecasts: Meteorologists measure wind speed in knots or km/h, but convert to mph for the public.
• Engineering: Speed converters help in designing engines, turbines, and testing performance.

Quick Reference Speed Conversion Table

Use our Speed Converter at Digital Calculator for fast, reliable, and accurate conversions in driving, sports, aviation, maritime travel, physics, and weather studies.

Our Popular Speed Converter:

HP To kW Converter

Meters Per Second To Miles Per Hour

Knots To Miles Per Hour Converter

Feet Per Second To Miles Per Hour