Speed Converter

Convert among m/s, km/h, miles per hour (mph), feet per second (ft/s), and knots (kn).

Speed
4
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Related Conversions
5 mph to m/s 20 mph to m/s 75 mph to m/s 90 mph to m/s 100 mph to m/s 126 mph to m/s 154 mph to m/s 180 mph to m/s 200 mph to m/s 280 mph to m/s 336 mph to m/s 560 mph to m/s
Reverse Conversions
5 m/s to mph 55 m/s to mph 70 m/s to mph 80 m/s to mph 90 m/s to mph 100 m/s to mph 120 m/s to mph 180 m/s to mph 224 m/s to mph 280 m/s to mph 560 m/s to mph 2,800 m/s to mph
More Speed Conversions
30 km/h to mph 50 km/h to mph 50 kn to km/h 55 mph to km/h 65 mph to km/h 70 mph to km/h 80 km/h to mph 80 mph to km/h 100 km/h to mph 100 kn to mph 120 km/h to mph 340.29 m/s to km/h

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Popular Conversions

Miles Per Hour to Kilometers Per Hour Kilometers Per Hour to Miles Per Hour Meters Per Second to Kilometers Per Hour Kilometers Per Hour to Meters Per Second Knots to Miles Per Hour Miles Per Hour to Meters Per Second

Common Benchmarks

City bus 25 mph
Walking speed 3 mph
Running speed 6 mph
Sprint peak 20 mph
Elevator speed 10 mph
High-speed train 186 mph

Formula

m/s = mph × 0.44704

Example

Example: convert 140 miles per hour to meters per second.

140 mph = 62.5856 m/s

Conversion table

miles per hour (mph) meters per second (m/s)
1 mph 0.44704 m/s
2 mph 0.89408 m/s
5 mph 2.2352 m/s
10 mph 4.4704 m/s
20 mph 8.9408 m/s
50 mph 22.352 m/s
100 mph 44.704 m/s

Explanation

Miles per hour are used in the United States and the United Kingdom for road speeds, while Meters per second are common in science and engineering.

How to convert miles per hour to meters per second

  1. Start with the value in miles per hour (mph).
  2. Multiply it by 0.44704.
  3. The result is the measurement in meters per second (m/s).

Example: 140 mph → 62.5856 m/s

Frequently Asked Questions

How much is 140 miles per hour in meters per second?

140 miles per hour equals 62.5856 meters per second.

How many meters per second is 1 mile per hour?

1 mile per hour equals 0.44704 meters per second.

How many miles per hour is 1 meter per second?

1 meter per second is about 2.236936 miles per hour.

What is the difference between miles per hour and meters per second?

Both measure speed, but they use different distance and time units. Miles per hour express speed in miles and hours (mph). Meters per second express it in meters and seconds (m/s).

Where are miles per hour and meters per second used?

Miles per hour are used for road speeds and speed limits in the US and in some UK contexts. Meters per second are widely used in physics, science, and engineering for technical calculations.

Why does 1 mile per hour equal 0.44704 meters per second?

Because 1 mile equals 1609.344 meters and 1 hour equals 3600 seconds. That determines the mph to m/s factor.