## Conversion formula

The conversion factor from meters per second to miles per hour is 2.2369362920544, which means that 1 meter per second is equal to 2.2369362920544 miles per hour:

1 m/s = 2.2369362920544 mph

To convert 21 meters per second into miles per hour we have to multiply 21 by the conversion factor in order to get the velocity amount from meters per second to miles per hour. We can also form a simple proportion to calculate the result:

1 m/s → 2.2369362920544 mph

21 m/s → V(mph)

Solve the above proportion to obtain the velocity V in miles per hour:

V(mph) = 21 m/s × 2.2369362920544 mph

V(mph) = 46.975662133142 mph

The final result is:

21 m/s → 46.975662133142 mph

We conclude that 21 meters per second is equivalent to 46.975662133142 miles per hour:

21 meters per second = 46.975662133142 miles per hour ## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile per hour is equal to 0.021287619047619 × 21 meters per second.

Another way is saying that 21 meters per second is equal to 1 ÷ 0.021287619047619 miles per hour.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty-one meters per second is approximately forty-six point nine seven six miles per hour:

21 m/s ≅ 46.976 mph

An alternative is also that one mile per hour is approximately zero point zero two one times twenty-one meters per second.

## Conversion table

### meters per second to miles per hour chart

For quick reference purposes, below is the conversion table you can use to convert from meters per second to miles per hour

meters per second (m/s) miles per hour (mph)
22 meters per second 49.213 miles per hour
23 meters per second 51.45 miles per hour
24 meters per second 53.686 miles per hour
25 meters per second 55.923 miles per hour
26 meters per second 58.16 miles per hour
27 meters per second 60.397 miles per hour
28 meters per second 62.634 miles per hour
29 meters per second 64.871 miles per hour
30 meters per second 67.108 miles per hour
31 meters per second 69.345 miles per hour