## Conversion formula

The conversion factor from feet per second to miles per hour is 0.68181818181818, which means that 1 foot per second is equal to 0.68181818181818 miles per hour:

1 ft/s = 0.68181818181818 mph

To convert 320 feet per second into miles per hour we have to multiply 320 by the conversion factor in order to get the velocity amount from feet per second to miles per hour. We can also form a simple proportion to calculate the result:

1 ft/s → 0.68181818181818 mph

320 ft/s → V(mph)

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

V(mph) = 320 ft/s × 0.68181818181818 mph

V(mph) = 218.18181818182 mph

The final result is:

320 ft/s → 218.18181818182 mph

We conclude that 320 feet per second is equivalent to 218.18181818182 miles per hour:

320 feet per second = 218.18181818182 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 0.0045833333333333 × 320 feet per second.

Another way is saying that 320 feet per second is equal to 1 ÷ 0.0045833333333333 miles per hour.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three hundred twenty feet per second is approximately two hundred eighteen point one eight two miles per hour:

320 ft/s ≅ 218.182 mph

An alternative is also that one mile per hour is approximately zero point zero zero five times three hundred twenty feet per second.

## Conversion table

### feet per second to miles per hour chart

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

feet per second (ft/s) miles per hour (mph)
321 feet per second 218.864 miles per hour
322 feet per second 219.545 miles per hour
323 feet per second 220.227 miles per hour
324 feet per second 220.909 miles per hour
325 feet per second 221.591 miles per hour
326 feet per second 222.273 miles per hour
327 feet per second 222.955 miles per hour
328 feet per second 223.636 miles per hour
329 feet per second 224.318 miles per hour
330 feet per second 225 miles per hour