## Conversion formula

The conversion factor from knots to miles per hour is 1.1507794480225, which means that 1 knot is equal to 1.1507794480225 miles per hour:

1 kt = 1.1507794480225 mph

To convert 121 knots into miles per hour we have to multiply 121 by the conversion factor in order to get the velocity amount from knots to miles per hour. We can also form a simple proportion to calculate the result:

1 kt → 1.1507794480225 mph

121 kt → V(mph)

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

V(mph) = 121 kt × 1.1507794480225 mph

V(mph) = 139.24431321073 mph

The final result is:

121 kt → 139.24431321073 mph

We conclude that 121 knots is equivalent to 139.24431321073 miles per hour:

121 knots = 139.24431321073 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 0.0071816218338959 × 121 knots.

Another way is saying that 121 knots is equal to 1 ÷ 0.0071816218338959 miles per hour.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one hundred twenty-one knots is approximately one hundred thirty-nine point two four four miles per hour:

121 kt ≅ 139.244 mph

An alternative is also that one mile per hour is approximately zero point zero zero seven times one hundred twenty-one knots.

## Conversion table

### knots to miles per hour chart

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

knots (kt) miles per hour (mph)
122 knots 140.395 miles per hour
123 knots 141.546 miles per hour
124 knots 142.697 miles per hour
125 knots 143.847 miles per hour
126 knots 144.998 miles per hour
127 knots 146.149 miles per hour
128 knots 147.3 miles per hour
129 knots 148.451 miles per hour
130 knots 149.601 miles per hour
131 knots 150.752 miles per hour