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 688 knots into miles per hour we have to multiply 688 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

688 kt → V_(mph)

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

V_(mph) = 688 kt × 1.1507794480225 mph

V_(mph) = 791.73626023951 mph

The final result is:

688 kt → 791.73626023951 mph

We conclude that 688 knots is equivalent to 791.73626023951 miles per hour:

688 knots = 791.73626023951 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 0.0012630468632288 × 688 knots.

Another way is saying that 688 knots is equal to 1 ÷ 0.0012630468632288 miles per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred eighty-eight knots is approximately seven hundred ninety-one point seven three six miles per hour:

688 kt ≅ 791.736 mph

An alternative is also that one mile per hour is approximately zero point zero zero one times six hundred eighty-eight 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