## Conversion formula

The conversion factor from knots to meters per second is 0.514444444444, which means that 1 knot is equal to 0.514444444444 meters per second:

1 kt = 0.514444444444 m/s

To convert 640 knots into meters per second we have to multiply 640 by the conversion factor in order to get the velocity amount from knots to meters per second. We can also form a simple proportion to calculate the result:

1 kt → 0.514444444444 m/s

640 kt → V(m/s)

Solve the above proportion to obtain the velocity V in meters per second:

V(m/s) = 640 kt × 0.514444444444 m/s

V(m/s) = 329.24444444416 m/s

The final result is:

640 kt → 329.24444444416 m/s

We conclude that 640 knots is equivalent to 329.24444444416 meters per second:

640 knots = 329.24444444416 meters per second

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 meter per second is equal to 0.0030372570194411 × 640 knots.

Another way is saying that 640 knots is equal to 1 ÷ 0.0030372570194411 meters per second.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred forty knots is approximately three hundred twenty-nine point two four four meters per second:

640 kt ≅ 329.244 m/s

An alternative is also that one meter per second is approximately zero point zero zero three times six hundred forty knots.

## Conversion table

### knots to meters per second chart

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

knots (kt) meters per second (m/s)
641 knots 329.759 meters per second
642 knots 330.273 meters per second
643 knots 330.788 meters per second
644 knots 331.302 meters per second
645 knots 331.817 meters per second
646 knots 332.331 meters per second
647 knots 332.846 meters per second
648 knots 333.36 meters per second
649 knots 333.874 meters per second
650 knots 334.389 meters per second