Navigate to an online conversion tool to perform the conversion automatically. Enter the desired meters per second value into the corresponding box. It will then be automatically converted to knots. Some converters required the user to press the "Convert" button. For example, if a boat is traveling at 50 m/s, enter 50 into the box corresponding to meters per second. The calculator will automatically generate 97.19 knots.
Calculate the conversion by hand. Multiply the meters per second value by 1.9438. This is the approximate value in knots for one meter per second. However, this value is approximate, since more decimals should be used for a more exact conversion. For example, if a boat is traveling at 250 m/s, multiply 250 by 1.9438 to yield an approximate 485.95 knots. Alternately, multiply the number of knots by 0.514444 to obtain the number of meters per second. For example, multiply 100 knots by .514444 to yield a result of 51.44 meters per second.
Use the fact that 1 meter per second equals 1.94384449244 knots to provide a more exact conversion. Use as many decimals as possible when multiplying the number you wish to convert by the value above in order to obtain a result that is as close to reality as possible. For example, if a boat is traveling at 250 m/s, multiply 250 by 1.94384449244 to yield 485.961 knots. Notice that this value is slightly different from the value in step 2. Depending on the accuracy required for the calculation, either method can be used.