Calculate the pace you need to maintain to cover a distance swimming in a certain amount of time.
This calculator will give you the pace you need to keep in metres per second and metres per minute.

example

distance of swim = 0.750 kilometres
time 11 minutes

0.750 * 1000 ÷ 11 = 68.18
to cover 0.750 kilometres you need to swim 1.136 metres per second. 
68.18 metres per minute

The Calculation

1. distance of your swim in kilometres
2. the time to swim this distance

Results:

1. swimming pace in metres per second
2. metres per minute