CSS Calculator

Use this page to calculate your repeat times for the three endurance training categories based on your Critical Swimming Speed (CSS). "Yards" are used in the text here and for the workouts, but if your pool is meters, that works just as well.

Select your 400 time (mm:ss):	:
Select your 200 time (mm:ss):	:
Click to calculate:

For a description of the endurance training categories, see About Endurance Training Categories.

Return to Workout Index.