All of the swim time conversions in SwimClub Manager use the "ASA Tables" method. An in depth explanation of how they are worked out can be seen here.
Enter the time in mm:ss.ms format, then select the distance, stroke, source pool size, target pool size and number of decimal places.
Click "Convert Time" to calculate the equivalent time. This tool is for conversion only; it does not add or update a member's swim times.