Long-Course to Short-Course Conversion Table
Men and Women
* 25m Short-Course time, add constant to obtain 50m Long-Course Time.
* 50m Long-Course time, subtract constant to obtain 25m Short Course Time.
EVENTS
CONSTANT (SECONDS)
15 & Over
14 & Under
Freestyle
50m
0.5
0.3
100m
0.9
0.7
200m
1.9
1.5
400m
3.8
3.1
800m
11.3
6.5
1500m
20.0
12.0
Backstroke
50m
0.7
0.5
100m
1.5
1.1
200m
3.0
2.4
Breaststroke
50m
0.6
0.4
100m
1.5
1.0
200m
3.5
2.2
Butterfly
50m
0.6
0.4
100m
1.3
1.0
200m
3.3
2.0
Individual Medley
200m
3.6
2.5
400m
8.1
5.5
Courtesy of Australia's WWW Swimming site - and Cairn's Master Muddies
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