SWOLF Score Calculator

How it is calculated

Enter the number of arm strokes you took over one pool length and the seconds that length took (decimals are fine for the time). The tool simply adds the two: SWOLF = strokes + seconds, and the result is rounded to a whole number. Lower is better, because the same length covered with fewer strokes or in less time scores lower. Zero or negative inputs return no result. The score only compares like with like: use the same pool length, the same stroke type and the same way of counting strokes each time, since a 25 m and a 50 m length give very different totals.

Common mistakes

• Entering the time and stroke count for a whole 200 m swim rather than a single pool length. The score is defined per length, so total strokes and total time would give a far larger number that cannot be compared with others.
• Comparing a 25 m score with a 50 m score. Longer lengths add more strokes and more seconds, so the totals are not comparable.
• Counting strokes differently from one session to the next, for example every hand entry one time and one arm only the next. This halves or doubles the stroke term and hides real progress.
• Trying to lower the score by swimming slowly with long glides. SWOLF adds seconds and strokes, so a very slow length can score worse even with few strokes.