SWOLF Score Calculator

SWOLF Score Calculator

SWOLF is the simplest single number for swimming efficiency: add the strokes you take for one length to the seconds it takes you to swim it. Enter both plus your pool length and this calculator returns your SWOLF score and an equivalent per-25 m value so you can compare pools. Use it to track technique gains, because a falling SWOLF at the same pace means you are getting more distance from every stroke.

SWOLF (Swim Golf) adds your stroke count and your time in seconds for one pool length. Like golf, lower is better: you can lower SWOLF by swimming faster or by taking fewer, more efficient strokes. Because it combines both, it rewards true efficiency rather than just thrashing harder. Compare SWOLF at the same speed and pool length, and use the per-25 m value to compare 25 m and 50 m pools.