Both SCM (25-metre) and SCY (25-yard) pools have the same number of walls per race, but the pool lengths differ — 25 metres vs. roughly 22.86 metres (25 yards). This converter handles the subtle distance and unit conversion so you can accurately compare performances between the two short-course formats.
SCM to SCY Converter
25-metre pool to 25-yard pool
Formats: ss.hh, m:ss.hh, or h:mm:ss.hh
Advanced: Per-wall advantage (seconds)
Understanding SCM vs SCY
Both SCM and SCY are "short course" — meaning you get the same number of turns per race. The key difference is pool length: a 25-metre pool is about 9.4% longer than a 25-yard pool. That means each lap in metres covers more distance, and the total race in metres is proportionally longer.
SCM times are generally slightly slower than SCY times for the same nominal event. For example, a 100m SCM is 100 metres total while 100y SCY is only about 91.44 metres. This converter accounts for both the wall-advantage difference and the distance discrepancy.
Common Use Cases
- European swimmers heading to US colleges: Compare SCM (25m) competition results against NCAA SCY qualifying standards.
- Training in mixed pools: If your team trains in a 25m pool but competes in 25-yard meets, use this to set realistic target times.
- Performance tracking: Normalise your times to a single course type so progress can be tracked consistently across seasons.
How the SCM to SCY Conversion Works
- 1We determine the race distance in metres for your SCM event.
- 2We calculate wall counts for both the 25m and 25yd courses.
- 3We extract your free-water speed by removing SCM wall gains.
- 4We project that speed over the SCY distance and add SCY wall gains for the final time.
These are estimates, not official conversions. Use the sliders to personalise the wall-advantage model.