Swimming Time Calculator

Convert swim times between Short Course Yards (SCY), Short Course Meters (SCM), and Long Course Meters (LCM) using Colorado Timing conversion factors. Compare your yard-pool time to what you might swim in a 50-meter Olympic pool.

Why Pool Course Matters

SCY pools are 25 yards, SCM pools are 25 meters, and LCM pools are 50 meters. Fewer turns in long course mean slower times for the same effort because swimmers get less push-off speed from walls. Conversion factors account for both distance differences and turn adjustments.

Example Conversion

A 100-yard backstroke time of 55.42 seconds in SCY converts to about 62.72 seconds in LCM using a 1.11 multiplier plus a 1.2 second turn adjustment. Use the Swimming Calorie Calculator to estimate energy expenditure for your converted workout.

Frequently Asked Questions

What is the difference between SCY, SCM, and LCM?

SCY is a 25-yard pool common in US high school and college swimming. SCM is a 25-meter pool used in international short course events. LCM is a 50-meter Olympic-size pool.

Are converted swim times official?

Converted times are estimates for comparison and goal setting. Meet entries and qualifying standards require an actual swim in the target course.

Why is my LCM time slower than my SCY time?

Long course pools have half as many turns, so you get fewer push-offs and streamlines. The conversion adds time to account for this difference.

Do different strokes use different conversion factors?

Yes. Each stroke and distance has its own turn adjustment. A 100 backstroke and a 500 freestyle use different multipliers and time additions.

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Swimming Time Calculator