Free Swimming Calculator
Swim Time Converter
Convert swimming times between SCY, SCM, and LCM courses — with yards to meters built in.
Enter your event and time to see equivalent swimming times across different course lengths.
Course
SCY = Short Course Yards · SCM = Short Course Meters · LCM = Long Course Meters
Gender (used by some conversion models)
Standard conversion method (Colorado factor set). Results are estimates — different organizations and models may produce different numbers.
Equivalent Time
59.80
100 Free · LCM
Converted from
52.43 100 Free · SCY
| Course | Equivalent Time |
|---|---|
| SCYShort Course Yards · 25 yardsSource | 52.43 |
| SCMShort Course Meters · 25 meters | 58.20 |
| LCMLong Course Meters · 50 meters | 59.80 |
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Open calculator →Course Converters
Jump straight to a specific pairing. Each converter covers every event and explains the factor and turn logic behind it.
SCY vs SCM vs LCM
The course (pool length) you swim in changes how the race plays out. Here is how the three standard competition courses compare.
| Course | Length | Common Usage |
|---|---|---|
| SCYShort Course Yards | 25 yards | U.S. high school, NCAA and club competition |
| SCMShort Course Meters | 25 meters | International short-course season |
| LCMLong Course Meters | 50 meters | Olympic Games, World Championships, majors |
How Does a Swim Time Converter Work?
SCY (Short Course Yards), SCM(Short Course Meters) and LCM (Long Course Meters) describe the pool the race is swum in. A 50-meter pool (LCM) is twice as long as a 25-meter pool, and a 25-yard pool is slightly shorter again — one yard is about 0.91 meters.
The reason a swimmer posts different times in each course is largely turns. In a 25-yard pool a 200 freestyle has more wall pushes than the same race in a 50-meter pool, so short-course swimming is typically a little faster. The difference grows with distance: a mile event has far more turns to gain from than a sprint.
A converter estimates an equivalent time by applying a course factor and a per-turn adjustment. This site uses the widely adopted Colorado factor set used across U.S. Masters Swimming and age-group programs.
Because the exact advantage of each extra turn varies from swimmer to swimmer, all course conversions are estimates. Different organizations publish different factor sets, so the numbers here may differ slightly from other calculators — that is expected.
How to Use This Converter
- 1Pick the course your time was swum in — SCY, SCM or LCM.
- 2Choose your event (for example 100 Free) and enter your time as
52.43or1:52.37. - 3Press Convert Time to see the equivalent time in every course, then copy or share the result.
Why Use the Swim Time Converter?
Looking for a swim time converter calculator you can trust? This free swim time converter turns any score from one pool into its fair equivalent on another — SCY, SCM or LCM — and it converts yards to meters and meters to yards right on the same page. Swimmers in the USA, the UK, Europe and Australia use it to compare results, seed races, set qualifying goals and check training paces, all without installing a thing.
Whatever you search for — "swim time converter", "swim time calculator", "swimswim swim time converter", or even "swim swim time converter" — you end up needing the same thing: an instant, accurate way to see what a time in one course means in another. That is exactly what this page does, in fewer than five seconds.
A swim time calculator for every event, from the 50 to the mile
The converter covers the full race slate — 50, 100, 200, 400/500, 800, 1000, 1500, the mile and the 1650 — plus the individual medleys: a swim time converter 100 IM, 200 IM or 400 IM works exactly like the freestyles. Swim a 100 IM in 1:02.30 short course yards, and the same effort comes back as a slightly different time in a short course meters pool and a different one again long course. Because the number of turns changes the race, the conversion is event-aware: sprint conversions shift less than the mile.
Want to know how your 100 IM or 200 free compares to a friend who trains in a different pool? Enter both times, or check the CSS and race projection tools for pace benchmarks.
Yards to meters — the swim time converter and its distance twin
Pool lengths get confusing quickly: swim time converter 25 yards to meters is 22.86 meters (that is a US short course pool), 50 yards to meters is 45.72 meters, and the 1650-yard mile is 1508.76 meters. On the flip side, aswim time converter meters to yards shows 25 meters = 27.34 yards and 1500 meters = 1640.42 yards. Many swimmers search for a "swim time converter 25 meters to yards" — that exact conversion, plus a dedicated lengths and distance converter, is built in here.
In the USA, high school, NCAA and Masters swimming almost all race in yards, while the rest of the swimming world — the UK, Europe and Olympic programs — races in meters. A single tool that handles both is why "swim time converter 25 yards to meters usa" and its meter-first cousin return here.
Short course to long course, in either direction
The short course to long course swim time converter is the heart of the site. A SCY to LCM swim time converter takes a 25-yard pool time and projects it to a 50-meter pool; SCM to LCM swaps 25-meter short course for long course; and every reverse pairing — LCM to SCY, LCM to SCM, SCM to SCY — is one click away. The method combines a documented course factor with a per-turn adjustment, the same approach used by US Masters Swimming.
Used this way, the tool doubles as a swim time difference calculator: set your time once and read the difference between your SCY, SCM and LCM equivalent side by side — no columns of printed conversion tables and no paper.
From the U.S. to the UK: one tool for every course
Course names differ, but the math is shared. U.S. swimmers get the yards speed they know from NCAA and age-group racing; a UK "swim time converter" audience trains in 25-meter pools in winter and 50-meter pools in summer, so SCM-to-LCM is second nature; and swimmers aiming at Swimming World and Olympic benchmarks think in long course. This converter speaks all three languages, so "swim time converter" search intent looks the same whether the traffic comes from the USA, the UK or anywhere else the swimming world races.
The best swim time converter tool — free, private, in your browser
Better than fumbling through columned tables from Swimswam or Swimming World, and lighter than the feature-heavy club apps, this works entirely in your browser: no accounts, no sign-ups, no data sent anywhere, and zero cost for unlimited conversions. Every result is clearly labelled as an estimate — the honest caveat of any course conversion — and historical factor sets used by federations are applied transparently.
Choose this as your every-meet swim time converter tool, bookmark it for the season, and pair it with the pace, split, interval and calorie calculators to plan a whole season from one place.