Swim Time Converter & Time Conversion Calculator Swimming

Convert swimming times between Short Course Yards (SCY), Short Course Meters (SCM), and Long Course Meters (LCM) — the free swim time converter built for competitive swimmers, coaches, and parents.

⚡ Instant🏊 SCY · SCM · LCM📋 All Strokes & Events📊 Conversion Factors✦ 100% Free

🏊

Swim Time Converter — SCY / SCM / LCM

Your SCY Time

Converted Result

Result appears here

All three course equivalents

SCY—

SCM—

LCM—

📊

Conversion Factors Used in This Swim Time Converter

🔵SCY → SCM

× 1.11

Short course yards to short course meters. Same pool turn advantage, adjusted for 1 yard ≈ 0.9144 m.

🟢SCY → LCM

× 1.133

Short course yards to long course meters. Accounts for ~8 fewer turns and greater distance per length.

🟠SCM → LCM

× 1.023

Short course meters to long course meters. Both pools are metric; difference is only turn count (16 vs 8 in 200m).

🔵SCM → SCY

÷ 1.11

Reverse of SCY→SCM. Useful when you have a metric short-course result and need a US yards equivalent.

🟢LCM → SCY

÷ 1.133

Long course meters to short course yards. Converts your summer time back to the US high-school or club season.

🟠LCM → SCM

÷ 1.023

Long course meters to short course meters. Used for European domestic season comparisons.

These are the standard USA Swimming / FINA conversion factors. Individual event results may vary slightly due to stroke-specific turn advantages (e.g., breaststroke gains less from turns than freestyle).

📋

Swimming Time Conversion Reference Chart

Event	SCY Example	→ SCM	→ LCM

📖

Swimming Time Conversion Guide

Why Swim Times Differ Between Courses

A swimming pool is not a swimming pool. The two key variables that make times incomparable across courses arepool lengthandnumber of turns. Underwater dolphin kicks off the wall are the fastest phase of most swims — shorter pools mean more turns, and therefore faster times for the same fitness level.

Short Course Yards (SCY)

The standard competitive pool in the United States is 25 yards long. Most high school, college (NCAA), and USA Swimming club meets are conducted in SCY. A 200 freestyle in a 25-yard pool requires7 turns.

Short Course Meters (SCM)

Much of Europe and international age-group competition uses 25-meter pools. Distances are the same as LCM but the extra turns produce times roughly2–3% fasterthan long course. The World Short Course Championships are held in SCM.

Long Course Meters (LCM)

The Olympic standard — a 50-meter pool. A 200 freestyle requires only3 turns, so underwater time is minimized and aerobic capacity matters more. LCM is considered the "true" measure of a swimmer's ability.

How the Conversion Factors Work

USA Swimming and World Aquatics (formerly FINA) use time-based conversion factors derived from statistical analysis of thousands of elite performances across all three courses. The factors areaverages— a 1:45 SCY 200 free does not guarantee exactly a 1:58 LCM time for every swimmer.

When to Use the Swim Time Converter

Comparing a club record set in SCY against an international standard in LCM
Checking whether your time qualifies for an open-water or Olympic-distance event
Estimating your expected performance when traveling to a different pool type
Recruiting — college coaches convert SCY high-school times to LCM equivalents
Setting training pace targets across different pool formats

Stroke-Specific Notes

Breaststroke benefits the least from turns (the breaststroke pullout is fast but not as fast as freestyle dolphin kicks). Backstroke and butterfly swimmers gain moderately. Freestyle swimmers — especially specialists with powerful dolphin kicks — show the largest short-to-long conversion gaps. IM falls somewhere in between, depending on the swimmer's strongest stroke.

❓

Swim Time Conversion FAQ

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

SCY (Short Course Yards) uses a 25-yard pool — standard in US high school and college swimming. SCM (Short Course Meters) uses a 25-meter pool — common in European and international club competition. LCM (Long Course Meters) uses a 50-meter Olympic pool. Times get progressively slower as pool length increases due to fewer turns.

How do you convert SCY to LCM swim times?

Multiply the SCY time in seconds by1.133to get the LCM equivalent. For example, a 50.00 SCY 100 free × 1.133 = 56.65 LCM. Our swim time converter does this automatically — just enter your time and select SCY as the source course.

Why is the long course time slower than short course?

In shorter pools you have more turns, and the underwater dolphin-kick phase after each turn is typically the fastest part of a swim. A 200m freestyle in a 25-yard pool has 7 turns vs just 3 in a 50-meter pool. Fewer turns mean less free speed, so long course times are naturally slower even for equally fit swimmers.

Are the conversion factors accurate for all events?

The factors are statistical averages derived from large populations of elite performances. They work well as estimates but are not exact for every individual or event. Breaststroke conversions tend to be slightly less accurate because the breaststroke underwater pullout differs significantly from freestyle or butterfly dolphin kicks.

What conversion factor does USA Swimming use?

USA Swimming uses1.11for SCY→SCM and1.133for SCY→LCM. These factors are published in their officiating and time standards documentation and are the industry standard used by coaches, recruiters, and meet directors worldwide.

Can I use this swim time converter for qualifying times?

This tool uses standard conversion factors for estimation. For official meet qualification purposes, always verify with the meet director or the governing body (USA Swimming, World Aquatics, etc.) as some meets require times to be achieved in a specific course and may not accept converted equivalents.

How do I enter a time like 1:45.23 in the converter?

Enter1in the minutes field,45in the seconds field, and23in the hundredths field. For times under one minute (e.g. 54.38), leave minutes blank and enter54seconds and38hundredths.