Have you ever wondered what the difference is between a 25 yard pool and a 25 meter pool?
The 25 yard pool is 75 feet in length.
The 25 meter pool is 82 feet in length.
That is approximately 10% so if you want to convert a time from:
Yards to Meters multiply by 1.1
30.00 sec X 1.1 = 33.00 seconds
Meters to Yards divide by 1.1
30.00 sec / 1.1 = 27.00 seconds