Master swimmers compete in 25 yard, 25 meters and 50 meter pools. It's possible to convert time for swims in one pool length to estimate the equivalent time in another pool length.
To make the conversion process easier, Mary V. DeMilia from RAM has created a calculator to convert meter to yard and vice versa for all 4 strokes. Click Go to Mary's calculator to do your own conversions.
Other Conversion Calculators can be found at:
Swimming World Magazine's site
or Speedo's calculator at Swim Swam website