Turn your bathtub into a walk-in. Bathtub conversions are a great for people who have back or leg injuries, seniors or for anyone who has trouble stepping into a bathtub. Save money by turning your current bathtub into a walk-in. The bathtub conversion is done by cutting away a section (usually the center) and putting it back together like it was made that way. Bathtub conversions can be installed in any fiberglass or acrylic bathtub.