The width of a washer and dryer together can vary depending on the specific models and configurations you choose. However, most standard-size washers and dryers are designed to fit side by side and typically have a combined width of around 54 to 60 inches (137 to 152 centimeters). This allows for each appliance to have an approximate width of 27 to 30 inches (69 to 76 centimeters). It's worth noting that compact or stackable washer and dryer units are available, which have smaller dimensions and can save space.