Your Guide to Shower Base Sizes
Find the perfect shower base for your project. Learn about standard sizes, shapes, and what to consider before you buy.
A shower base (also called a shower pan or receptor) is the floor of your shower. It collects and channels water to the drain. Choosing the right size ensures a proper fit, efficient drainage, and a comfortable showering experience. Whether you're building new or replacing an old tub, understanding standard sizes will help you make the right choice.
Key Terminology
Shower Base / Pan
The waterproof floor unit that sits at the bottom of your shower, channeling water to the drain.
Shower Receptor
Another term for shower base, often used in commercial or accessibility contexts.
Threshold
The raised edge at the shower entry that contains water. Height varies from low-profile (1") to standard (4-5").
Standard Sizes Overview
The most common shower base dimensions you'll encounter
32" x 32"
Compact
Ideal for small bathrooms, powder rooms, and corner installations.
36" x 36"
Standard
The most popular size. Fits standard bathroom layouts with room to move.
36" x 60"
Spacious
Tub-replacement size. Perfect for converting a bathtub space to a walk-in shower.
Shower Base Shapes & Sizes
Different shapes for different spaces
Square
Great for corner and compact installations.
Rectangular
Most versatile shape, fits standard alcove openings and tub replacements.
Neo-Angle
Diamond-shaped for corner installations that save space.
Additional Measurements to Consider
Beyond length and width, these factors matter
Threshold Height
Standard thresholds are 4-5 inches. Low-profile thresholds (1-2 inches) improve accessibility.
Drain Position
Center drain or offset drain — check your existing plumbing to match drain location.
ADA Compliance
ADA-compliant bases feature low thresholds, non-slip surfaces, and adequate turning radius.
How to Choose the Right Size
Follow these four steps
Measure Your Space
Measure width, depth, and height of your shower area. Account for walls, doors, and fixtures.
Consider Your Needs
Think about accessibility, user preferences, and whether you're replacing a tub.
Check Plumbing
Locate your drain position and water supply lines. Match the base drain to your existing plumbing.
Plan Installation
Determine if you need a base, walls, door, and accessories. Consider professional installation.