Shower Enclosure Size Calculator
Choosing a shower tray that is too large for the space can leave doors unable to open properly, while one that is too small wastes room you could otherwise use. Enter your available floor space below to get a recommended tray size and enclosure shape.
Find the right shower enclosure size
Enter your available floor space to get a recommended tray size and shape.
The largest standard shower tray that fits your space is:
900mm x 900mm
With those proportions, a quadrant enclosure shape is a good fit for your space.
Recommended products
A few well-reviewed shower enclosures at a range of sizes.
- Toughened Glass
- 900 x 900mm
£180.52
Pros
- 6mm toughened safety glass certified to BS EN 12150
- Smooth sliding doors on a 16-wheel roller system
- Square corner entry design suits tight bathroom corners
Cons
- Shower tray and waste sold separately
- Easy-Clean Glass
- 900 x 900mm
£208.95
Pros
- Matte black framed finish for a modern look
- 6mm easy-clean glass reduces limescale build-up
- Curved quadrant profile maximises floor space
Cons
- Some buyers report the frame feels lighter than premium alternatives
- Tempered Glass
- 900 x 800mm
£150.99
Pros
- 6mm tempered glass certified to BS EN 12150
- 16-wheel sliding system for smooth operation
- Chrome-finished stainless steel bar handle
Cons
- Shower tray not included
- A small number of buyers report leaks if not sealed carefully
Frequently asked questions
What are the standard shower tray sizes in the UK?
Common UK shower tray sizes are 700mm, 760mm, 800mm, 900mm, 1000mm and 1200mm, measured across the tray, with the larger sizes typically used for walk-in or wet room style showers.
When should I choose a quadrant enclosure over a rectangular one?
A quadrant enclosure suits a roughly square floor space and fits neatly into a corner with curved sliding doors, while a rectangular enclosure works better when one side of your available space is noticeably longer than the other.
Do I need to leave extra space around the shower tray for doors to open?
Yes, a hinged or pivot shower door needs room to swing open into the bathroom, so it is worth checking the door type as well as the tray size before finalising your choice.
Can I fit a bigger shower tray than my available space suggests?
It is best to stick to a tray size that fits within your measured space with a small margin, since a tray that is too tight against walls or fittings can make tiling and sealing much harder to get right.
How this calculator works
The calculator begins by asking for your available floor space, measured in square metres. We then utilise a standard shower screen depth of 75cm (0.75m) – this is a common measurement across many enclosures available on Amazon UK. The calculator multiplies your floor area by 0.75m to determine the minimum required width of the shower enclosure. Finally, it provides an estimated length based on a typical showering space requirement of 1.8m (180cm), which allows for comfortable movement and access. Remember this is a guideline – personal preference and bathroom layout will ultimately dictate your final choice.
Shower Screen Dimensions & Typical Shower Space Requirements (UK)
- **Small Showers (1.5m x 1.5m):** A shower screen width of approximately 75cm (0.75m) is generally suitable, paired with a depth of around 75cm. Consider a showering space of at least 1.8m long for comfortable movement.
- **Medium Showers (2m x 1.8m):** You’ll likely need a shower screen width of around 90cm to 1.2m, allowing ample space for turning and maneuvering. A length of 2.1m – 2.4m is recommended.
- **Large Showers (2.4m x 2.4m):** Opt for a wider shower screen, between 1.35m and 1.8m, alongside a depth of 75cm to 90cm. A showering space exceeding 2.7m in length is ideal.
- **Corner Showers:** Often require slightly smaller overall dimensions than straight enclosures due to the corner placement. Expect widths around 75-90cm for small corners and 90-120cm for larger ones.
- **Walk-In Showers:** These usually necessitate a significantly wider opening, often requiring a minimum width of 80cm – 1m or more to accommodate accessibility features and comfortable movement. Ensure adequate space around the door frame.
- **Consider Door Swing:** Factor in the swing radius of the shower door when calculating your available space. A standard pivot hinge typically has a swing radius of approximately 15-20cm.
Worked example: Optimising Space for a 1.8m x 1.8m Bathroom
Let’s say you have a bathroom measuring 1.8m by 1.8m (3.24 m²). Using the calculator, we multiply this area by 0.75m to determine the minimum shower screen width: 3.24m² * 0.75m = 2.43m. Rounding up to the nearest standard width of 2.5m or 2.75m would be a sensible choice, allowing for comfortable movement. You could then select a shower enclosure with a depth of 75cm (0.75m) – readily available on Amazon UK in various styles and materials.
A typical quadrant shower screen measuring 2.5m wide x 75cm deep would cost approximately £350 - £550 depending on the glass quality and finishing. This size provides adequate space for a single person to comfortably shower, whilst allowing enough room to turn around. Remember to double-check your bathroom’s ceiling height before purchasing an enclosure with a taller door – standard ceilings are typically 2.4m (2.4m), but some bathrooms may have lower ceilings requiring you to consider alternatives.
More questions answered
What if my bathroom isn't a perfect rectangle?
The calculator assumes a rectangular floor space, which is the most common. For irregular shapes, measure the longest side and use that for your calculations. You may need to adjust the enclosure size slightly to accommodate awkward angles.
Should I add extra space around the shower enclosure?
It’s highly recommended! Adding at least 30cm of clear floor space around the enclosure provides room to move, prevents splashing and allows for easy cleaning. Consider a non-slip mat as well.
What if my bathroom is very small?
Consider a shower screen with a narrower width (around 75cm) and a shallower depth (60cm or less). Alternatively, a corner shower might be more suitable to maximise the limited space.
How does the calculator account for door swings?
The calculator doesn't directly factor in door swing. You must consider this when measuring your available space – ensure sufficient clearance around the enclosure door for comfortable movement and operation.
What is a quadrant shower screen?
A quadrant shower screen has angled sides, creating a more spacious showering area compared to a standard rectangular screen of the same width. They are typically found on Amazon UK and available in various sizes.
Can I use this calculator for wetroom installations?
This calculator is primarily designed for traditional enclosures. Wetrooms require significantly larger enclosures and different installation considerations; consult with a specialist installer before making any decisions.
What units should I be using when measuring my bathroom?
Always measure in metres (m) for the most accurate results. Convert centimetres to metres by dividing by 100. This will ensure consistency across the calculator's formulas.
Does this calculator affect the price of the shower enclosure?
Not directly, but choosing a larger enclosure will naturally increase its price. The calculator helps you select the most appropriate size for your space and desired comfort level, which can influence your budget.
What if I want a walk-in shower?
Walk-in showers require significantly more space than traditional enclosures – typically 80cm - 1m wide or greater. Ensure you have adequate room around the door frame and consider accessibility features like grab rails.
Can this calculator help me choose between a screen and an enclosure?
The calculator focuses on width and depth, which are key factors in both shower screens and enclosures. Consider your budget and desired features (e.g., glass type) when making the final selection from Amazon UK’s extensive range.