What Size Wardrobe Doors Do I Need? UK Guide

A wardrobe can look perfectly planned on paper, then disappoint because the door opening was measured from one convenient point rather than the tightest one. If you are asking, what size wardrobe doors do I need, the answer starts with the finished opening - not the size of the old doors, not the wall-to-wall distance, and not an estimate rounded to the nearest centimetre.

For a made-to-measure sliding wardrobe, your door dimensions are calculated from the width and height of the opening, the track system and the number of doors you choose. Get those details right and the doors will overlap correctly, run smoothly and give the fitted look you are paying for.

What Size Wardrobe Doors Do I Need for a Sliding Wardrobe?

Sliding wardrobe doors are made slightly wider than an equal division of the opening. This is deliberate. Each door needs to overlap the next so there is no visible gap when the wardrobe is closed. The amount of overlap varies by system, which is why simply dividing the opening width by two, three or four does not produce the finished door size.

The door height also depends on the tracks. Top and bottom tracks take up space within the opening, while the running gear needs a controlled amount of clearance for adjustment and smooth movement. A made-to-measure supplier will calculate the final panel size from the opening dimensions and the selected system.

Your job is to provide accurate measurements of the space. Avoid ordering doors to the exact dimensions of an existing panel unless you know that the tracks, frame profiles and running system will all remain unchanged. Even a small difference between systems can affect the required size.

Measure the finished opening, not the room

Measure the aperture where the tracks and doors will sit after any flooring, plastering, skirting alterations or lining work is complete. If carpet is being replaced with laminate, engineered wood or a new carpet, decide which finished floor level the wardrobe will be measured from before ordering.

Take the width at the top, middle and bottom of the opening. Then take the height on the left, in the centre and on the right. Record every measurement in millimetres and use the smallest width and smallest height when the opening is not perfectly square. This prevents a door or track being made too large for the tightest point.

Measure from solid, finished surfaces. Do not measure to a loose carpet pile, temporary batten or an uneven edge that will be removed during installation. Where a wall is significantly out of plumb, it may need packing, a lining panel or site preparation before fitting. Bespoke doors can accommodate many layouts, but they cannot correct a badly prepared opening on their own.

Choose the Right Number of Wardrobe Doors

The number of sliding doors is as much a practical choice as a design decision. Wider openings can be divided into two, three, four or five panels, depending on the range and the look you want. More doors create narrower panels and more overlap points; fewer doors create wider panels with a cleaner, more expansive appearance.

For a compact wardrobe, two doors are often the most straightforward option. They provide a balanced layout and a broad access area when one panel is slid aside. In a wider alcove or full-width bedroom wall, three or four doors usually give better access to separate sections of hanging and shelving.

Door weight matters too. A full-height panel with mirror, glass or several decorative inserts may be heavier than a simple board panel. Quality sliding systems are designed to carry substantial doors, but every range has its own maximum widths, heights and weight limits. Choosing the number of panels should therefore be based on the opening, the chosen finish and the hardware specification - not appearance alone.

A useful way to think about access is to consider what you need to reach at the same time. Sliding doors never expose the entire wardrobe opening at once. With two doors, roughly half the opening is accessible at any one time. With three or four doors, you can position panels to reveal different zones, which is particularly useful where the interior includes drawers, double hanging and long-hang sections.

Match the doors to the interior layout

Plan the interior before finalising the door arrangement. A central drawer stack, for example, is easier to use when the doors can slide clear of it. If you are creating his-and-hers storage, separate door positions can help each person access their own section without moving a large panel across the whole wardrobe.

Also allow adequate internal depth. Sliding door tracks and door frames sit in front of the wardrobe interior, so a shallow carcass can leave too little room for coat hangers or bulky clothing. For standard front-facing hanging, you will usually need a deeper interior than for shelves alone. Measure the available depth from the back wall to the front edge of the finished wardrobe, then allow for the door system before planning rails and drawers.

Check Height, Headroom and Track Position

A tall opening can create a striking fitted wardrobe, but ceiling height is not the only measurement that counts. You must be able to manoeuvre the doors into position during installation. Depending on the system, this may require lifting the door into the top track and lowering it onto the bottom track, so restricted headroom above the opening can affect fitting.

Consider any coving, ceiling slope, boxed-in pipework, loft hatch, light fitting or bulkhead before ordering. A sloping ceiling does not automatically rule out a sliding wardrobe, but it may require a square, framed opening beneath the slope rather than doors following the angle.

The tracks need a level, secure fixing surface. If the floor falls across the opening, the bottom track may need packing and careful levelling. If the ceiling is uneven, a top lining or infill can provide a straight fixing line. These details are often the difference between doors that glide quietly and doors that drift, rub or fail to meet neatly.

Do not overlook skirting boards and side returns

A wardrobe fitted between two walls needs a clear, usable opening. Skirting boards, picture rails and uneven plaster can obstruct tracks or prevent side panels from sitting flush. Some installations need the skirting removed within the wardrobe area; others use end panels, fillers or a purpose-built frame to bring the opening forward.

If your wardrobe runs along one wall rather than between two returns, establish where the doors will finish at each end. You may need matching side panels to conceal the interior and provide a neat edge. This affects the overall wardrobe design, although the doors themselves are still sized to the finished track opening.

Sliding Doors Versus Hinged Doors

If you are considering hinged doors instead, measure the carcass or opening width and divide it into practical door widths, allowing for hinges and small operating gaps. Hinged doors do not require sliding-door overlap, but they do need clear floor space in front to open fully.

That is the key trade-off. Sliding wardrobe doors are particularly effective in bedrooms where a bed, bedside tables or a narrow walkway sit close to the wardrobe. They keep the circulation space clear while giving a clean, built-in finish. Hinged doors can provide full-width access to the interior, but their swing needs to be planned around the room.

For most fitted bedroom projects, sliding doors are selected for their space-saving benefit and flexibility across wide openings. The final sizes should always be calculated for the specific door range and track system rather than copied from a general chart.

A Measurement Checklist Before You Order

Before submitting your dimensions, make sure you have confirmed the finished opening width at three points, the finished height at three points, the floor finish, and the location of any skirting, coving or obstructions. You should also know whether the opening is level and square, how many doors you want, and where the interior sections will sit.

Photographs of the opening can be useful when discussing an unusual layout, particularly for alcoves, sloping ceilings and rooms with pipe boxing. Ordering samples beforehand is equally worthwhile when choosing mirrored, coloured glass, wood-effect or panelled finishes. The right finish should work with the bedroom light as well as the rest of the furniture.

DoorsDirect can help turn accurate opening measurements into a made-to-measure door specification, with guidance on suitable configurations, finishes and wardrobe interiors. That support is valuable when your space is outside the standard rectangular opening or when you want confidence before committing to bespoke manufacture.

A well-sized wardrobe door should disappear into the room in the best possible way: aligned, quiet in use and proportioned to the space around it. Take the measurements carefully, plan the access you need, and let the chosen sliding system determine the final door calculation.