As a working figure, one adult needs around 900mm to 1200mm of hanging rail plus shelving or drawers, and a couple sharing needs roughly 1800mm to 2400mm of rail between them. That translates to a single or double wardrobe for one person and a three or four door unit for two. The rail length is the number that matters, because it is the constraint you hit first.
Those figures are a starting point rather than a rule. Someone who wears tailoring daily needs considerably more rail than someone who lives in knitwear and jeans, since folded clothing takes shelf space instead. The sections below explain how to calculate your own requirement from what you actually own, which is far more reliable than a general guideline.
The quickest method takes ten minutes. Push everything currently hanging in your wardrobe together tightly, measure the length it occupies on the rail, then add around 20 per cent for air and future purchases. That figure is your genuine hanging requirement.
If you want to build it up from scratch instead, allow roughly 25mm of rail per garment on slim velvet hangers and around 40mm to 50mm on standard timber hangers. Coats and thick jackets need more, closer to 60mm each. Twenty shirts on slim hangers occupy around 500mm, while the same twenty on chunky timber hangers can take double that.
Hanger choice is the cheapest way to gain space. Mismatched hangers waste rail because the shoulders sit at different depths and refuse to nest, and switching to one consistent type commonly frees up a third of the rail without removing a single garment.
Some dimensions are fixed by the clothes themselves, and getting them wrong wastes the whole space.
Internal depth should be 570mm to 600mm so a hanger sits front to back without pressing on the door. In shallower spaces you can fit a front to back rail, but capacity drops significantly.
Short hanging, meaning shirts, blouses, folded trousers and jackets, needs around 1000mm to 1100mm of clear height. Long hanging for coats, dresses and full length garments needs 1500mm to 1600mm. Above any rail, allow at least 60mm to 80mm for the hanger hooks and your hand.
These figures explain why double hanging is so effective. A 2000mm tall wardrobe fitted with one long rail wastes several hundred millimetres of dead air beneath the shirts. Splitting that side into two short hanging sections doubles the rail in the same footprint.
Not everything should hang. Knitwear stretches on hangers, and jersey, sweatshirts and heavy jumpers all keep their shape better folded. As a guide, allow one shelf space of around 300mm height per stack of eight to ten folded jumpers, and keep shelves under 800mm wide or add a support so they do not bow.
Drawers handle small items far better than shelves do. Socks, underwear and accessories disappear on an open shelf and stay findable in a shallow drawer. If your wardrobe has no internal drawers, a separate unit is more efficient than trying to convert hanging space, and our modern chest of drawers UK sale options range from compact three drawer units to wider chests for shared rooms.
Shoes are the item most often forgotten. A pair of adult shoes takes roughly 300mm of shelf width, so ten pairs need around 1500mm of shelving in a single row, or less if stored in two rows on a deeper shelf.
For a single occupant in a standard UK bedroom, a two door wardrobe with one short and one long hanging section, plus two or three internal shelves, is usually sufficient. Our 2 door wardrobes UK sale selection is sized around exactly that use.
For a couple, aim for a three or four door unit and divide it clearly, ideally with each person having their own rail section. Shared rails become a source of friction because one person’s overflow silently takes the other’s space.
In a box room, and many UK second bedrooms are genuinely small, a full wardrobe may not be the right answer. A single wardrobe paired with under bed storage and a chest of drawers often provides more usable capacity than one large unit that blocks the walkway.
For a guest room, keep it modest. Around 600mm of clear rail, a shelf and a handful of spare hangers covers most visitors, and the remaining space is better given to the room itself.
Children’s requirements are different again. Short garments mean double hanging works from an early age, and drawers matter more than rail. Building in adjustable shelves pays off, because the layout that suits a six year old will not suit a teenager.
There are reliable indicators. Doors that will not close without pressure. Garments that crease simply from being stored. Piles of folded clothing living on a chair or on top of the wardrobe. Shoes gathering at the base of the hanging section. Seasonal items you cannot put away because there is nowhere to put them.
There is also a less obvious sign: a wardrobe with plenty of rail but no shelving. If everything has to hang, you will run out of rail while the vertical space above and below sits empty.
Before replacing anything, try the measures that cost little. Standardise hangers. Add a second rail under short hanging to create a double section. Fit a shelf in the dead space above the top shelf, which in a 2000mm unit is often 200mm of unused height. Move out of season clothing into breathable bags stored under the bed.
Reducing what you store is the other half of it. An honest edit of items unworn for a year usually recovers more space than any accessory. If overflow persists after that, the storage genuinely is undersized.
When you do move to a larger unit, prioritise internal layout over external size. A wide wardrobe with mixed hanging heights, drawers and adjustable shelves outperforms a taller unit with a single long rail every time. Our wardrobes UK sale range includes both hinged and sliding designs with planned interiors, and where a room cannot take extra depth in front of the doors the modern sliding wardrobes UK options avoid the swing space entirely. The complete bedroom collection is at Furniture in Fashion, with free delivery to most UK mainland postcodes.
Wardrobe space is only useful if the room still works. Leave around 700mm of clear walkway in front of a hinged wardrobe so a door can open fully and you can stand in front of it. Sliding doors need barely any clearance, which is why they suit narrow rooms.
Mark the footprint on the floor with masking tape before ordering. It takes two minutes and prevents the common mistake of a unit that technically fits the wall but leaves the room awkward to move through.
Around 900mm to 1200mm of rail suits most adults, alongside shelving or drawers for folded items. Measure your current clothes pushed together and add 20 per cent for a figure specific to you.
Usually not comfortably. Two adults are better served by 1800mm to 2400mm of rail, which normally means a three or four door unit, with each person given their own defined section.
Between 570mm and 600mm, so hangers sit front to back without pressing against the doors. Shallower units need a front to back rail, which reduces capacity noticeably.
Allow around 1000mm to 1100mm of clear height below the rail for shirts and jackets, and 1500mm to 1600mm for coats and long dresses. Leave at least 60mm above the rail for hanger hooks.
Standardise the hangers, add a second rail beneath short hanging, use the dead height above the top shelf, and rotate out of season clothing into storage bags. Those four steps commonly gain more than a size increase would.
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