Kitchen Wall Cabinet Sizes and Standard Dimensions Guide

Key takeaways

• Standard wall cabinet depths are usually around 300–320 mm, comfortably shallower than worktops so you do not bump your head while cooking.
• The typical gap between worktop and the underside of wall cabinets is about 450 mm, but it can be adjusted slightly for tall or petite users and to fit appliances like coffee machines.
• In many UK and European systems, wall cabinet widths follow a grid (for example 300, 400, 500, 600, 800 mm), which makes planning runs and aligning doors easier.
• Always leave extra clearance above hobs for safety and extractors; check your extractor and cabinet manufacturer instructions and consider using a ready-made unit such as a compact 60 cm wall cupboard where appropriate.
• For small or low-ceiling kitchens, using shorter wall units, open space above cabinets or slimmer depths can stop the room feeling cramped while still offering useful storage.

Standard kitchen wall cabinet sizes

Although every manufacturer has its own range, most modern UK and European kitchen systems are based on a set of fairly consistent module sizes. Understanding these common dimensions makes it much easier to design a layout that looks intentional and fits your room.

Typical wall cabinet heights

Wall cabinet height is one of the biggest visual drivers in a kitchen. The most common nominal heights you will see in UK and EU-style flat-pack or fitted kitchens include:

• Short units: around 360–450 mm high (often used above extractors, fridges or in rows above taller units).
• Standard units: around 570–720 mm high (the workhorse size in many kitchens).
• Tall wall units: around 900–1080 mm high (used to get closer to the ceiling or to match tall units visually).

Not every range offers every height, but most will have at least one mid-height option and one taller option. Shorter cabinets can be helpful over sinks or where a window interrupts the wall so you maintain light without giving up all your storage.

Typical wall cabinet widths

Widths are usually based on a planning grid so that doors and handles line up nicely. Common nominal widths (measured across the front of the cabinet) include:

• 150 mm spice or bottle units (more common as base units but sometimes available as wall cupboards).
• 300 mm – good for narrow gaps and larder-style shelves.
• 400 mm – a flexible single-door width.
• 500 mm – sometimes used to centre over sinks or hobs.
• 600 mm – very common, matches many appliance widths.
• 800 mm and 900 mm – usually double-door units for crockery and glasses.

As an example, a simple 600 mm white wall cabinet lines up neatly over a 600 mm base cabinet or hob and suits many layouts without complicated cutting or fillers.

Typical wall cabinet depths

Wall cabinet depth is where ergonomics really starts to matter. Most UK and European wall units are designed to sit shallower than worktops:

• Standard depth: around 300–320 mm (front of cabinet to wall).
• Shallow depth: around 200–250 mm for open shelving-style units or above busy work areas.
• Occasional deeper units: up to about 350 mm, often for pantry-style storage or when paired with deeper worktops.

This shallower depth ensures you can work comfortably at the counter without constantly knocking your head, while still allowing plates and everyday items to fit inside.

UK vs wider European size conventions

In practice, many UK kitchens now use cabinet systems similar to those found across continental Europe, but there are still some differences to be aware of when reading spec sheets or mixing components from different brands.

European-style systems typically use a very strict metric grid, often based on 150 mm or 300 mm steps, and focus on frameless carcasses with full-overlay doors. Traditional British-style framed kitchens may have externally similar door widths, but the internal carcass measurements can be different because of frames and thicker end panels.

When planning your layout, pay close attention to whether the dimensions quoted are for the carcass only or include doors and any decorative panels. For example, a manufacturer might list a cupboard as 600 mm wide, but the actual door could project a few extra millimetres beyond that. If you are pairing a ready-made cabinet, such as an 80 cm hanging cabinet, with existing units, double-check these measurements so the doors align cleanly.

Always compare like with like: carcass size, overall size including doors, and the clear internal space can all be slightly different, even when two cupboards are sold as the ‘same’ width.

Clearances above worktops and hobs

The distance between your worktop and the underside of wall cabinets or extractor hoods is critical both for comfort and safety. Too low and you will feel cramped; too high and you lose useful storage or extraction efficiency.

Standard clearance above worktops

A commonly used guideline for the vertical gap between worktop and the underside of wall cabinets is around 450 mm. This suits many average-height users and fits most small appliances comfortably beneath the cabinets.

You can tweak this by about 20–40 mm either way depending on your household:

• Taller users often prefer a slightly larger gap (for example 470–500 mm) so they do not feel as if they are working in a tunnel.
• Shorter users may like the cabinets a little lower (for example 420–440 mm) to keep the bottom shelves within easy reach.

If you plan under-cabinet lighting or bulky appliances like coffee machines, check the product heights and recommended clearances before fixing your final cabinet position. The article on wall cabinet installation heights and safety walks through measuring these gaps step by step.

Clearance above hobs and cookers

Above a hob, safety and manufacturer guidelines matter more than symmetry. Most extractor fans and hobs specify a minimum distance between the hob surface and any unit or hood above, and some distinguish between gas and electric cooking.

While you should always follow the specific instructions for the hob and hood you choose, it is common to see minimum clearance figures significantly larger than the normal 450 mm worktop gap. That means there will often be a visual ‘step up’ in height where the wall units either side of the hob begin.

To handle this neatly, many people use a shorter bridging cabinet or leave a clear space above the extractor rather than trying to run full-height cupboards directly over the hob. Ready-made 600 mm or 800 mm wide units can be useful either side of the cooker to maintain symmetry without violating safety clearances.

Aligning wall cabinets with base and tall units

Once you know your basic wall cabinet sizes, the next step is aligning them with your base units and any tall housings so the whole kitchen looks cohesive.

Horizontal alignment: widths and centring

Horizontally, you will generally want wall units to line up with the cabinets or appliances below them. For example, a 600 mm wall cabinet above a 600 mm base cabinet creates a neat visual column. Where you have a sink or hob centred in a longer run, you might use a pair of 300 mm wall cabinets either side, or a single 600 mm unit perfectly centred.

Corner units need special attention. In many modular systems, corner wall cabinets are designed with a fixed door width (for example 600 mm) and a return that disappears into the corner. You will then step out into the regular width grid along each wall. Planning on paper or using a basic planner tool can help avoid narrow, awkward filler pieces.

Vertical alignment: heights and lines

Vertically, you are balancing three main elements: the worktop level, the underside of the wall units, and the top line of wall units and tall housings. You might choose to:

• Run wall units up to the same height as tall housings, forming one consistent top line.
• Stop wall units lower and leave a gap above for display or lighting, while tall units continue higher.
• Use two stacked rows of shorter wall cabinets to reach the ceiling in a more flexible way.

The best option depends on your ceiling height and how modern or traditional you want the kitchen to feel. Full-height runs can look very sleek; a gap at the top reduces visual mass and is often seen in more classic schemes.

Planning around extractors, windows and corners

Few kitchens are made of simple, uninterrupted walls. Extractor fans, windows and room corners all have a big impact on how your chosen cabinet sizes play out in reality.

Extractor fans and canopies

For wall-mounted extractors, you will usually plan the hood first, then fit wall units around it. The hood width typically matches the hob below (for example 600 mm or 800 mm). You can choose to line wall units up exactly with the hood, or make them slightly narrower so the extractor stands proud as a design feature.

If you prefer a built-in or concealed extractor, some ranges offer special wall cabinets designed to house the unit while keeping the doors in line with the rest of the run. Where that is not available, you can use a standard cupboard of the right width and have your installer adapt the base and shelves to suit the extractor body and ducting.

Windows and wall reveals

Windows often sit above sinks, breaking up what could otherwise be a simple row of wall units. Your choices include:

• Stopping cabinets before the window and restarting them after, preserving the view and light.
• Using shorter units above the window to create a continuous top line around the room.
• Switching to open shelving across the window wall so the space feels lighter.

Do not forget about wall thickness and reveals: the distance from window frame to corner or adjacent wall. Measure carefully so that the cabinet doors can open fully without hitting the reveal or window handles. Shallow cabinets or a small open shelf near the window can sometimes use space that a full-depth cupboard cannot.

Internal and external corners

Internal corners (where two walls meet inside the room) are usually handled with either corner wall units or by leaving a clear corner space and starting straight runs on each wall. Corner cupboards can maximise storage but may have more complex mechanisms; straight runs with a gap are often visually lighter.

External corners, such as chimney breasts or boxed-in pipes, can be trickier. You may need to use a narrower cabinet width, finish a run earlier, or choose open shelves that can be trimmed on site. In some cases, a standalone cabinet like a 60 cm double-door unit or an 80 cm cupboard can be hung on the clearer section of wall, leaving the awkward area unused rather than forcing a compromised layout.

Under-cabinet lighting and clearance

Under-cabinet lighting is one of the most useful additions you can make to a kitchen, but it does slightly change how you think about cabinet height and depth.

Most lighting systems are fairly slim, but they still take up a little space beneath the cabinet. When calculating your worktop-to-cabinet gap, remember to include the thickness of any pelmets or light housings, not just the carcass. This keeps your clearance consistent and prevents taller appliances from clashing with lighting strips.

On deeper wall units, a small pelmet can help hide LED strips and prevent glare. On shallower units, choosing very Slimline lights or recessing them into the cabinet underside keeps everything tidy without drawing attention to the fittings themselves.

Choosing cabinet sizes for small or low-ceiling kitchens

In compact rooms or where ceilings feel low, standard wall cabinet dimensions can sometimes overwhelm the space. There are several ways to adapt your choices without sacrificing all your storage.

Using shorter or slimmer wall units

Shorter wall cabinets (for example around 360–450 mm high) can reduce the visual bulk on the wall, especially if you keep the same standard depth and simply reduce height. These are particularly effective over sinks or where a full-height run would meet a low ceiling awkwardly.

Alternatively, choosing shallower cabinets, or a mix of cupboards and open shelving, can keep sight-lines more open. A compact double-door cupboard around 600 mm wide and roughly 300 mm deep is often enough for everyday glasses and mugs without dominating the wall.

Taking cabinets up to the ceiling

Although it might sound counter-intuitive, running wall units right up to the ceiling can actually make a small kitchen feel taller by drawing the eye upwards and avoiding a dusty ledge. In this case, you would typically:

• Use taller wall units or stack two rows of shorter ones.
• Keep door styles simple and colours fairly light to avoid a heavy look.
• Reserve the highest shelves for rarely used items.

The key is ensuring that the bottom of the lowest cabinets remains at a comfortable height above the worktop. Do not reduce the working clearance simply to squeeze more cupboard in; it is better to add height above.

In a small or low-ceiling kitchen, prioritise comfort at the worktop first, then add as much storage as naturally fits above that line, rather than forcing standard heights that feel cramped.

Worked layout examples

Putting the numbers together is easier if you run through a few simplified layout examples. These are not rigid templates, but they show how common cabinet sizes combine in practice.

Example 1: Galley kitchen with a straight run

Imagine a straight wall around 3.0 m long with a 600 mm hob in the centre. A practical run of wall units might be:

• 300 mm wall cabinet – left of the hob.
• 600 mm gap for hood/extractor – centred over the hob.
• 300 mm wall cabinet – right of the hob.

Below, you might have matching 300 mm, 600 mm and 300 mm base cabinets, or a combination that suits sinks and drawers. Wall cabinet height could be 720 mm, hung so there is a 450 mm gap above the worktop, while the extractor above the hob sits higher to meet its safety clearance.

Example 2: L-shaped kitchen with a window

On the longer wall you might have a sink beneath a window. Wall units stop before the window, leaving that area open, then restart afterwards with a 600 mm cabinet followed by an 800 mm unit around the corner. On the shorter return wall, a 600 mm wall cabinet could sit neatly above a base oven housing, keeping a clear space in the corner if a full corner wall unit would clash with the window reveal.

To keep the room feeling open, you might choose shorter 570 mm high cabinets and leave a small gap between the cabinet tops and the ceiling. Under-cabinet lighting can then brighten the worktop zones that are further away from the window.

Example 3: Small kitchen with low ceiling

In a modest room with a lower ceiling, you might use 450 mm high wall cabinets mounted at the standard 450 mm worktop gap. Above these, a slim line of open shelves or smaller top boxes could take storage closer to the ceiling without closing in the space. Narrower widths, such as 400 mm and 500 mm units, can make it easier to centre cupboards on available wall sections between doors and windows.

Where you need extra flexibility, a self-contained cupboard like a 60 cm double-door cabinet or an 80 cm wall-mounted storage unit can be hung wherever the studs or fixings allow, rather than trying to force a full built-in run into an awkward wall.

Conclusion

Choosing the right kitchen wall cabinet sizes is less about following one fixed rule and more about balancing standard dimensions with how you live and cook. Once you know the typical heights, widths and depths available, you can combine them to create comfortable worktop clearances, safe hob spaces and clean alignments with base and tall units.

Whether you opt for a fully fitted system or mix in a few standalone pieces such as a simple 600 mm wall cupboard or a slightly wider 80 cm hanging cabinet, the principles remain the same: measure carefully, respect manufacturer clearances and prioritise everyday usability.

By planning with these standard dimensions in mind and adapting them sensibly for your room, you can design a kitchen that looks well-proportioned, feels comfortable to use and will stay practical for many years of daily cooking and entertaining.