Office Desk Size Guide: How to Choose the Right Desk for Your Workspace

Choosing an office desk can look straightforward until you start measuring the room. A desk that appears suitable online may feel too small once you add a monitor, keyboard and paperwork—or too large once the chair, drawers and surrounding walkways are taken into account.

The right office desk should give you enough usable surface area without making the room feel crowded. It should also suit the way you work, whether that involves a laptop, multiple monitors, regular paperwork, customer meetings or a combination of different tasks.

This office desk size guide explains common desk dimensions, how much space to allow around the desk and what to consider before choosing a straight, executive or L-shaped desk.

Why Office Desk Size Matters

Desk size affects more than how much equipment fits on the desktop. It also influences posture, monitor placement, storage access and how easily you can move around the workspace.

A desk that is too narrow may force the monitor too close to the user. A shallow desktop can leave little room for the keyboard and forearms, while an oversized desk can reduce the available space behind the chair or block a doorway.

Before comparing desk styles, consider these four areas:

• The equipment and supplies used each day
• The amount of clear floor space available
• The size and adjustment range of the office chair
• Whether the desk will be used by one person or shared between several users

There is no single desk size that suits every office. A compact home office and a full-time executive workspace will naturally have different requirements.

Common Office Desk Sizes

Office desks are available in many dimensions, but widths between 120cm and 180cm are commonly used for individual workstations. The best choice depends on the number of screens, the type of work being completed and how much free desktop space you prefer.

These measurements are a starting point rather than a strict rule. Two desks with the same width may provide very different amounts of usable space depending on their depth, storage configuration and leg design.

Is a 120cm Desk Large Enough?

A 120cm desk can work well for a laptop, a compact monitor and a few everyday accessories. It is a practical option for apartments, bedrooms and small home offices where floor space is limited.

However, it may become crowded if you use two monitors, keep large files on the desktop or need space for face-to-face discussions. Measure your equipment rather than judging the desk by width alone.

What Desk Size Is Suitable for Two Monitors?

For many dual-monitor arrangements, a desk around 160cm wide provides a more comfortable setup. The exact requirement depends on the monitor sizes and whether they are placed on stands or mounted on monitor arms.

Monitor arms can free up desktop space, but the desk still needs a suitable depth and a strong edge or mounting area. Always check the monitor arm and desktop specifications before installation.

How Deep Should an Office Desk Be?

Desk depth is often overlooked, yet it plays a major role in everyday comfort. A deeper surface makes it easier to position a monitor at a comfortable viewing distance while leaving room for the keyboard, mouse and forearms.

A 60cm-deep desk may be suitable for laptop work, compact rooms or occasional use. For a full-time workstation with a desktop monitor, a depth closer to 70–80cm generally provides more flexibility.

WorkSafe Queensland notes that a desk depth of approximately 800mm can help provide appropriate monitor positioning and comfortable leg room. It also recommends keeping the keyboard and mouse on the same level, with the keyboard positioned approximately 10–15cm from the front edge so the forearms can be supported.

If you use a large monitor, two screens or a desktop computer, do not choose a shallow desk simply because it fits the room. The equipment may technically fit while still leaving an uncomfortable working distance.

What Is the Right Office Desk Height?

Desk height should be considered together with the office chair and the user’s body proportions. When seated, the shoulders should remain relaxed and the forearms should be comfortably supported while using the keyboard and mouse.

As general workplace guidance, WorkSafe Queensland recommends a height of approximately 680–720mm for a fixed sitting desk. Actual commercial desk heights vary, so it is important to check the measurements listed on the individual product page rather than assuming every desk has the same height.

If a desk is higher than your preferred working position, raising the chair may help align the elbows with the desktop. If this prevents the feet from resting comfortably on the floor, a stable footrest may be required. However, the chair, armrests and underside of the desk must still have enough clearance.

For workstations used by different people, a height-adjustable desk may provide greater flexibility than a fixed-height model.

Straight Desk vs L-Shaped Desk

The shape of the desk can be just as important as its dimensions. Straight and L-shaped desks suit different rooms and working styles.

Straight Office Desks

A straight desk is easy to position against a wall, in the centre of an office or alongside other staff workstations. Its simple footprint makes it a practical option for smaller rooms and flexible office layouts.

A straight desk may be the better choice when:

• You primarily use a laptop or one monitor
• The office is narrow or compact
• You want to arrange several desks in a row
• You may need to reposition the furniture later
• You prefer a simple, uncluttered workstation

L-Shaped Office Desks

An L-shaped desk creates two connected work surfaces. One side can hold the computer, while the other can be used for documents, meetings, creative work or storage.

This layout can be useful for managers, designers, accountants and anyone who regularly switches between computer work and paperwork. It also makes efficient use of a suitable corner.

Before ordering an L-shaped desk, confirm:

• The total width and depth of both sections
• Whether the return section is positioned on the left or right
• Whether the left/right direction is described from the user’s seated position or from the front of the desk
• Whether drawers and cabinet doors can open fully
• Whether the desk will block windows, doors, power points or walkways

Product images alone are not always enough to determine orientation. Check the dimension diagram and contact the retailer before ordering if the left- or right-hand configuration is unclear.

How Much Space Should You Leave Around a Desk?

The desk dimensions only describe the furniture itself. You also need room for the office chair, storage doors and normal movement around the workspace.

As a practical starting point, allow enough space behind the chair for the user to sit down, stand up and move away from the desk without hitting a wall or cabinet. More room will be needed if the area behind the chair is also a shared walkway.

When measuring the room, include:

• The office chair at its widest point, including the armrests and base
• The space required to pull the chair away from the desk
• The opening path of drawers, cabinet doors and room doors
• Access to power points and data connections
• Skirting boards, columns and other architectural features
• Any nearby sofa, meeting table or visitor chair

Use masking tape to mark the proposed desk footprint on the floor. Then place your existing chair inside the outline and test how easily you can move around it. This simple step gives a more realistic impression than looking at measurements on a screen.

Choosing a Desk for Different Workspaces

Home Office

For a home office, choose a desk that supports your normal working routine without dominating the room. A 120–140cm straight desk may be sufficient for laptop or single-monitor work, while a larger desk may be worthwhile for full-time work or a dual-monitor setup.

Remember to account for household doors, wardrobes and shared walkways. A desk that fits between two walls may still be inconvenient if the chair blocks the room entrance.

Staff Workstation

A staff desk should provide enough room for the equipment required by the role, not simply the smallest possible footprint. Consider monitors, telephones, document trays and any items that need to remain within easy reach.

For multiple workstations, consistent desk sizes can make the office look more organised. However, adequate space should still be maintained between employees and along shared access routes.

Executive Office

An executive desk is often larger and may include a side return, storage cabinet or modesty panel. A width of 160–180cm or more can provide a spacious working area, but the room must be large enough to keep the overall layout balanced.

If visitors will sit opposite the desk, include the visitor chairs in your floor plan. Make sure there is enough distance for both the desk user and guests to sit comfortably without obstructing the main walkway.

Shared or Flexible Office

Desks used by several employees should accommodate a reasonable range of users. Adjustable chairs are especially important, and height-adjustable desks may be worth considering in hot-desking environments.

Cable access, monitor positioning and personal storage also become more important when the workstation changes users regularly.

Storage and Cable Management

A large desktop does not automatically create an organised workspace. Storage and cable management can have a greater effect on everyday usability than a small increase in desk width.

Consider whether you need:

• A lockable drawer for personal items or documents
• A filing cabinet for folders and paperwork
• Open shelving for frequently used supplies
• A full-height or low-profile modesty panel
• Cable openings for monitors and charging equipment
• A built-in power outlet or cable management box
• A side cabinet that can be positioned on the left or right

Storage should be accessible without restricting leg room. Check the internal knee space, particularly on desks with fixed drawer units or deep modesty panels.

Measure Delivery Access Before Ordering

Measuring the office is only part of the process. Large office furniture must also pass through every entrance between the delivery vehicle and its final position.

Before ordering, measure:

• The main building entrance
• Internal doors and hallways
• Staircases and landings
• Lift doors and the internal lift space
• Tight corners along the delivery route

Check whether the desk arrives fully assembled, partially assembled or flat-packed. Flat-pack desks are generally easier to move through narrow access points, while larger assembled sections may require considerably more clearance.

Also review the product’s total delivery time and installation requirements before scheduling an office opening, renovation or staff relocation.

Office Desk Measuring Checklist

Before choosing a size, work through this checklist:

• Measure the room’s usable length and width
• Mark the proposed desk footprint on the floor
• Check the desk width, depth and height separately
• Measure your monitor, keyboard and other equipment
• Allow room behind the office chair
• Check drawer, cabinet and door opening directions
• Confirm the orientation of an L-shaped desk
• Locate power points and data connections
• Measure doors, lifts, staircases and hallways
• Confirm whether assembly is required

Taking a few extra measurements before purchasing can prevent many of the most common problems, including restricted walkways, incorrect desk orientation and insufficient space for equipment.

Frequently Asked Questions

What is a good general-purpose office desk size?

A desk approximately 140–160cm wide can suit many general office setups, especially when used with one or two monitors. The ideal size still depends on the equipment, room dimensions and storage requirements.

Is a 60cm-deep desk suitable for a computer?

It can be suitable for a laptop or compact monitor, particularly where space is limited. For larger monitors and long periods of computer work, a deeper surface may make comfortable monitor and keyboard positioning easier.

Is a bigger desk always better?

No. A larger desk provides more surface area, but it can also reduce walking space and make a small office feel crowded. Choose the smallest size that comfortably accommodates your actual equipment and tasks while preserving good movement around the room.

Should I choose a straight or L-shaped desk?

Choose a straight desk for a simple, flexible layout or a smaller room. Consider an L-shaped desk when you need two connected work surfaces, additional storage or a dedicated area for paperwork and meetings.

Should the office chair be selected before the desk?

The desk and chair should be considered together. Check the chair’s seat-height range, armrest height and overall width to make sure it fits comfortably beneath and around the desk. You can also read our guide on how to choose an ergonomic office chair.

Final Thoughts

The best office desk is not necessarily the largest or most expensive option. It is the desk that fits the room, supports the equipment you use and allows you to work without unnecessary crowding.

Start by measuring the available floor space, then compare the desk width, depth and height. Allow enough room for the chair, storage and surrounding walkways, and confirm the delivery route before placing an order.

BDLFurniture offers office desks in a range of sizes and configurations for home offices, staff workstations and executive spaces. Explore the BDLFurniture office desk collection and check the measurements on each product page to find a desk that suits your workspace.