What Size Robot Lawn Mower Do I Need? 500m² to 1600m² Explained

Choosing the right size robot lawn mower isn't quite as simple as checking the size of your garden.

A mower rated for 600m² might sound ideal for a 600m² garden, but the figure that really matters is your actual mowable lawn area — and factors such as slopes, narrow passages, separate lawn zones, trees and complicated boundaries can also influence which mower is best.

Robot lawn mowers are designed with different maximum lawn capacities, cutting widths and mowing efficiencies. Choosing a model suited to your garden can help ensure it has enough capacity to maintain the lawn consistently without paying for performance you simply don't need.

In this guide, we'll explain how to choose the right robot lawn mower for gardens ranging from around 500m² to 1600m².

Robot Lawn Mower Sizes at a Glance

First: How Big Is Your Lawn?

Before choosing a robot lawn mower, it's important to distinguish between garden size and lawn size.

If your entire property covers 800m², that doesn't necessarily mean you have 800m² of grass.

Your house, driveway, patio, flower beds, paths, sheds and other areas all reduce the amount of grass the mower actually needs to maintain.

What you're interested in is the approximate mowable lawn area.

If you already know this figure, choosing a suitable mower becomes much easier.

How Can I Measure My Lawn?

For a simple rectangular lawn, multiply its approximate length by width.

For example:

20m × 20m = 400m²

For an irregular garden, divide the lawn into several simpler sections, calculate each area separately and then add them together.

You don't necessarily need a surveyor-level measurement. The objective is to get a reasonable estimate so you know whether you're dealing with a 300m² lawn or a 1300m² one.

Remember to exclude substantial areas that won't actually be mowed, such as patios, buildings and large flower beds.

Should I Buy a Robot Mower Bigger Than My Lawn?

You don't necessarily need to buy the next model up simply because it has a higher maximum lawn capacity.

However, it's sensible to avoid choosing a mower that's clearly undersized for the job.

Maximum lawn-area figures provide a useful starting point, but two gardens of exactly the same size can present very different challenges.

A simple, open 700m² lawn may be relatively straightforward to maintain.

Another 700m² lawn could contain steep gradients, several separate zones, narrow passages, trees and complicated boundaries.

That's why lawn size should be the beginning of your decision rather than the only consideration.

Robot Lawn Mowers for Lawns Up to 500m²

For smaller lawns, there is little reason to buy a robot mower designed primarily to cover very large areas unless you specifically want its additional features.

The Einhell FREELEXO CAM 500 is designed for lawns up to 500m².

It uses an integrated camera to recognise visual lawn boundaries, with ultrasonic sensors helping it detect physical obstacles and boundaries.

Its cutting width is 18cm, with an adjustable cutting height of 20–60mm.

Unlike traditional robot mowers that require a perimeter cable around the entire lawn, the FREELEXO CAM uses camera-based boundary recognition.

A 500m² Robot Mower Could Be Right If:

• You have a relatively small lawn
• Your lawn has clearly recognisable boundaries
• You don't need the capacity of a larger mower
• You want straightforward automated mowing
• You'd prefer to avoid installing a traditional perimeter wire around the entire lawn

For a compact garden, buying substantially more mowing capacity than you require isn't always necessary.

Robot Lawn Mowers for Lawns Up to 600m²

For lawns approaching 600m², the ECOVACS GOAT O600 RTK provides a step up in navigation and smart mapping technology.

The O600 uses Multi-Fusion RTK Navigation, combining high-precision positioning with camera technology.

Instead of a traditional perimeter wire, compatible virtual mapping allows the mower to understand its designated mowing area.

It has a 19cm cutting width, a cutting-height range of 30–80mm and can navigate suitable passages as narrow as approximately 70cm.

A 600m² Robot Mower Could Be Right If:

• Your lawn is up to approximately 600m²
• You want intelligent digital mapping
• Your garden contains narrower connecting areas
• You want advanced obstacle avoidance
• You want app-based lawn management
• Your garden has suitable conditions for RTK navigation

The O600 is particularly interesting for smaller gardens where sophisticated navigation is more important than having a very wide cutting system.

Robot Lawn Mowers for Lawns Up to 800m²

Once lawns become larger, mowing efficiency starts to become increasingly important.

The ECOVACS GOAT O800 RTK is designed for lawns up to 800m² and increases cutting width to 22cm.

Its mowing efficiency of approximately 140–180m² per hour also allows it to cover larger areas more quickly than the smaller O600.

Navigation is handled through LiDAR-Enhanced RTK, combining high-precision positioning with additional sensing technology.

An 800m² Robot Mower Could Be Right If:

• Your lawn is approaching 800m²
• You want greater mowing efficiency
• You want a wider cutting system
• Your garden contains slopes
• You want intelligent obstacle avoidance
• You have multiple areas or a more involved lawn layout

For a medium-sized garden, the combination of greater capacity and a wider cutting system can become more useful than simply choosing a mower capable of technically covering the lawn.

Robot Lawn Mowers for Lawns Up to 1200m²

Moving beyond approximately 1000m² puts considerably greater demands on a robot mower.

The ECOVACS GOAT O1200 LiDAR PRO is designed for lawns up to 1200m² and uses HoloScope 360 Dual-LiDAR Navigation rather than relying on an external RTK reference antenna.

This can make it particularly interesting for more complex gardens or environments where surrounding buildings and mature trees could make satellite positioning more challenging.

The O1200 also includes an integrated TruEdge Trimmer, designed to tackle grass along suitable lawn edges and reduce the amount of manual finishing required.

A 1200m² Robot Mower Could Be Right If:

• You have a large lawn
• Your garden has a more complicated layout
• You have mature trees or surrounding buildings
• You want Dual-LiDAR navigation
• You want automated edge trimming
• Your lawn contains multiple mowing zones
• You want to avoid an external RTK reference antenna

At this size, choosing the right navigation technology can become just as important as choosing sufficient mowing capacity.

Robot Lawn Mowers for Lawns Up to 1600m²

Large lawns require a mower capable of covering substantial areas efficiently.

The ECOVACS GOAT A1600 LiDAR PRO is designed for lawns up to 1600m² and uses a much wider 33cm dual-disc cutting system.

It can achieve mowing efficiency of up to approximately 400m² per hour, making it substantially better equipped for maintaining large areas of grass.

The A1600 also uses Dual-LiDAR navigation and features an integrated TruEdge Trimmer.

Its electrically adjustable 30–90mm cutting height and ability to handle gradients of up to 50% further distinguish it as a mower designed for larger and more demanding lawns.

A 1600m² Robot Mower Could Be Right If:

• You have a genuinely large lawn
• Mowing efficiency is particularly important
• You want a wider cutting system
• Your garden contains challenging gradients
• You want Dual-LiDAR navigation
• You want automated edge trimming
• You need greater cutting capacity than a smaller robot mower provides

The benefit of moving to a mower such as the A1600 isn't simply that it can technically cover more grass. Its wider cutting platform allows it to maintain larger areas much more efficiently.

Does Cutting Width Matter?

Yes — particularly as lawn size increases.

A wider cutting system covers more grass with every pass.

For a small garden, the difference between an 18cm and 33cm cutting width may not be especially important.

Across a large lawn, however, that difference becomes much more significant.

This is why larger-capacity robot mowers often combine greater lawn coverage with wider cutting systems and higher mowing efficiency.

The goal isn't necessarily to find the mower with the widest cutting width. It's to find one with a cutting system appropriate for the area it needs to maintain.

What If My Lawn Is Split Into Different Areas?

Multiple lawn areas can make choosing a robot mower slightly more complicated.

For example, you might have:

• A front and back lawn
• Grass separated by a path
• Narrow passages between lawn areas
• Several distinct garden zones
• Areas you want mowed at different times

Modern robot lawn mowers with digital mapping can offer multi-zone management, allowing compatible models to manage different areas within the garden.

When comparing mowers, therefore, don't only measure the total lawn area. Consider how the different areas connect to each other.

A mower's ability to navigate narrow passages or move between mapped zones could be just as important as its maximum lawn capacity.

Do Slopes Affect Which Robot Lawn Mower I Need?

Yes.

If your garden contains significant gradients, always check the mower's maximum supported slope.

The Einhell FREELEXO CAM 500 is designed to handle gradients up to 25%.

The ECOVACS GOAT range offers greater slope capability on the models featured here, with options designed to tackle substantially steeper terrain.

The A1600 LiDAR PRO, for example, can handle gradients of up to 50%.

For a flat garden, this specification may make very little difference.

For a sloping garden, it could be one of the most important specifications you check.

What If My Garden Has Lots of Trees?

Trees can affect your decision in two ways.

First, the mower needs effective obstacle detection to navigate safely around trunks and other objects.

Second, dense tree cover can potentially affect satellite-based navigation systems.

RTK robot mowers use high-precision satellite positioning, while LiDAR-based models can navigate by measuring and mapping their physical surroundings.

If your lawn is heavily surrounded by mature trees or buildings, it's worth considering whether RTK or LiDAR navigation is more appropriate for the environment.

Don't Choose on Lawn Size Alone

The maximum recommended lawn area is one of the most useful specifications on a robot mower — but it shouldn't make the entire decision for you.

Before choosing, consider:

• Lawn area — how much grass actually needs mowing?
• Layout — is the lawn open or complicated?
• Zones — is it one lawn or several separate areas?
• Passages — does the mower need to travel through narrow sections?
• Slopes — how steep is the garden?
• Trees and buildings — could they affect navigation?
• Cutting width — is it appropriate for the size of the lawn?
• Mowing efficiency — how quickly can the mower cover larger areas?
• Navigation — camera, RTK or LiDAR?
• Edge trimming — how much manual finishing do you want to do?

Two gardens with the same lawn area can ultimately require very different robot lawn mowers.

Which Size Robot Lawn Mower Should You Buy?

As a simple starting point:

Up to 500m²: Consider the Einhell FREELEXO CAM 500 for straightforward camera-based automated mowing.

Up to 600m²: Consider the ECOVACS GOAT O600 RTK for advanced smart mapping on smaller lawns.

Up to 800m²: Consider the ECOVACS GOAT O800 RTK for medium-sized lawns requiring greater cutting capacity and mowing efficiency.

Up to 1200m²: Consider the ECOVACS GOAT O1200 LiDAR PRO for larger or more complex gardens, particularly where Dual-LiDAR navigation and edge trimming are attractive.

Up to 1600m²: Consider the ECOVACS GOAT A1600 LiDAR PRO for large lawns where a wider cutting system and significantly greater mowing efficiency become important.

These figures provide a useful starting point, but always consider the layout and conditions of your garden alongside its total lawn area.

Shop Robot Lawn Mowers at Foy's Electrical

Explore Robot Lawn Mowers at Foy's Electrical and find automated mowing solutions for lawns of different sizes and layouts.

From compact camera-based robot mowers to advanced RTK and Dual-LiDAR models for large gardens, compare lawn capacity, navigation, cutting performance and smart features to find the right mower for your garden.