Measure your lawn in minutes
Use our free online lawn size calculator to estimate the area of your lawn in square metres. Search your postcode or address, then trace the edge of the grass on the satellite map.
Tip: Measure the grass itself, not the full garden or property. Exclude patios, paths, driveways, flower beds, ponds, sheds and other areas that are not mown.
Why Knowing Your Lawn Size Matters
Choosing a suitable mower: Lawn size helps you compare recommended mowing areas, cutting widths and expected working time.
Planning lawn care products: Seed, fertiliser, wetting agents and other treatments normally give coverage rates per square metre.
Estimating renovation materials: The measurement can help when planning turf, soil, sand or top dressing, although product-specific allowances may still be required.
Keeping application records: Knowing the area makes it easier to record how much product was applied and avoid accidental over-application.
Why Knowing Your Lawn Size Matters
Choosing a suitable mower
Lawn size helps you compare recommended mowing areas, cutting widths and expected working time.
Planning lawn care products
Seed, fertiliser, wetting agents and other treatments normally give coverage rates per square metre.
Estimating renovation materials
The measurement can help when planning turf, soil, sand or top dressing, although product-specific allowances may still be required.
Managing time & workload
The measurement can help when planning turf, soil, sand or top dressing, although product-specific allowances may still be required.
Equipment guide
Choosing a Mower: Lawn Size Is Only the Starting Point
A lawn measurement helps narrow the choice, but square metres should not be considered alone. Two lawns with the same area can require different machines because of their layout, surface, access and desired finish.
Factor |
What to consider |
Why it matters |
|---|---|---|
|
Cutting width and manoeuvrability |
Consider whether the lawn is open or contains tight corners, narrow sections, borders and other features. |
A wider mower covers open lawns efficiently and creates wider stripes, while a narrower mower is easier to guide through complex areas. |
|
Lawn level and condition |
Check whether the lawn is level, regularly maintained, rough, uneven or overgrown. |
Cylinder mowers perform best on reasonably level lawns. Uneven or long grass may need preparation or a different mowing approach. |
|
Slopes and gradients |
Consider the steepest part of the lawn, not just its average slope. |
Stability, traction and operator comfort become increasingly important on sloping ground. |
|
Gates, paths and steps |
Measure the narrowest access point and identify any steps or separate lawn areas. |
The mower must fit through available access and may need to be lifted or transported between areas. |
|
Power source and working time |
Compare battery runtime with the lawn area. For petrol models, consider fuel, servicing and storage. For corded machines, check cable reach and routing. |
The mower needs to complete the lawn safely and conveniently without unnecessary interruptions. |
|
Desired finish and mowing frequency |
Think about the required height of cut, grass condition and how frequently the lawn can be mown. |
A fine, striped finish normally requires regular mowing with a machine suited to lower cutting heights. |
|
Lawn-care tasks |
Consider whether you plan to scarify, verticut, brush, rake or aerate the lawn. |
A mower with compatible interchangeable cartridges can support several lawn-care tasks throughout the year. |
|
Storage and handling |
Check the mower’s dimensions, weight and handle arrangement. |
These details are especially important where storage space is limited or the mower must be carried over steps. |
Frequently Asked Questions
Use the online lawn size calculator to search for your address and trace the grass boundary on the map. The tool calculates an estimated area in square metres after you add at least three points.
Follow the full outline and add a point at each corner or change in direction. Curved lawns need more points than straight sided lawns. You can also split a complicated lawn into smaller sections and add the measurements together.
No. Measure only the grass you mow or maintain. Exclude hard surfaces, planting beds, ponds, sheds and other permanent non-grass areas.
The result is an estimate based on the boundary you plot and the available satellite image. Visibility, shadows, tree cover and outdated imagery can affect the result. Check unclear edges on the ground when the measurement will be used for an important purchase or material calculation.
Use the visible map as a guide, then verify recent landscaping changes or hidden boundaries with a tape measure or measuring wheel. You can calculate simple sections manually and combine the totals.
Find the Right Allett Mower for Your Lawn
Now you know the size of your lawn, explore our range of homeowner cylinder mowers. Compare petrol and battery powered models designed to deliver a beautifully striped finish.
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