How to Measure Square Footage on Google Maps
For anything outdoors and irregular, tracing a boundary on satellite imagery beats walking it with a tape measure — and takes about ninety seconds.
To measure square footage on Google Maps, right-click your starting point, choose Measure distance, then click around the boundary of the area and close the shape by clicking the first point again. Google displays the enclosed area, usually in square feet and acres. It works on desktop browsers; the mobile app supports distance but not area.
When satellite measurement is the right tool
A tape measure is better for rooms. Satellite imagery is better for almost everything outdoors:
- Lots and parcels — particularly irregular ones
- Lawns for sod, seed or fertilizer
- Driveways and patios before quoting a resurfacing job
- Roof footprints as a starting point for a roof calculation
- Fields, paddocks and acreage
It is fast, requires no equipment, and does not require access to the property.
Google Maps, step by step
Works in any desktop browser.
- Go to maps.google.com and find the property. Enter the address, or navigate manually.
- Switch to satellite view using the layer control at the bottom left. Boundaries are far easier to see.
- Zoom in until the whole area fills most of the screen. More zoom means more precision.
- Right-click your first boundary corner and choose Measure distance.
- Left-click each subsequent corner, working around the perimeter.
- Close the shape by clicking your first point again. Google switches from showing distance to showing the enclosed area.
- Read the result at the bottom of the screen — normally given in square feet and acres.
To adjust, drag any point to a new position; the area recalculates live. Click a point to delete it.
Google Earth, which is often better
Google Earth Web (earth.google.com) has a proper measurement tool and, unlike Maps, works for area on mobile.
- Open Google Earth and navigate to the property.
- Click the ruler icon in the left toolbar.
- Click around the boundary.
- Close the shape to see perimeter and area together.
- Change units in the dropdown — square feet, square meters, acres or hectares.
Google Earth also lets you save measurements to a project, which is useful when you are quoting several properties.
Getting an accurate trace
Zoom in as far as the imagery allows. Precision is limited by how many pixels each foot occupies. At neighbourhood zoom a few pixels of error is a few feet; zoomed right in it is a few inches.
Use more points on curves. A curved boundary traced with four points cuts corners badly. Ten to fifteen points along a curve gets you close.
Find the real boundary. Fence lines, kerbs, tree lines and driveway edges are visible. Legal property lines frequently are not — a fence may sit inside or outside the actual line. For lot measurement, cross-check against your plat map or deed.
Watch for lean on tall objects. Satellite imagery is taken at an angle, so tall buildings and trees appear to lean. Trace at ground level, not at roof level, or your footprint will be offset.
Check the imagery date. Google shows a capture date at the bottom. It can be several years old, so recent construction or landscaping may not appear.
How accurate is it really?
For open, clearly bounded ground, satellite measurement typically lands within 1 to 3 percent of a tape measure. On a 10,000 sq ft lot that is 100 to 300 square feet.
Accuracy is good enough for:
- Ordering sod, seed, mulch or fertilizer
- Estimating fencing
- Quoting landscaping or paving
- Getting a rough acreage figure
It is not good enough for:
- A legal survey or property line dispute
- A permit application
- A real estate listing’s official lot size
- Anything where an error creates legal exposure
For those, you need a licensed surveyor. Satellite measurement is a planning tool, not a legal instrument.
Converting the result
Google usually reports both square feet and acres, but if you need other units:
| From square feet | Divide by | Example |
|---|---|---|
| Acres | 43,560 | 21,780 ft² = 0.5 acre |
| Square yards | 9 | 900 ft² = 100 yd² |
| Square meters | 10.7639 | 1,000 ft² = 92.9 m² |
| Hectares | 107,639 | 107,639 ft² = 1 hectare |
The sqft to acres calculator handles all of these, including cents and gunthas for land measured in South Asian units.
Subtracting what is not lawn
For a landscaping estimate you rarely want the whole lot. Trace the full parcel, then trace each excluded area separately and subtract:
- House footprint
- Driveway and walkways
- Patio or deck
- Pool
- Garden beds and hard landscaping
On a 10,000 sq ft lot with a 1,600 sq ft house, a 600 sq ft driveway and a 450 sq ft pool, the treatable lawn is 10,000 − 2,650 = 7,350 square feet. The lawn sqft calculator turns that into pallets of sod or pounds of seed.
Frequently asked questions
Can Google Maps measure square footage?
Yes. Right-click a starting point on desktop, select Measure distance, then click around the perimeter and close the shape by clicking your first point. Google shows the enclosed area in square feet and acres.
How accurate is measuring on Google Maps?
For open ground with clear boundaries, typically within 1 to 3 percent — good enough for landscaping, fencing and sod. It is not accurate enough for a legal survey, a property line dispute, or a permit application.
Can I measure area in the Google Maps mobile app?
The mobile app supports distance measurement but not area. Use a desktop browser, or Google Earth, which does support area measurement on mobile.
How do I measure an irregular lot?
Click a point at every corner or change of direction along the boundary. More points give a closer fit to a curved edge. Close the shape by clicking your first point again.
Is Google Earth better than Google Maps for this?
Google Earth has a dedicated measurement tool with more options, including 3D and elevation-aware measurement, and it works on mobile. For a simple flat lot, either is fine.