Do you have a second lawn? A front and a back count as two. Tap the map to draw the second one. If you only have one, press the green button.
Move the map and zoom in until you can see your house, then tap on it.
Type your address and we will show you the satellite photo of your house. Nothing you enter is stored.
Did the map show the wrong house?
Move the map and zoom in until you can see your roof. Then tap it. We will look up the address and show it back to you, the same as if you had typed it.
Tap each corner of your lawn, going all the way around the edge. Tap the first corner again to close the shape, or press Finish outline.
If a building sits inside your shape, we subtract it. Press Trace it again to clear the shape and start over.
These three numbers are our best guess, worked out from free maps and the shape you drew. Nobody has measured your lawn in person. If a number looks wrong, drag that slider to the right one. The list of mowers changes as you drag.
Older mowers need a real wire around the lawn. You peg it down or bury it, and leave it there for good. The wire stays in the ground for good. It stays in the ground. Laying it takes a day, and you have to dig it up and repair it if you ever cut through it. Mowers without a wire use satellites or cameras to find their way. There is no wire to lay. They cost more, and most need a clear view of the sky.
A side passage or gate the mower drives through to reach the rest of the lawn. Brands say how narrow a gap their mower fits through. It is usually 24 to 40 in. Check this box and we compare that width for each mower, and remind you to measure your gate.
Garden beds, toys, furniture, a hose, or a pet lying on the lawn. Cheaper mowers find obstacles by bumping into them and turning. Check this box and we favor mowers with a camera or a laser scanner (lidar). Those see what is in the way and steer around it.
We compare your lawn with what each mower is rated for, after lowering those ratings a little to be safe. Nobody has driven these mowers on your lawn. Check your lawn in person before you buy a mower.
We measure the shape you drew and take off any building inside it. Brands rate a mower for an easy, open lawn. So we take 20% off the brand's maximum lawn area before we say a mower suits your lawn.
We use free height maps. In the US and Canada they give a reading about every 30 ft. Elsewhere it is about every 100 ft, so the answer is rougher. The height map shows how steep your lawn is overall. It will miss a short steep drop, like a garden wall. If you already know how steep your lawn is, drag the slider to that number.
We estimate how much of your lawn sits under trees from the satellite photo, and it is a rough guess. Tree cover matters because some mowers have no wire buried along the lawn edge. They use satellite signals to work out where they are. Thick branches block the signal, so the mower cannot work out where it is.