Lawn size

The best robot mowers for a 1-acre lawn

Every robot mower we track that can keep a 1-acre lawn (4,047 m²) cut, ranked for that lawn: right-sized first, then price and stock. A mower rated for under 85% of the lawn cannot keep it cut, so it is not listed.

Store prices · checked 28 h agoVerified · checked 6 wk ago
20fit this lawn
$1,999.99cheapest that fits
6in stock now

20 of the 76 robot mowers we track can keep a 1-acre lawn cut: 13 rated for it with headroom, 6 rated just under it, 1 rated for far more. Our best match for 1 acre is the Segway Navimow X330, rated for 1 acre and 50% slopes, from $2,299 at Segway Navimow Store. The cheapest that fits is the Dreame Roboticmower A3 AWD Pro 3500 at $1,999.99.

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Ranked for a lawn of 1 acre (4,047 m²) by the same scoring as our main table. Max area and slope are the manufacturer's rated maximums on an open lawn; price is the cheapest current price we track, linked to the listing that states it. 20 of 76 tracked mowers fit. Add your slope, trees and budget on the full table

Method

How we decide what fits 1 acre

A robot mower's rated area is the most lawn its maker says it can keep cut, on an open lawn. We hold it against a 1-acre lawn (4,047 m²) by the same rule on every page, including each model's own fit check:

  • Rated for 1x to 3x the lawn: a comfortable fit with headroom (13 here).
  • Rated for 85% to 100% of it: it fits with no headroom, fine for an open, simple lawn (6 here).
  • Rated for more than 3x: it fits, but you pay for capacity you will not use (1 here).
  • Rated for under 85%: it cannot keep the lawn cut, so it is left out.

Slopes, obstacles, narrow passages and separate zones all cut a mower's real capacity below its rating, so a lawn like that wants headroom: Dreame's buying guide, for one, says ratings assume a flat, rectangular lawn with no obstacles, and that trees, beds, slopes and complex boundaries can cost 20 to 30% of the figure. The order within the list weighs fit, price and stock the way our main table does. Read the methodology

Questions

Robot mowers for 1 acre: common questions

What is the best robot mower for 1 acre?

For a 1-acre lawn (4,047 m²), our best match is the Segway Navimow X330: rated for 4,047 m² (1 acre) and 50% (27°) slopes, from $2,299 at Segway Navimow Store, in stock. It ranks first of the 20 mowers we track that can keep a lawn this size cut, by the same scoring as our main table: right-sized for the lawn first, then price and stock.

How many robot mowers can mow 1 acre?

20 of the 76 robot mowers we track: 13 are rated for 1 acre or more (up to 3x the lawn), 6 are rated just under it (85% to 100% of the lawn, so they fit with no headroom), 1 are rated for more than 3x it. A mower rated for under 85% of the lawn cannot keep it cut, so it is not counted.

How much does a robot mower for 1 acre cost?

From $1,999.99 (the Dreame Roboticmower A3 AWD Pro 3500) to $5,499 (the Yarbo Y40 Lawn Mower Pro), at each model's cheapest seller we track today. The median of the 20 with a current price is $2,899.

What is the best robot mower for a 1-acre lawn with hills?

17 of the mowers that fit 1 acre are rated for slopes of 50% (27°) or more. The best ranked of them for this lawn is the Segway Navimow X330 (rated 50%); the steepest rated is the Lymow One Plus at 100% (45°).

Which robot mower for 1 acre works under trees?

3 of them navigate without a satellite fix, by LiDAR or camera vision, so tree cover does not interrupt them: the Dreame Roboticmower A3 AWD Pro 5000, the Mammotion Luba 3 AWD 5000 and the Dreame Roboticmower A3 AWD Pro 3500. The others use satellite RTK, which needs open sky; RTK with camera assist copes with some trees.

BestRobotMower.co is an independent informational comparison site, not a manufacturer or a retailer. Specifications and prices are curated from public sources and can change or be incomplete. Always confirm the current spec, price, and availability with the manufacturer or seller before buying. Coverage and slope figures are rated maximums on an open lawn; real performance depends on your yard.