How to Choose a Weed Eater for Your Yard

On this page (9 sections)

1. What should you consider when choosing a weed eater?
2. How much power does your yard need?
3. How do you choose a weed eater for yard size?
4. Does shaft shape matter?
5. How much should a weed eater weigh?
6. What cutting width and line should you choose?
7. Do you need a trimmer with attachments?
8. Which weed eater fits each kind of yard?
9. How do you choose a weed eater for your yard?

Choose a weed eater by matching power, weight, shaft, cutting width, and line to your yard. A small lawn with light edging needs less reach and cutting power than a large lot with thick grass or brush.

Start with the work you actually do. Measure the area you trim, note the toughest growth, and consider how long you can comfortably hold the tool.

What should you consider when choosing a weed eater?

Choose a trimmer that can handle your toughest regular task without being cumbersome for the rest. The key factors are power source, weight, shaft style, cutting width, line, and useful attachments.

A mower may handle the open lawn, while a trimmer cleans edges, fence lines, and spots the mower can't reach. If you’re new to the tool, what a string trimmer is used for explains the common jobs.

Compare these factors before picking a model:

• Yard size and growth: More area or thicker weeds can mean longer sessions and a need for more runtime or cutting power.
• Power source: Battery models avoid mixing fuel and offer cordless use. Gas can suit longer or heavier work, but brings fuel and engine upkeep.
• Weight and balance: A heavier trimmer can tire your arms sooner. Check the tool’s weight and whether a strap can help spread the load.
• Shaft and reach: Shaft shape affects access under shrubs and how the tool feels while trimming close to the ground.
• Cutting width and line: A wider path can cover open ground quickly; line size and head design affect what the trimmer can cut and how you reload it.
• Attachments: An attachment-capable model may work with compatible yard tools, if you plan to use them.

For a broader rundown of power, weight, and line, see our string trimmer buying guide.

How much power does your yard need?

Choose enough power and runtime for your thickest growth and longest session. A small patch of lawn edges is a different job from clearing dense weeds across a large lot.

Battery voltage alone doesn't tell you how a trimmer will perform. Consider the motor, cutting width, line, and battery platform as a group, and check which compatible batteries you already own.

A gas trimmer may suit long sessions and demanding growth, but it requires fuel and engine care. Battery models start without mixing gas and oil, though runtime depends on the tool and battery.

For an example of a lighter cordless setup with edging built in, the BLACK+DECKER model has a 12 in cutting width, adjustable handle and height, automatic line feed, and a battery and charger included.

It may suit a smaller yard where edging matters. If you need longer sessions or more cutting capacity, compare higher-voltage models and check their weight before choosing.

See how the tradeoffs differ in our guide to gas vs battery string trimmers.

How do you choose a weed eater for yard size?

Use yard size as a guide to runtime and cutting width, then adjust for growth and obstacles. A large lawn with open edges benefits from covering ground efficiently, while a small yard with beds and fences may need easier control.

For an open area, a wider cutting path can reduce the number of passes. The Greenworks 60V trimmer has a 16 in cutting width and a brushless motor; it also includes a shoulder strap and is attachment capable.

This model weighs 18.7 lb, so account for that when comparing comfort. A wider path is useful only if you can control the tool around the yard's edges and obstacles.

For a small lawn, a narrower trimmer can be easier to guide around garden beds and walkways. The BLACK+DECKER's 12 in path and conversion to a wheeled edger may fit that kind of routine.

Does shaft shape matter?

Choose a shaft that reaches the places you trim and feels comfortable to guide. Straight shafts can provide more reach under shrubs and around obstacles, while curved shafts can feel compact for close work.

Your height and the position of the cutting head affect comfort, so consider how the tool balances when held at working height. A handle that adjusts can also help you find a steadier grip.

If reach is a priority, compare the options in our guide to straight-shaft vs curved-shaft trimmers. Don't choose by shaft shape alone; weigh the complete tool and check its balance.

How much should a weed eater weigh?

Pick the lightest tool that still meets your cutting needs and has a comfortable balance. Weight matters more during a long session or when you need to lift the trimmer around slopes and obstacles.

The listed tool weights for the three examples in this guide range from 5.7 lb to 18.7 lb. Compare weights carefully, since battery and included parts can affect what you carry while working.

The Ryobi 40V kit weighs 13.9 lb and accepts compatible attachments. Its cutting width adjusts from 13 in to 15 in, and the variable-speed trigger gives you control over cutting speed.

A shoulder strap may help distribute weight, as on the Greenworks model. Read more about how much a string trimmer weighs before deciding whether a heavier tool fits your routine.

What cutting width and line should you choose?

Match the cutting width and line to the mix of open ground and close trimming. Wider paths can cover open areas in fewer passes, while narrow paths can be easier to steer beside plants and hard edges.

Check which line size and type the trimmer supports before buying replacement spools. Don't assume all heads accept the same line or reload in the same way.

A bump-feed head releases more line when tapped against the ground, while an automatic-feed design advances line as needed. Choose the setup you find easier to manage, and follow the tool's instructions for reloading.

Our guide to choosing trimmer line size covers how to match line to the tool and job.

Do you need a trimmer with attachments?

Choose an attachment-capable trimmer if you expect to use compatible tools on the same powerhead. It can save storage space when you want to add functions such as edging, but compatibility varies by brand and model.

The Ryobi accepts RYOBI Expand-It attachments and other universal gas attachments. The Greenworks model supports compatible Greenworks attachments, while the BLACK+DECKER converts between trimming and edging without a separate attachment.

Check the specific attachment compatibility before buying. If you only need to trim grass, a simpler model may be easier to store and use.

Which weed eater fits each kind of yard?

For a compact lawn, prioritize low weight and easy edging; for a larger yard, consider cutting width, runtime, and reach. For thicker growth, compare the tool's motor, supported line, and intended workload.

The BLACK+DECKER is a fit to consider for light trimming and edging, with its 12 in cutting width and 2-in-1 design. The Greenworks offers a 16 in cutting width and shoulder strap for larger areas, while the Ryobi adds attachment capability and adjustable width.

These are different configurations, not a ranking for every yard. Consider the work you face most often, how much weight you can handle, and whether compatible batteries or attachments would be useful.

How do you choose a weed eater for your yard?

When deciding how to choose a weed eater, start with yard size and growth, then check weight, shaft, cutting width, line, and attachments. For small lawns with routine edging, a lighter tool with an edging mode may be enough; larger areas can call for more width and runtime.

Consider the Greenworks if its wider path suits your open space and its weight works for you. Consider the Ryobi if you want compatible attachments and adjustable cutting width, or the BLACK+DECKER if a 2-in-1 trimmer and edger fits your smaller-yard routine.

Before buying, check line compatibility and the tool's weight. Then use the string trimmer buying guide to compare power, weight, and line in one place.

Frequently asked questions

What should I look for when choosing a weed eater?

Match the trimmer to your yard's size, grass, and edges. Compare power source, weight, shaft shape, cutting width, line size, and whether you need attachments.

For a small lawn with light edging, a light cordless model may be enough; thick growth and a large area call for more cutting capacity and runtime.

Is a straight or curved shaft better?

A straight shaft generally gives you more reach under shrubs and around obstacles, while a curved shaft can feel easier to handle for close trimming on a small lawn. Try to match the shaft to where you work, and compare overall tool weight and balance before choosing.

How much power does a weed eater need?

The right power depends on the growth and area. Light grass along a small lawn may not need a high-voltage or gas model, while thick weeds and longer sessions can call for more power and runtime.

Compare motor, battery platform, cutting width, and line compatibility together.

What cutting width should I choose?

A narrower cutting width can be easier to control near beds, fences, and tight corners. A wider path covers more ground per pass, which can help on open areas, but the tool may be larger and heavier.

Match the width to your yard's mix of edges and open space.