Best Trimmer Lines in 2021: Buying Guide

String trimmers are some of the best gardening tools out there. With a string trimmer, you can cut down bushes and grass, as well as other types of plants and vegetation, in a manner that is quick, easy, and efficient. There are many other gardening tools out there, which claim to do similar things, but out of all of those other tools, string trimmers are the best tools available.

With a string trimmer, you have a device that is easy to hold in your hand, easy to pick up and move around, and easy to use. Using a string trimmer, every single trimming task that you are faced with regularly is made significantly easier and more efficient.

However, this is not a guide about string trimmers. String trimmers are tools with their own set of complexities and intricacies, and they are very much worthy of a guide, but this guide is not focused on them.

Instead, we’re going to be taking an in-depth look at the material that string trimmers use to, well, trim. This material is known as “trimmer line”, and trimmer line is a very basic material that isn’t very complex, but it is part of a larger overall system, that of a string trimmer, and we’re going to be diving into trimmer line, in today’s buying guide.

This website is supported by readers. As an Amazon Associate we earn from qualifying purchases.

Trimmer Lines | Bestseller

BLACK+DECKER Trimmer Line, 30-Foot, 0.065-Inch,...
BLACK+DECKER replacement spool system eliminates time spent hand winding string trimmers; The BLACK+DECKER spool utilizes centrifugal force to feed the trimmer line as it is needed

Here’s the thing about trimmer line, while it is a basic material, and while it does perform one function in a pretty standard manner, it does not lack in intricacy or complexity, and there are a variety of key elements that comprise trimmer line. Because of this, we’re going to be looking at all of those key elements, and we’re also going to give you the information you need to understand those key elements, how they affect your experience with the trimmer line. By the end of this guide, you are going to have a very good idea as to how you can find the very best trimmer lines for your string trimmer.

Right before we dive into that, however, we’re going to define what a string trimmer is, in a more in-depth manner, and what trimmer line is, and the advantages that a string trimmer gives you. After that, then we’ll look at the individual elements that go into finding the best trimmer line for your string trimmer.

What Is A String Trimmer?

String trimmers are known as “weed eaters” and “weed trimmers”, and they have several other names, as well. Each one of these names cuts to the heart of the matter, though, and that is the fact that these are devices built around the idea of trimming weeds, as well as other types of vegetation. That’s the entire point of a string trimmer.

If you are dealing with weeds, blackberry bushes, or a bunch of plants that you need to remove quickly and efficiently, then a string trimmer is the best way to do that. It’s a simple device that doesn’t use a blade, but instead, the trimmer line that is fed into the device.

People have debated about the effectiveness of trimmer line, in comparison to using a more conventional blade, but what has been proven is the fact that trimmer line does work very well, and it is a very good alternative to a conventional blade.

Most string trimmers run on gasoline, but there are a lot of electric string trimmers entering the market, as well. Both of these have their advantages, but a lot of the electric string trimmers do rely on being plugged into an outlet, which does affect their mobility, making it harder to move throughout spaces that are farther away from an outlet, which would be things like big open fields and larger yards.

Ultimately, though, a string trimmer is a basic device that uses trimmer line, instead of a blade, to conduct the trimming process. Most string trimmers are small and mobile devices that you can hold with one or two hands and use for all kinds of different trimming related tasks. Due to this mobility, not to mention the affordability of most string trimmers, they are incredibly popular devices, especially with people who own large patches of land that require regular maintenance.

What Is Trimmer Line?

Trimmer line is very simple. Trimmer line is a very flexible synthetic fiber that is known as a monofilament. Monofilaments are used for things like fishing.

Due to the strength of this particular type of fiber, they have no problems cutting through branches and foliage.

Most trimmer lines come in little rolls, and these rolls consist of numerous layers of trimmer line. Then, when you push the trimmer line roll in, and turn on the string trimmer, it begins to work. The device will cut through whatever is in its path.

As you will soon see, different factors go into a single type of trimmer line, and these affect the strength and efficiency of it.

What Are The Biggest Advantages Of Using A String Trimmer?

String trimmers are powerful and effective tools. That is the biggest advantage. Most string trimmers are made of good, high-quality components, and this ensures that they last for a long time. A string trimmer must continue to provide good results, even as they sustain more and more wear-and-tear.

In terms of the effectiveness, string trimmers have no difficulties cutting through bushes, weeds, and other types of foliage. This is because the motors tend to be very good – although, electric motors usually aren’t as good as gas-powered ones – and, the trimmer line is strong, so this also aids in the effectiveness.

With a string trimmer, you can hold the device in your hands, and move it around a variety of different spaces. You aren’t confined to a big and bulky device. Instead, you have mobility and versatility.

What Do I Need To Look For And Consider?

Finding the best trimmer line is a simple process if you are familiar with the key elements that comprise a trimmer line, as well as your own needs.

In this section of the buying guide, you’re going to learn all about that.

What Is The Trimmer Line Made Out Of?

Different materials provide different results. If you intend to cut more heavy-duty foliage, such as thick bushes, then you should be looking at trimmer line that is made of things like aluminum, as well as nylon. These are two very strong materials that give the trimmer line a significant amount of power.

If you don’t need a trimmer line that is especially strong and durable, then you can go with trimmer line that is made out of plastic materials. Nylon is also quite common, and it is a very good choice. When combined with aluminum, though, it is even stronger.

What Shape is The Trimmer Line?

More often than not, you’re going to be buying trimmer line that is round. This is the most common form of trimmer line, and most people use it because it is very effective at taking care of smaller trimming jobs, as well as trimming jobs that are a bit more elaborate, but not a significant amount.

However, you can also find a trimmer line that is multi-sided, and this multi-sided trimmer line is stronger than round trimmer line and provides more strength. If you are cutting thicker foliage, this is a great choice.

Now, if you are cutting dense, thick, and strong foliage, then the best choice for you is trimmer line that is serrated because this serrated trimmer line is excellent for thick and dense foliage.

Ultimately, though, most trimmer lines are pretty similar, and you won’t have a significant amount of difficulty cutting thick foliage with round trimmer line, but having serrated or multi-sided trimmer line will make things a bit easier and more efficient, so keep that in mind.

How Big Is The Trimmer Line, In Terms Of Diameter?

If you have a trimmer line with a relatively small diameter, this is going to affect the strength of the trimmer line and will make it harder for you to cut larger pieces of foliage. With trimmer line that has a larger diameter, the same thing applies, and you need to consider the type of foliage that you will be cutting, regularly.

For a larger diameter, 0.120 is recommended, or larger, and for a smaller diameter, 0.070 is ideal. With a larger diameter, you’ll have an easier time with bigger bushes and weeds. With a smaller, you’ll have an easier time with more precise cutting, for smaller bushes and foliage.


If you own a string trimmer, then you know that having a good trimmer line is very important. Unfortunately, it isn’t always the easiest to find the best trimmer line for your purposes, unless you are aware of the key elements that they are comprised of.

By reading this guide, and using this information, you will have no problems finding the very best trimmer line for your string trimmer!

Trimmer Lines | Bestseller

BLACK+DECKER Trimmer Line, 30-Foot, 0.065-Inch,...
BLACK+DECKER replacement spool system eliminates time spent hand winding string trimmers; The BLACK+DECKER spool utilizes centrifugal force to feed the trimmer line as it is needed

This website is supported by readers. As an Amazon Associate we earn from qualifying purchases.

If you have any questions or do you spot any mistakes, please add them below.

Last update on 2021-03-05 / Most affiliate links and/or Images from Amazon Product Advertising API

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.