The Best RYOBI String Trimmers in 2026: 9 Picks
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These are the best RYOBI string trimmers for 2026. We compared 9 models based strictly on published specifications. RYOBI offers cordless trimmers in 13-inch, 15-inch, 16-inch, and 17-inch cutting widths. Options include attachment-capable straight shafts, carbon fiber shafts, and dedicated edger combos. The top pick is the RYOBI 40V 15-Inch Attachment Capable String Trimmer. It leads because it balances a lightweight 11-pound frame with a 15-inch cut for existing 40V owners.
Quick picks
Our 9 picks
RYOBI 40V 15-Inch Attachment Capable String Trimmer
Best for: RYOBI 40V owners needing a lightweight trimmer
- Voltage
- 40V
- Cutting Swath
- 15 in.
- Cutting Width
- 15-Inch
- Included Battery
- Tool Only
- Shaft Type
- Attachment Capable
- Dimensions
- 40 × 13 × 5 inches
View on Amazon: RYOBI 40V 15-Inch Attachment Capable String Trimmer
This is the RYOBI 40V Attachment Capable 15" String Trimmer bare tool. It features a 15-inch cutting swath and weighs 11 pounds. The unit is attachment capable, allowing you to use it with other Expand-It tools. It offers up to 71 minutes of runtime with a 40V 4Ah battery. This model is for users who already own compatible batteries and want a versatile, lightweight trimmer.
Pros
- 15-inch cutting width for efficient trimming
- Attachment capable for expanded tool compatibility
- Lightweight 11-pound design for easier handling
- Up to 71 minutes runtime with 4Ah battery
Cons
- Sold as a bare tool without a battery
- No battery charger included in the package
- Requires separate purchase of compatible batteries
Good fit if
- You already own RYOBI 40V batteries
- You want to use Expand-It attachments
- You prefer a lighter trimmer for extended use
Skip if
- You need a complete kit with battery and charger
- You prefer a wider 17-inch cutting path
- You want a dedicated unit without attachments
Verdict: RYOBI 40V 15" Attachment Trimmer is a practical choice for owners of the RYOBI 40V ecosystem who need a lightweight, attachment-capable trimmer. It fits users who already have batteries and want to save space by sharing tools.
RYOBI ONE+ 18V 13-Inch String Trimmer and Edger
Best for: Small yards and edging tasks
- Voltage
- 18V
- Cutting Swath
- 11 in. to 13 in.
- Line Feed System
- auto-feed
- Battery Capacity
- 4.0Ah
- Cutting Width
- 13-Inch
- Power Source
- Cordless
View on Amazon: RYOBI ONE+ 18V 13-Inch String Trimmer and Edger
This RYOBI model offers a 13-inch cutting width and 18V power from a 4.0 Ah battery. It features an auto-feed line head and a pivoting head for edging. The variable speed trigger gives you control. It includes the battery and charger. This setup suits small yards where portability matters.
Pros
- 13-inch adjustable cutting width
- 18V 4.0 Ah battery included
- Auto-feed line head
- Pivoting head for edging
- Variable speed trigger
Cons
- 18V system has less power than 40V models
- 13-inch cutting width is narrower than competitors
- Heavier at 7 pounds than some lighter options
Good fit if
- You have a small lawn under 1/4 acre
- You want to edge without switching tools
- You prefer a lightweight tool for easy handling
Skip if
- You need to cut thick weeds or large areas
- You already own 40V batteries and want compatibility
- You require a wider cutting swath for efficiency
Verdict: RYOBI 18V 13 in. Cordless String Trimmer fits users with small yards who value lightweight handling and edging versatility over raw power.
RYOBI 40V 15-Inch Attachment Capable String Trimmer
Best for: Users with Expand-It attachment collections
- Voltage
- 40-Volt
- Cutting Swath
- 13 in. to 15 in.
- Power Source
- battery
- Line Feed System
- bump-feed
- Battery Capacity
- 4.0 Ah
- Size
- 15-Inch
View on Amazon: RYOBI 40V 15-Inch Attachment Capable String Trimmer
This 40-Volt cordless string trimmer features a 4.0 Ah battery and a 15-inch cutting width. It includes a 90-minute charger and offers an adjustable cutting width from 13 to 15 inches. The attachment-capable shaft accepts RYOBI Expand-It tools. You get variable speed control and a bump-feed line system for easy reloading. It is a practical choice for users who want to expand their tool ecosystem with compatible attachments.
Pros
- 40-Volt high-capacity battery for extended runtime
- Attachment-capable shaft for Expand-It compatibility
- Adjustable 13 to 15-inch cutting width
- Includes 4.0 Ah battery and 90-minute charger
Cons
- Heavier at 13.9 pounds compared to bare tools
- Bump-feed line system requires manual tapping
- No brushless motor listed in specifications
Good fit if
- You already own RYOBI 40V Expand-It attachments
- You prefer a complete kit with battery and charger
- You need variable speed control for different tasks
Skip if
- You want a lightweight bare tool for portability
- You require a brushless motor for maximum efficiency
- You prefer a fixed cutting width for simplicity
Verdict: RYOBI 40V 15 in String Trimmer fits users who want a versatile, attachment-ready tool with a complete battery kit. It suits those prioritizing Expand-It compatibility over bare-tool weight savings.
Ryobi 15 in. Expand-It Trimmer Attachment
Best for: existing Ryobi tool owners
- Shaft Type
- straight
- Line Feed System
- bump feed
- Size
- 15-Inch
- Weight
- 6 ounces
This is a Ryobi Expand-It straight shaft trimmer attachment, not a standalone tool. It features a 15-inch cutting width and a bump feed line system. The unit weighs only 6 ounces and includes a bladed head, dual line attachment, and speed winder. It is designed for users who already own compatible Ryobi power heads and need a lightweight, versatile attachment for edging and trimming tasks.
Pros
- 15-inch cutting width
- Includes bladed head and dual line attachment
- Lightweight 6-ounce construction
- Bump feed line system
Cons
- Battery and charger not included
- Requires compatible Ryobi power head
- Sold as an attachment only
Good fit if
- You already own a compatible Ryobi power head
- You need a lightweight attachment for detailed trimming
- You want multiple head options in one package
Skip if
- You need a complete standalone string trimmer
- You do not have a compatible Ryobi power source
- You prefer a brushless motor system
Verdict: Ryobi 15 in. Expand-It Trimmer Attachment is a practical addition for existing Ryobi users. It offers versatility through included heads, but it is not a complete tool for new buyers.
RYOBI 40V 17-Inch Carbon Fiber String Trimmer
Best for: Wider cutting width and lightweight shaft
- Voltage
- 40V
- Cutting Swath
- 17 in
- Power Source
- Battery
- Motor Type
- Brushless
- Shaft Type
- Carbon fiber
- Included Battery
- Tool Only
View on Amazon: RYOBI 40V 17-Inch Carbon Fiber String Trimmer
This 40V HP brushless string trimmer features a 17-inch cutting swath and a carbon fiber shaft. It weighs 12 pounds and measures 36 inches long. The tool-only design means you supply your own battery. It suits users who want a wider cut and a lighter, stiffer shaft for extended trimming sessions.
Pros
- 40V HP brushless motor
- 17-inch cutting width
- Carbon fiber shaft
- 12-pound weight
Cons
- Sold as a bare tool without battery
- 36-inch length may be bulky for tight spaces
- 12-pound weight is heavier than some 13-inch models
Good fit if
- You need a wider 17-inch cutting path
- You already own compatible 40V batteries
- You prefer a lightweight carbon fiber shaft
Skip if
- You do not own a 40V battery
- You prefer a narrower 13-inch cutting width
- You want a complete kit with battery included
Verdict: RYOBI 40V HP Brushless 17 in Trimmer offers a wider cut and lighter shaft for users who already have the battery. It is a solid choice for those prioritizing cutting width and shaft stiffness.
RYOBI 18V Brushless 15-Inch String Trimmer
Best for: users with existing 18V batteries
- Voltage
- 18V
- Cutting Swath
- 15 in.
- Motor Type
- brushless
- Cutting Width
- 15-Inch
- Power Source
- Cordless
- Included Battery
- Tool Only
This RYOBI ONE+ HP tool is a 15-inch cordless string trimmer powered by an 18V brushless motor. It is sold as a bare tool, meaning you must supply your own 18V battery. The design is compact, measuring 15 inches in length and 5 inches in height. This setup suits users who already own RYOBI 18V batteries and want a lightweight option for standard lawn edges and trimming tasks.
Pros
- 18V brushless motor for efficient power delivery
- 15-inch cutting swath for manageable width
- Compact 15x5x15 inch form factor
- Compatible with existing RYOBI ONE+ batteries
Cons
- Sold as a bare tool with no battery included
- 15-inch cutting width is narrower than 17-inch competitors
- 18V platform offers less power than 40V models
Good fit if
- You already have RYOBI 18V batteries
- You need a lightweight trimmer for small yards
- You want to save money by using existing gear
Skip if
- You do not own an 18V battery
- You need a wider 17-inch or 15-inch cut
- You prefer a complete kit with a battery included
Verdict: RYOBI ONE+ HP 18V 15 in. Brushless Trimmer fits users who already own RYOBI 18V batteries and need a lightweight, compact tool for standard trimming tasks.
RYOBI 18V 15-Inch Attachment Capable String Trimmer
Best for: Quiet operation and multi-tool versatility
- Voltage
- 18V
- Cutting Swath
- 13 in to 15 in
- Power Source
- battery
- Motor Type
- brushless
- Battery Capacity
- 4.0Ah
- Cutting Width
- 15-Inch
View on Amazon: RYOBI 18V 15-Inch Attachment Capable String Trimmer
This RYOBI ONE+ HP model pairs an 18V brushless motor with a 4.0 Ah battery for gas-like power. The 15-inch cutting swath is adjustable down to 13 inches for runtime. It operates 89% quieter than gas units. The shaft accepts Expand-It attachments. You get over 40 minutes of runtime. It suits users who need quiet operation and multi-tool versatility.
Pros
- Brushless motor delivers gas-like power
- Operates 89% quieter than gas trimmers
- Includes 4.0 Ah battery for 40+ minutes runtime
- Cutting swath adjusts from 13 to 15 inches
- Compatible with Expand-It attachments
Cons
- 18V battery platform offers less power than 40V options
- 15-inch cut width is narrower than 17-inch competitors
- Heavier build than standard single-speed models
Good fit if
- You need a quiet trimmer for early morning or late evening use
- You want to use Expand-It attachments for other yard tasks
- You prefer a brushless motor for longer tool life
Skip if
- You require the maximum cutting width available
- You need the highest voltage platform for heavy-duty clearing
- You prefer a lighter, simpler single-function tool
Verdict: RYOBI ONE+ HP 18V 15 in. Brushless Trimmer fits users who value quiet operation and multi-tool versatility over maximum cutting width or raw voltage power.
RYOBI 16-Inch Carbon Fiber String Trimmer
Best for: wider cuts and tool versatility
- Voltage
- 40V
- Cutting Swath
- 16 in
- Motor Type
- brushless
- Shaft Type
- carbon fiber
- Cutting Width
- 16-Inch
- Dimensions
- 55 × 11 × 9 inches
This RYOBI model features a 16-inch cutting swath and a brushless motor powered by 40V HP technology. It uses a carbon fiber shaft for reduced weight and includes EXPAND-IT attachment capability. The unit weighs 12 pounds and offers over 45 minutes of runtime with a 40V 4Ah battery. It suits users needing wider cuts and tool versatility.
Pros
- 16-inch cutting width for faster coverage
- Brushless motor for efficiency
- Carbon fiber shaft reduces weight
- EXPAND-IT attachment capable
- 40V HP technology delivers high power
Cons
- Bare tool; battery not included
- 12-pound weight may fatigue some users
- No variable speed control listed
Good fit if
- You want a wider 16-inch cut
- You need EXPAND-IT compatibility
- You prefer a lightweight carbon fiber shaft
Skip if
- You need a battery included
- You require a variable speed trigger
- You prefer a 13-inch or 15-inch cut
Verdict: RYOBI 16-inch Carbon Fiber Trimmer fits users who need a wider 16-inch cut and tool versatility through EXPAND-IT compatibility. It is ideal for those who want a lightweight carbon fiber shaft without the bulk of a gas engine.
RYOBI 40V 17-Inch Attachment Capable Trimmer
Best for: Quiet cutting with existing 40V batteries
- Voltage
- 40V
- Cutting Swath
- 17 in
- Power Source
- battery
- Motor Type
- brushless
- Included Battery
- Tool Only
- Shaft Type
- Attachment Capable
View on Amazon: RYOBI 40V 17-Inch Attachment Capable Trimmer
This RYOBI 40V HP Brushless Whisper Series string trimmer offers a 17-inch cutting swath and weighs 11 pounds. It features a brushless motor and attachment capability for expanded use. The tool operates at 86% less noise than gas models. It delivers runtime comparable to a 32cc gas trimmer using a 40V battery. This model is sold as a bare tool, so you must supply your own battery.
Pros
- 17-inch cutting width for efficient coverage
- Brushless motor for improved durability and power
- 86% quieter operation than gas trimmers
- Attachment capable for versatile tool usage
Cons
- Sold as a bare tool without a battery
- Heavier at 11 pounds than some competitors
- Larger 17-inch swath may be bulky for tight spaces
Good fit if
- You already own 40V RYOBI batteries
- You need a wide 17-inch cutting path
- You want to use multiple attachments
Skip if
- You do not have a compatible 40V battery
- You prefer a lighter tool under 10 pounds
- You need a narrow cutting width for precision
Verdict: RYOBI 17 in. 40V Brushless String Trimmer is a robust option for users with existing 40V batteries who value quiet operation and a wide cutting path. It suits those who plan to expand their toolkit with compatible attachments.
Specifications side by side
| Spec | RYOBI 40V 15-Inch Attachment Capable String Trimmer | RYOBI ONE+ 18V 13-Inch String Trimmer and Edger | RYOBI 40V 15-Inch Attachment Capable String Trimmer | Ryobi 15 in. Expand-It Trimmer Attachment | RYOBI 40V 17-Inch Carbon Fiber String Trimmer | RYOBI 18V Brushless 15-Inch String Trimmer | RYOBI 18V 15-Inch Attachment Capable String Trimmer | RYOBI 16-Inch Carbon Fiber String Trimmer | RYOBI 40V 17-Inch Attachment Capable Trimmer |
|---|---|---|---|---|---|---|---|---|---|
| Voltage | 40V | 18V | 40-Volt | not specified | 40V | 18V | 18V | 40V | 40V |
| Cutting Swath | 15 in. | 11 in. to 13 in. | 13 in. to 15 in. | not specified | 17 in | 15 in. | 13 in to 15 in | 16 in | 17 in |
| Power Source | not specified | not specified | battery | not specified | Battery | not specified | battery | not specified | battery |
| Motor Type | not specified | not specified | not specified | not specified | Brushless | brushless | brushless | brushless | brushless |
| Shaft Type | not specified | not specified | not specified | straight | Carbon fiber | not specified | not specified | carbon fiber | not specified |
| Line Feed System | not specified | auto-feed | bump-feed | bump feed | not specified | not specified | not specified | not specified | not specified |
| Battery Capacity | not specified | 4.0Ah | 4.0 Ah | not specified | not specified | not specified | 4.0Ah | not specified | not specified |
| Cutting Width | 15-Inch | 13-Inch | not specified | not specified | not specified | 15-Inch | 15-Inch | 16-Inch | not specified |
| Size | RY40205 | 13 inches | 15-Inch | 15-Inch | not specified | not specified | 15 in | 16" | 17 in |
| Included Battery | Tool Only | not specified | not specified | not specified | Tool Only | Tool Only | not specified | not specified | Tool Only |
| Dimensions | 40 × 13 × 5 inches | 28 × 10 × 5 inches | 35.4 × 7.8 × 6.7 inches | not specified | 36 × 12 × 5 inches | 15 × 15 × 5 inches | 73 × 12 × 5 inches | 55 × 11 × 9 inches | 72 × 12 × 5 inches |
| Weight | 11 pounds | 7 pounds | 13.9 pounds | 6 ounces | 12 pounds | not specified | not specified | 12 pounds | 11 pounds |
| Color | GREEN | GREEN | Multicolor | Black | LIME GREEN/ BLACK | Yellow | Green | Green | Green |
| Model | RY40205 | P20180 | #RY40250 | not specified | RY402110VNM | P20019BTLVNM | PBLST01K | RY40HPST01B | RY40HPST02B |
RYOBI String Trimmer Lineup Guide
The RYOBI lineup splits into 18V and 40V ecosystems. The 18V models, like the ONE+ 13-Inch String Trimmer and Edger, suit small yards. They offer lightweight handling and edging versatility. The 40V options, such as the 15-Inch Attachment Capable String Trimmer, provide more power for larger areas. These tools often include battery kits for immediate use.
Shaft type further divides the choices. Attachment-capable shafts allow you to add other tools, while carbon fiber shafts reduce weight. The 17-Inch Carbon Fiber String Trimmer offers a wider cut with a lighter feel. You should match the voltage and shaft style to your existing batteries and yard size.
Who RYOBI String Trimmers Suit
RYOBI fits users invested in its 18V or 40V battery ecosystems. The range spans 13-inch to 17-inch cutting widths. You can choose between attachment-capable straight shafts for versatility, carbon fiber shafts for stiffness, or dedicated edger combos. Weight varies from 6 ounces for attachments to 13.9 pounds for complete kits. Most models are tool-only, requiring you to supply your own batteries. Gaps include no gas-powered options and no self-propelled models. The lineup prioritizes modularity and shared power sources over standalone performance.
If you need office cutting tools, compare sheet capacity specs across the best paper trimmers for A4.
How to choose the right one
-
Match your battery voltage
Check which battery ecosystem you already own. RYOBI offers 18V and 40V options. If you have existing 18V batteries, the ONE+ 13-Inch String Trimmer and Edger uses a 4.0 Ah pack for small yards. For larger jobs, the 40V models provide more power. The 40V 15-Inch Attachment Capable String Trimmer fits users who want to share batteries. Choosing the correct voltage ensures you can swap power sources between tools without buying new packs.
-
Select the cutting width
Cutting width determines how much grass you trim in one pass. Narrower 13-inch models, like the RYOBI ONE+ 18V 13-Inch String Trimmer, are easier to maneuver in tight spaces. Wider 16-inch and 17-inch options, such as the RYOBI 16-Inch Carbon Fiber String Trimmer or the 40V 17-Inch Attachment Capable Trimmer, cover more ground faster. If you have a large lawn, a wider cut reduces the time needed. For small yards, a narrower width offers better control.
-
Check shaft compatibility
Decide if you need a standalone tool or an attachment. Some models, like the RYOBI 40V 15-Inch Attachment Capable String Trimmer, feature a straight shaft designed for the EXPAND-IT system. This allows you to attach other garden tools later. The RYOBI 15 in. Expand-It Trimmer Attachment is a bare head for existing tool owners. If you want a complete, ready-to-use device, choose a model with a fixed shaft. Compatibility expands your toolkit over time.
-
Consider motor type
Motor type affects efficiency and runtime. Brushless motors, found in the RYOBI 18V Brushless 15-Inch String Trimmer and the 40V 17-Inch Carbon Fiber String Trimmer, are more efficient than brushed versions. They generate less heat and last longer. This means you get more cutting time per battery charge. If you plan to use the trimmer frequently, a brushless motor is a practical choice. It provides consistent power without the maintenance of carbon brushes.
-
Evaluate weight and balance
Weight impacts comfort during extended use. The RYOBI ONE+ 18V 13-Inch String Trimmer weighs only 7 pounds, making it very light. The 40V 15-Inch Attachment Capable String Trimmer is tool-only at 11 pounds. Heavier models, like the 40V 15-Inch with a 4.0 Ah battery, weigh 13.9 pounds. A lighter tool reduces fatigue. If you have back issues or trim for long periods, choose a lighter model. Always check if the weight includes the battery or not.
Frequently asked questions
Which RYOBI string trimmer is best for existing 40V battery owners?
The RYOBI 40V 15-Inch Attachment Capable String Trimmer is a practical choice for users already invested in the 40V ecosystem. It features a 15-inch cutting width and weighs 11 pounds. The tool-only design allows you to use your existing batteries, saving space and cost. Its attachment-capable shaft adds versatility for other garden tasks.
What is the lightest RYOBI string trimmer option?
The RYOBI ONE+ 13-Inch String Trimmer and Edger is the lightest complete unit at just 7 pounds. It offers a 13-inch cutting width and includes a 4.0 Ah battery. This model is ideal for small yards where lightweight handling is a priority. It also functions as an edger, providing extra versatility for tight spaces.
Does RYOBI offer a string trimmer with a carbon fiber shaft?
Yes, RYOBI offers models with carbon fiber shafts, such as the 40V 17-Inch Carbon Fiber String Trimmer and the 16-Inch Carbon Fiber String Trimmer. These shafts provide stiffness and reduce weight compared to standard materials. The 17-inch model weighs 12 pounds and features a brushless motor, while the 16-inch model offers a wider cut.
Can I use RYOBI attachments with these string trimmers?
Several RYOBI models are attachment-capable, allowing you to use the Expand-It system. The 40V 15-Inch Attachment Capable String Trimmer and the 18V 15-Inch Attachment Capable String Trimmer both support this feature. You can switch between trimming and other tasks like edging or blowing. This versatility is useful for users who want multiple tools from one shaft.
Which RYOBI trimmer has the widest cutting width?
The RYOBI 40V 17-Inch Carbon Fiber String Trimmer and the 40V 17-Inch Attachment Capable Trimmer both feature a 17-inch cutting width. This wider path covers more ground per pass, making it efficient for larger yards. Both models weigh 12 pounds and 11 pounds respectively, balancing power with manageable weight for extended use.
Is there a RYOBI trimmer that includes a battery in the box?
Yes, the RYOBI 40V 15-Inch Attachment Capable String Trimmer (Best Premium) includes a 4.0 Ah battery. The RYOBI 18V 15-Inch Attachment Capable String Trimmer also comes with a 4.0 Ah battery. Most other models are sold as tool-only, requiring you to purchase batteries separately. Check the included battery details before buying if you do not have spare packs.
What is the difference between the 18V and 40V RYOBI trimmers?
The 18V models, like the ONE+ 13-Inch String Trimmer, are lighter and suited for small yards. They weigh as little as 7 pounds. The 40V options, such as the 15-Inch Attachment Capable String Trimmer, offer more power for larger areas. They weigh around 11 to 13 pounds. Choose based on your existing battery ecosystem and yard size.