Internet #205806375

Model #P507

Store SKU #338757

Store SO SKU #1001238420

18-Volt ONE+ Cordless 6-1/2 in. Circular Saw (Tool Only)

  • Cordless design provides optimal portability
  • Includes: 6-1/2 in. Carbide Tipped Blade and Blade Wrench
  • Over 175 ONE+ Tools – All Work With Any RYOBI ONE+ 18V Battery
  • See More Details

Frequently Bought Together


Product Overview

18-Volt Battery Platform

18-Volt Battery Platform

No matter your interests or skill level, we can power it. With cordless lithium-ion technology, RYOBI can power you through all types of projects from drilling, driving, cutting, and fastening, to lighting, plumbing, cooling, and rocking, to trimming, edging, mowing, and clearing – and so much more.

World’s Largest 18V Tool System

World’s Largest 18V Tool System

RYOBI gives you the ultimate in versatility and selection to get the job done. From household tasks to the jobsite to recreation and everything in between, there is a ONE+ product for you.

RYOBI ONE+ Delivers More


RYOBI has never changed – and will never change – the 18V ONE+ battery platform, meaning our newest products & batteries fit the original RYOBI tools and batteries from 1996. RYOBI ONE+ is the system that delivers more.

Power Tools

Power Tools

Whether it’s a weekend DIY project or a full remodeling job, RYOBI ONE+ has you covered with all the tools you need to get the job done.

Lawn & Garden Equipment

Lawn & Garden Equipment

From trimming and edging, to mowing and clearing, knock out lawn care with one battery platform that does it all.

Air Tools

Air Tools

Make your next nailing, stapling, inflating, and deflating jobs a breeze with cordless air tools from RYOBI ONE+.

Lifestyle Products

Lifestyle Products

Enjoy our expansive lineup of lifestyle, craft, and specialty tools including audio equipment, lights, fans, vacuums, soldering irons, and much more!



Put the power of 18V ONE+ at your fingertips from the cordless system that delivers more.

18V Lithium

18V Lithium

Lithium-ion battery technology with fade-free power and Extreme Weather Performance to withstand the toughest conditions.

3 Year Limited Warranty

3 Year Limited Warranty

RYOBI Portable Power Tools and Bench/Stationary tools purchased on or after 1.1.11 are covered by a 3-year warranty.

World’s Largest

World’s Largest

The RYOBI 18V ONE+ System gives you the ultimate in versatility and selection.

100% Compatible

100% Compatible

All RYOBI 18V tools and batteries are 100% forwards and backwards compatible. Any RYOBI 18V tool works with any of our 18V batteries.

90 Day Guarantee

90 Day Guarantee

Buy with confidence with our 90 day no-risk satisfaction guarantee.

RYOBI introduces the 18-Volt ONE+ 6-1/2 in. Circular Saw, an upgraded tool that provides corded performance in a cordless tool. The 18-Volt ONE+ 6-1/2 in. Circular Saw has a 40% more powerful motor compared to its previous model (P506). The 24 Tooth Ultra-Thin kerf carbide-tipped blade allows for fast, clean cuts. Best of all, it is part of the RYOBI ONE+ System of over 175 Cordless Tools that all work on the same battery platform. Backed by the RYOBI 3-Year Manufacturer's Warranty, the 18-Volt ONE+ Circular Saw includes a 6-1/2 in. 24 Tooth Ultra-Thin kerf carbide-tipped blade, blade wrench, and operator's manual. Battery and charger sold separately.
  • California residents
  • 40% more powerful motor provides corded performance with cordless convenience compared to previous model (P506)
  • Up to 35% increased cut capacity compared to previous model (P506)
  • 24-tooth ultra-thin kerf carbide-tipped blade for fast, clean cuts
  • 0°-56° bevel cut capacity allows user the ability to cut the most common angles
  • Front pommel handle with overmold for 2-handed operation
  • Left side blade for better cutline visibility
  • On-board wrench storage for fast, convenient blade changes
  • Improved GRIPZONE overmold for optimum grip and user comfort
  • Ergonomic design increases user comfort during prolonged use
  • Part of the RYOBI ONE+ System of over 175 Cordless Tools
  • 3-year manufacturer's warranty
  • Includes: (1) P507 6-1/2 in. Circular Saw, (1) 6-1/2 in. 24-tooth ultra thin kerf carbide-tipped blade, (1) blade wrench, and operator's manual
  • Battery and charger sold separately
  • *Stem Pack Style Battery
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Name14 Amp 7-1/4 in. Circular Saw with Laser18-Volt ONE+ Cordless 6-1/2 in. Circular Saw (Tool Only)15 Amp Corded 7-1/4 in. Circular Saw with EXACTLINE Laser Alignment System, 24T Carbide Tipped Blade, Edge Guide and BagM18 18-Volt Lithium-Ion Cordless 6-1/2 in. Circular Saw (Tool-Only)
Save $20.00 (17%)
Cordless/ CordedCordedCordlessCordedCordless
Blade Diameter7-1/46-1/27-1/4
Power Tool FeaturesDepth Adjustment,Keyless Blade Change,Laser Guide,Spindle LockDepth Adjustment,Keyed Blade ChangeDepth Adjustment,Keyed Blade Change,Laser Guide,Spindle LockDepth Adjustment,Keyed Blade Change,Spindle Lock
Blade Diameter (in.)7-1/46-1/27-1/46-1/2
Saw Drive TypeSidewinderSidewinderSidewinderSidewinder
Blade LocationRightLeftRightLeft
Cuts ThroughWood Wood
Voltage (volts) 18 18
Batteries Included No No
Number of Total Batteries Included 0 0
View ProductView ProductView ProductView Product



Blade Diameter
Maximum Cut Depth @ 90 Deg.
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Batteries Included
Battery Amp Hours
No Battery
Battery Power Type
Lithium Ion
Battery Size
Tool Only
Tool Only
Bevel Capacity
Blade Diameter (in.)
Blade Location
Charger Included
Charger Not Included
Color Family
Construction Material
Acrylonitrile Butadiene Styrene (ABS)
Cordless Tool Type
Circular Saw
Cordless/ Corded
Depth Adjustment
Blades Included
Included Accessories
Allen Key/Wrench,Blades
Maximum Cut Depth @ 45 Deg.
Maximum Speed (rpm)
Motor Type
Number of Tools Included
Number of Total Batteries Included
Power Tool Features
Depth Adjustment,Keyed Blade Change
Product Weight (lb.)
Saw Drive Type
Tools Product Type
Power Tool
Voltage (v)
Voltage (volts)

Warranty / Certifications

Manufacturer Warranty
3 Years

Questions & Answers


Good for left handers?

Asked by Kdav February 13, 2017

Picture the saw in your hands, dominant hand on trigger NON dominant hand on upper grip. Now imagine looking at the blade, if the elbow of your non dominant arm is blocking your view of the blade you need a saw with the blade on the other side, or learn to use the saw the other way. This is a left handed saw. If you try to use it right handed you won't be able to see your cut and it will dump sawdust onto you.

Will a 7" blade fit on this saw?

Asked by panhandle July 22, 2015

Where have you found a 7 inch blade? They are typically 7 1/4. And NO, a standard blade will not fit on this saw. You'll also want to purchase the correct blade for the direction of the saw so the arrows show (Wormdrive shows on the left of the saw, but I've never seen a wormdrive in 6 1/2 inch) So, you'll be getting this special blade for this saw. You could flip the blade, putting the arrows & writing so you can't see them, as long as the rotation is correct (teeth pointing in the direction the motor turns, or the front.)

is there a "right side blade " available in this saw? I am all the way right handed and have trie...

Asked by cookingjoe1 August 17, 2018

No such thing as right or left saw blades. Saw blade orientation depends on motor rotation direction. Very important to follow manufacturers operating / blade install instructions. I think your thinking of right or left hand 'drive' skill saws. Don't know of any battery powered left hand drive skill saws.

Does this work with a power cord when the battery is not in?

Asked by Kevin June 17, 2019

No, it’s strictly cordless.

The 2.0 batteries only last a few minutes on this saw. is it the saw that's the issue or do I ne...

Asked by Hornhiyo July 1, 2019

A 2.0 battery will die quicker on a circular saw, they use a lot of juice fast. I’d recommend a 4.0 or higher. Also, switch out the manufacturer’s blade for a higher end blade, don’t cost much and will help with battery life as it’ll cut faster and easier.

how deep of cut will this saw make

Asked by dgw April 25, 2016

Not deep enough, buy the 7 1/2' saw.

Will a stronger 18v battery let teh saw cut thicker plywood and for longer? I bought a base model...

Asked by Cata November 16, 2018

Hi Cata, The higher amp batteries will give you longer run time. It will not let you cut past the maximum thickness it is allowed to cut. Thanks for asking. Greg

Is this meant for paper or maybe balsa wood at best? So far it has bound and stopped on every cut...

Asked by Dave June 28, 2020

Thank you Dave for your inquiry. It sounds that you may be having an issue. Please contact RYOBI customer care for assistance at 800-525-2579. ~best regards, Ashley

What type of a saw do I need to cut shapes?

Asked by Fiberartist November 3, 2016

Jigsaw is best.

Is there a guide cutting board or something for this Saw?

Asked by JustAsking February 3, 2019

There is an edge guide kit available, I bought mine at - part number 201985001, it actually cost just a few dollars. It works good, I beveled cut a couple of 1x6x8 at 45 deg. angle to frame around the outside front door, it looks good.

18-Volt ONE+ Cordless 6-1/2 in. Circular Saw (Tool Only) - page 2

Customer Reviews

  • 1640 Customer Reviews
  • 4.6 out of 5 stars overall
90% of customers recommended.
Overall Ratings
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Tuscaloosa Al
6 1/2” circular saw
Customer review from logo
Received this for my birthday. What man don’t need a saw without a cord finding myself all the time.
Was this helpful?
Light weight but plenty powerful for occasional home projects. I...
Light weight but plenty powerful for occasional home projects. I use with 4A battery and 40 tooth carbide finishing blade for smooth cuts - an efficient combo. I built work bench with saw.
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The only Ryobi tool so far I’ve been disappointed with
I have a ton of Ryobi tools and so far, this is the only one I’ve found to be a big disappointment. I used this to renovate a staircase in my house and needed to cut off 1.5 inch stair nosings. The saw is highly underpowered and would freeze up constantly. It’s fine for cutting down a 2x4 but for ripping down a 2x10 or even a 2x10 crosscut it really can’t handle it even with a better blade. Maybe the brushless version is better, but I’ll be going with another brand for the next circular I buy.
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Great Circular Saw for Beginners..!!
Customer review from logo
It is my 1st circular saw and at first i was a little skeptical about the power of it, but they did the job !! And i was able to finish the fence without any problems!!
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Batesville AR
6 1/2 Ryobi saw
Customer review from logo
Works great, I always take stock blade off and replace with Diablo blade.
Was this helpful?
Has good power compared to my other saw, surprising light...
Has good power compared to my other saw, surprising light weight and is comfortable I did however get a different blade because I cut plywoods with my circular saws and the original 24 tooth blade gives chip out
Was this helpful?
Great portable circular saw
I have had this saw for about 4 years now and it has been great. It's nice to have the versatility to take this with you to work on projects even away from home. The saw is very lightweight and built very nicely. The trigger safety on this is a great feature. It keeps you from accidentally running the saw. There hasn't been anything that I dislike about this saw so far. It does meet my expectations. Please hit the thumbs up if this was helpful.
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Great saw
I was tired of grabbing an extension cord and my heavier corded circular saw everytime I needed it outside the shop. I have many other Ryobi tools so I picked this one up and was not disappointed. I used it to cut the 2x4s for the gate to my pool deck as well as the spindles along the stair rails
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Great Saw.
I love it You cant go wrong for $69, cuts so nicely.
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When I first put in the battery, all I have is the 1.3 amp hr. battery that came with my 18 v drill and pulled the trigger I was unimpressed . It seemed to be very weak and lacking in power but, then I cut a piece of 3/4 plywood for a flooring project I was working on and it cut like butter and fast no bogging down. The battery was only half charged but for as many cuts as I made it was more than Adequate for the job. I didn't use the blade that came with the saw but Instead I used a Diablo demon blade.Wow this saw is Awesome. Can't wait to see how much better it will be with a new 3 or 4 amp battery. Iam Impressed. Great Saw.A++++
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