Corded vs cordless miter saw: which one should you buy?
In this guide
- The verdict by use case
- Spec comparison: one corded and two cordless saws
- Power: does cordless keep up?
- Runtime: how long does a battery last?
- Portability and weight
- Cost: compare the kit, not the bare tool
- Who makes Ryobi cordless tools?
- Corded saws and extension cords
- Who should buy which
- Example models to compare
- What you'll need
- Questions people ask
The verdict by use case
| Your situation | Pick | Why |
|---|---|---|
| Saw stays in the garage or shop | Corded | Unlimited runtime, no batteries to buy |
| You cut lots of thick lumber or hardwood | Corded | No stops to recharge on long days |
| You carry the saw room to room for trim | Cordless | No cord to trip on or run to an outlet |
| You work where there's no power | Cordless | Only choice without a generator |
| You already own a battery platform | Cordless | You skip the battery cost |
| You're on a tight budget with no batteries | Corded | Batteries and a charger add to the price |
Spec comparison: one corded and two cordless saws
These are examples to show the kind of numbers to compare. The figures come from the makers' spec pages.
| DeWalt DWS780 (corded) | DeWalt DCS781 (cordless) | Ryobi PBT01B (cordless) | |
|---|---|---|---|
| Blade | 12 in | 12 in | 7-1/4 in |
| Power | 15 A, 120 V | 60V FLEXVOLT battery | 18V ONE+ battery |
| Rated runtime | Unlimited on a good outlet | Up to 675 cuts in 3-1/4 in MDF base molding, or 255 cuts in pressure-treated 4x4 (9.0Ah battery) | Up to 800 cuts (P194 battery; material not stated) |
| Battery in the box | n/a | Not in the bare-tool version | Battery and charger sold separately |
Planned bench test: 3-1/4 in MDF base molding and 2x4 SPF cut on each saw, 3 runs per battery pack, to count cuts per full charge. Results will be added here when the test is done.
Power: does cordless keep up?
A corded saw draws power from the wall for as long as you work. The DeWalt DWS780 has a 15-amp motor.
A cordless saw has to fit the job into one battery. The big ones do this well. DeWalt rates its 60V 12-inch DCS781 for up to 255 cuts in pressure-treated 4x4 on one 9.0Ah battery. That's more than most weekend deck repairs need.
Small cordless saws are a different class. A 7-1/4-inch saw is light and handy for trim. Ryobi's PBT01B crosscuts up to a nominal 2x10. It's not built for 4x4 posts or wide shelving in one pass.
If you're weighing motor types, see brushed vs brushless tools. DeWalt sells the DCS781 as a brushless saw.
Runtime: how long does a battery last?
Makers rate cordless saws in "cuts per charge." The number depends on three things:
- Battery size. More amp-hours (Ah) means more cuts. A 9.0Ah pack runs far longer than a 2.0Ah pack.
- The wood. MDF trim is easy. Wet pressure-treated lumber is hard.
- The blade. A dull or wrong blade makes the motor work harder and drains the pack faster.
Use our battery runtime calculator to estimate your own cuts per charge. For a long job, plan on two batteries: one in the saw and one on the charger.
Portability and weight
Cordless saws are not always light. DeWalt lists the 12-inch DCS781 at 50.9 pounds as a bare tool. You still need a stand or a solid bench. What cordless saves you is the cord, not the weight.
A 7-1/4-inch cordless saw is the one you can carry with one hand. That's why trim carpenters like them for moving from room to room.
Cost: compare the kit, not the bare tool
Many cordless saws are sold as a "bare tool." DeWalt's DCS781B and Ryobi's PBT01B both list the battery as sold separately. If you don't own that brand's batteries, add a battery and charger to the price.
If you already own a platform, cordless gets cheaper fast. For how the platforms compare, see power tool battery platforms.
Who makes Ryobi cordless tools?
Techtronic Industries (TTI) makes and sells Ryobi power tools. TTI states that RYOBI is a trademark of Ryobi Limited, used under license. TTI also owns Milwaukee. For a full look at the brand, read is Ryobi a good brand.
Corded saws and extension cords
A corded saw is only as strong as its cord. A long, thin cord drops the voltage, and the motor bogs and runs hot.
DeWalt's DWS780 manual has a "minimum gauge for cord sets" table. For a 12- to 16-amp saw at 120 volts it calls for:
| Cord length | Minimum gauge |
|---|---|
| Up to 25 ft | 14 AWG |
| Up to 50 ft | 12 AWG |
| 100 ft | Not recommended |
A lower gauge number means a thicker wire. Our extension cord gauge calculator works it out for any tool.
Who should buy which
Buy corded if:
- The saw will stay set up in one spot.
- You cut thick lumber, hardwood or long runs of boards.
- You don't own batteries and want the lowest total price.
Buy cordless if:
- You move the saw between rooms, floors or job sites.
- You already own batteries for the brand.
- You mostly cut trim, molding and 2x lumber.
Example models to compare
These aren't picks. They show the range, from the makers' own specs:
- DeWalt DWS780 (corded, 12 in). 15-amp motor at 3,800 rpm. A shop saw for wide boards.
- DeWalt DCS781 (cordless, 12 in). 60V FLEXVOLT. Rated up to 675 cuts in MDF base molding per 9.0Ah charge.
- Ryobi PBT01B (cordless, 7-1/4 in). 18V ONE+. Rated up to 800 cuts with a P194 battery. Crosscuts a nominal 2x10.
Still deciding which saw type you need at all? Read table saw vs miter saw vs chop saw. For metal, see can a miter saw cut metal. More saw guides are in the cutting hub, and the wood and MDF material page covers blades and cuts for that material.
What you'll need
- Miter saw (corded or cordless): Match the blade size to the widest board you cut
- Extra battery and charger: Cordless only: check if they're in the box
- Heavy-gauge extension cord: Corded only: 12 or 14 AWG per the manual's table
- Miter saw stand or a solid bench: Supports long boards
- Safety glasses and hearing protection: Required by the saw manuals
Key takeaways
- Corded saws run as long as you have power. Cordless saws run as long as the battery lasts, then you swap or recharge.
- Big cordless saws can do a full day of trim. DeWalt rates its 60V 12-inch saw for up to 675 cuts in 3-1/4-inch MDF base molding on one 9.0Ah battery.
- Check what the box includes. Many cordless saws are sold as a bare tool, with the battery and charger extra.
- A corded saw on a long, thin extension cord loses power. DeWalt's manual calls for 14 AWG up to 25 feet and 12 AWG up to 50 feet for a 15-amp saw.
- Already on a battery platform? A cordless saw on the same batteries is the cheapest way in.
Questions people ask
Is a cordless miter saw as powerful as a corded one?
Big cordless saws come close for most home work. DeWalt rates its 60V 12-inch cordless saw for 255 cuts in pressure-treated 4x4 on one 9.0Ah battery. A corded saw still wins on long days of thick cuts, because it never stops to recharge.
Which is better for home use: a corded or a battery miter saw?
If the saw stays in your garage, a corded saw is simple and needs no batteries. If you already own a battery platform and want to carry the saw around, cordless is easy to live with. For trim, shelves and small decks, both do the job.
Who makes Ryobi cordless tools?
Techtronic Industries (TTI) makes and sells Ryobi power tools. It uses the RYOBI name under license from Ryobi Limited of Japan. TTI also owns Milwaukee.
Can I run a corded miter saw on an extension cord?
Yes, if the cord is heavy enough. For a 12- to 16-amp saw at 120 volts, DeWalt's manual calls for 14 AWG up to 25 feet and 12 AWG up to 50 feet, and doesn't recommend 100 feet. A thin cord starves the motor.
How many cuts do you get from one battery?
It depends on the saw, the battery and the wood. Makers rate it in cuts per charge. Ryobi rates its 18V 7-1/4-inch sliding saw for up to 800 cuts with a P194 battery. DeWalt rates its 60V 12-inch saw for up to 675 cuts in MDF base molding with a 9.0Ah battery.
Sources
- DEWALT 60V MAX 12 in. Double Bevel Sliding Miter Saw DCS781B: product page and specs
- DEWALT 12 in. Double Bevel Sliding Compound Miter Saw DWS780: product page
- DEWALT DWS780 instruction manual: extension cord table and safety rules (via ManualsDir)
- RYOBI 18V ONE+ 7-1/4 in. Sliding Compound Miter Saw PBT01B: support page and specs
- Techtronic Industries (TTI): brands and trademark notice
Change log: Nov 6, 2026: Rewritten from the 2023 archive post. Added verdict by use case, manufacturer runtime ratings, the extension cord table and a runtime test plan. Removed unsupported claims (cordless saws 'not for outdoor use' corded, cordless 'safer').
