10-Inch vs 12-Inch Miter Saw: Is Bigger Always Better?

One of the most common questions we’re asked here at Miter Saw Judge concerns which size miter saw is the wisest addition to your workshop.

Since everyone has different needs, we’re not going to give a clear-cut right or wrong answer.

Today, though, we’ll examine the issue of 10-inch vs 12-inch miter saws so you can see which would work best for you depending on what you want to do with your saw.

Although you can get compact 7 ¼-inch or 8 ½-inch miter saws and even a 15-incher in the form of the mighty Hitachi C15FB, by far the most popular sizes are the 10-inch and 12-inch.

Not everyone has the same budget or the same projects in mind so, rather than offering a straight-up comparison of a 10-inch vs 12-inch miter saw by category, we’ll give you a snapshot of where each saw stands and falls so you can determine which would work best for you.

10-Inch Miter Saws

Generally the default choice for anyone starting out down the woodworking route, we’ll look at the pros and cons of the standard 10-inch miter saw…

What We Like About 10-Inch Miter Saws


As with pretty much any power tool, the more you ramp up the size, the more you’ll pay.

10-inch miter saws are cheaper than a comparable 12-incher. Clearly, there are many extremely expensive 10-inch saws and a number of budget 12-inch saws but we’re talking about like for like.

You’ll save money straight off the bat opting for a 10-inch miter saw.


You’ll generally get more pace with a 10-inch miter saw.

Since the blades have a smaller radius, they’ll spin more rapidly yielding a smoother and more accurate cut.

Not only will you get more work done in less time – as long as the project is suitable for a 10-inch saw, of course – but the results will be superior into the bargain.


Comparing blades of similar quality, you can expect to pay only half as much for a 10-inch blade as a larger blade with the same number of teeth. This cost soon starts to mount up if you start building a collection of blades.

Sharp blades are crucial if you’re serious about your woodworking and it’s costlier to have a 12-inch blade sharpened so, once more, you’ll save money with a 10-inch saw and you’ll save on an ongoing basis.

Setting the price issue to one side, it’s also much easier to find 10-inch blades and you’ll enjoy a better selection. At a push, you can even press the blade from your table saw into commission.

In terms of cutting, you’ll need fewer teeth on a 10-inch blade to get a cut rivaling a 12-inch blade.

In all respects bar raw cutting capacity, the 10-inch miter saw comes up trumps on the blade front.

Wobble and Deflection

The question of wobble and deflection is one that polarizes opinion…

Some argue that larger blades will deflect more from the workpiece causing wobbling that will negatively impact accuracy.

Other purists claim that this is only the case if you buy cheap and lightweight blades for your 12-inch saw.

Beyond this difference of opinion, wobble won’t be too much of a problem if you’re engaged in framing work but if you plan to carry out a lot of intricate interior trim work, it’s certainly worth your while considering this point.

Portability and Flexibility

It might seem a statement of the obvious, but if we’re talking about the chief advantages of a 10-inch miter saw, size and versatility rate a mention.

10-inch saws take up less real estate in your workshop, you can transport them from home to jobsite with relative ease and you can stash them away in fairly small spaces if required.

As with all elements of choosing between a 10-inch and a 12-inch miter saw, double down on your exact requirements as only you know how important it is to have a portable and more adaptable saw.

What We Don’t Like About 10-Inch Miter Saws

Cutting Capacity

The leading drawback with a 10-inch miter saw is, evidently, its reduced cutting capacity when set against its big 12-inch brother.

You’ll still comfortably be able to cut up to 6 inches of material but you’re not going to come close to the capacity of a 12-inch saw.

If you mainly intend to work with 4x4s or smaller pieces of lumber, this might not be problematic. If, on the other hand, you have some large scale and ambitious cutting projects up your sleeve, bear in mind the diminished cutting capacity of a 10-inch saw.

10 inch vs 12 inch miter saw

12-Inch Miter Saws

If you want a more robust miter saw, check out the principal advantages and drawbacks of 12-inch saws so you can see if this size of saw is worth the investment or an unnecessary expense…

What We Like About 12-Inch Miter Saws


The leading plus point of a 12-inch miter saw is the power kicked out by the 15-amp motors. Again, we’re talking about saws of the same quality here not a cheap 12-inch pitted against a 10-inch Festool.

Since you can sometimes also use a 10-inch blade on a 12-inch saw, that way you’ll benefit from both the uprated amperage and a higher velocity for a double win when it comes to power. This is not the case with all 12-inchers but it’s a fairly widespread feature. Not only will you get a greater RPM but you’ll also be able to handle finer cuts with more finesse using a 10-inch blade.

Large Projects

The power alongside the increased size allows you to work confidently with much larger workpieces when you’re using a 12-inch miter saw.

The majority of 12-inch saws will slice their way through pieces 12 inches wide with 2 cuts allowing you much more scope of work. You’ll be able to cut 4x6s with just one pass.

12-inch saws are ideal for any harder materials like plywood and they also come into their own for cutting down laminated lumber into smaller bits.

Bear in mind, though, that you will still need to make multiple cuts with really huge workpieces so a 12-inch saw is not a magic bullet.


The size and rugged nature of 12-inch miter saw invariably translates to a more durable unit.

As with every element of this head-to-head, this assumes saws of a similar price and quality ratio.

What We Don’t Like About 12-Inch Miter Saws


12-inch miter saws are more expensive due to their sheer size and increased functionality.

Throw in pricier blades and a stiffer power bill due to the extra electricity you’ll use and this is one of the main downsides to a bulkier saw.


As mentioned, 12-inch blades understandably cost more than their 10-inch counterparts.

12-inch blades can also be tough to find and you won’t get the same breadth of choice either.


What you need to keep firmly in mind is getting the right power tool for the right job rather than seeking a one-size-fits-all answer to the issue of the 10-inch vs 12-inch miter saw.

If you have a single substantial project in mind and base your buying decision purely on the fact a 12-inch miter saw will cut some 4x6s in a single pass then never do anything but fine woodworking after… Well, you’re likely to end up with an expensive workshop ornament.

For anyone consistently undertaking ambitious, heavy-duty endeavors, on the other hand, it would be a mistake to laser in on buying a compact saw unlikely to be fit for purpose.


When you’re thinking about whether to get a 10-inch miter saw or a 12-inch miter saw, intended usage should be uppermost in your buying decision. If you take the above factors into account and you frankly analyze your personal requirements, you’ll end up with the best miter saw without too much trouble.

10 thoughts on “10-Inch vs 12-Inch Miter Saw: Is Bigger Always Better?

  1. 10 inch sliding mitre saw is more useful in the shop where as 12 inch is better for construction projects!

  2. For the same RPM, a 10 in blade will move SLOWER than a 12 in one. Simple math/physics.
    Because of that fact, they make them so that the 12 in ones usually spin at lower RPM, and then achieve roughly the same speed at the cutting edge.

    • Kita,
      It was annoying to me as well to read from many sources that Ø 10″ blade is faster than the Ø 12″ and as you pointed out, that is not the case. Larger radius would have larger tangential velocity at the contact with the wood. On the other hand if you compare the both different diameters with the same number of teeth, the pitch of the teeth will obviously be larger on a Ø 12″ blade. Turns out that the teeth on the Ø 10″ blade would pass 20% more than the Ø 12″ blade teeth. So technically what the work piece experiences is Ø 10″ is slower but finer, and Ø 12″ is faster but coarser

  3. There are some major issues with this article. The blade rpm of a 10 inch is the exact same as 12 inch on a direct drive as it is determined by the hz of the power supply. They can be geared differently for belt or gear driven. So a 10 inch saw might see 4800 rpm (9943 feet per minute of blade) and a 12 inch saw will see 3800 commonly(11932 feet per minute of blade) (both rpm speeds were taken from dewalt and bosch websites). The 12 inch blade will have a faster blade speed of almost 20%. Plus the extra mass doesn’t slow down as much when it enters the wood . DeWalt even makes a 4000rpm 12 inch(12560fpm) and that would be MUCH faster then a 10 inch. Also, the bigger blades last substantially longer. I personally notice about 30% to 40% more life. A 12 inch saw also has a bigger distance to clear the shavings in teeth and cool down. I assume this is part of the reason they last longer. The ONLY advantage a 10 inch saw has is portability. Don’t use table saw blades on a miter saw UNLESS you have researched the tooth pitch and other blade dynamics as some blade are meant to take bigger bites which means your compound miter saw will jump forward REALLY HARD when cutting.

  4. I can really speak to the durability of the 12″ versus the 10″. I’ve had a couple of decent 10″ miter saws, but they ended up folding over time. After my second gave up the ghost I decided I might as well splurge and get a nice 12″, and it’s made all the difference. All I’ve had to replace on this one has been the blade once or twice throughout the years.

  5. YOU CAN USE A TABLE SAW BLADE FOR YOUR MITER SAW?!?! No way!! That’s honestly really cool. Can it work the other wy around too? I just got this kickass carbide tipped blade for my miter saw and I’d love to try it on my table saw!

  6. I just got my DWS779 and I love it. I’ve always used Dewalt and I wouldn’t change to another brand if you paid me to. I’ve only had to buy three since 1985.

  7. I really liked this article, and the comments. I’ve been struggling trying to decide between a 10″ slider and a 12″ compound. My mind was made up after the article, but before the comments. Now I’m torn again….


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