What Size Blade Does Your Table Saw Take?

On this page (7 sections)

1. What table saw blade sizes are common?
2. How do you check which blade fits your saw?
3. What does the blade diameter change?
4. What is the difference between diameter, arbor, and kerf?
5. Do tooth count and blade type affect fit?
6. What should you check before buying a replacement blade?
7. Which table saw blade size should you choose?

Most table saws take an 8-1/4 inch or 10 inch blade, but the right size depends on the saw’s manual and the blade diameter, arbor, and permitted cutting depth. Check those details before you buy.

Start with the saw’s model number and manual, then verify the blade diameter and arbor hole. Tooth count and kerf matter when choosing how a blade cuts, but they don’t tell you whether it fits.

What table saw blade sizes are common?

8-1/4 inch and 10 inch blades are common on portable and home shop table saws. The size refers to the blade’s outside diameter, not its arbor hole or cutting width.

Some compact saws use an 8-1/4 inch blade, while many jobsite, contractor, and hybrid saws use a 10 inch blade. These are common patterns, not a fit guarantee for any particular model.

If you’re comparing saw types, our guides to 8-1/4 inch table saws and woodworking table saws for a home shop explain how saw size relates to the work you plan to do.

How do you check which blade fits your saw?

Use the saw manual to confirm the blade diameter and arbor size. Also check the maximum blade diameter, any allowed minimum diameter, and any requirements for the blade, guard, and riving knife.

Look for the model number on the saw’s label or housing. Search the manufacturer’s manual using that exact model number, since similar saws can have different blade requirements.

Before installing a blade, unplug the saw and follow its manual’s blade-change steps. Confirm the blade clears the throat plate and that the guard and riving knife fit the blade as intended.

A blade that shares the saw’s diameter can still have the wrong arbor hole. Don’t force a fit or improvise an adapter; use only an arrangement the saw manufacturer permits.

What does the blade diameter change?

Blade diameter affects the saw’s maximum cutting depth. The saw’s design determines how much of that depth is usable, so check the manual for its stated capacity.

A larger blade isn’t an upgrade by itself. It may not clear the saw, fit beneath the guard, or work with the riving knife, and the motor and arbor are designed around a permitted blade range.

Can you use a smaller blade than the saw’s usual size?

Use a smaller blade only if the manual permits it. A smaller diameter can reduce how deep the saw can cut and may change how the blade lines up with the guard or riving knife.

The Diablo 8-1/4 inch blade has 60 teeth and is described for fine finish cuts in wood, plywood, and melamine. Its thin kerf is intended to reduce resistance on portable saws.

The FOXBC 8-1/4 inch blade also has 60 teeth, a 5/8 inch arbor, and a stated 0.079 inch kerf. Verify that its arbor and diameter match your saw before choosing it.

Neither blade is a fit for a 10 inch saw simply because its arbor matches. For more on that size choice, read 8-1/4 inch vs 10 inch table saws.

What is the difference between diameter, arbor, and kerf?

Diameter is the blade’s outside measurement, arbor is the center hole, and kerf is the width of the cut. Check each one separately against the saw and the job.

Diameter affects cutting depth and clearance. Arbor size determines whether the blade mounts correctly on the saw’s shaft.

Kerf is the width of material removed by the blade. A thin-kerf blade removes less material per cut, but you should still confirm the saw is designed to use that blade and that it works properly with the riving knife.

For a closer look at blade width, see thin kerf vs full kerf table saw blades. Don’t treat kerf as a substitute for checking diameter or arbor.

Do tooth count and blade type affect fit?

Tooth count and blade type affect the cut, not the blade’s basic diameter. Choose them after you’ve confirmed the saw accepts the blade.

A 40-tooth blade may suit a different mix of cutting tasks than a higher-tooth finishing blade. Tooth geometry and blade design also affect the intended cut, so follow the blade maker’s guidance for the material and saw.

The DeWalt DWA11040 is a 10 inch, 40-tooth blade with carbide teeth and tooth geometry designed for accuracy, according to DeWalt. It’s an option when your saw accepts a 10 inch blade and you want a fine-finish blade.

The Diablo combination blade is 10 inches with 50 teeth and is designed for ripping and crosscutting wood and wood composites. Its combination layout may suit a reader who wants one blade for both tasks.

For plywood, choose a blade intended for that material and cut quality. Our guide to plywood blades for table saws covers that choice.

What should you check before buying a replacement blade?

Confirm the manual’s diameter, arbor, and compatibility requirements before ordering. Then compare kerf, tooth count, and blade type with the cut you need.

Use this quick check:

1. Find the exact saw model and its manual.
2. Confirm the permitted blade diameter and arbor size.
3. Check the manual’s guidance on kerf and blade type.
4. Confirm the guard and riving knife are compatible.
5. Choose tooth count and blade design for your work.

If the manual is missing, search the manufacturer’s support site by the exact model number. If the model’s permitted blade sizes remain unclear, ask the manufacturer before installing a blade.

Which table saw blade size should you choose?

For table saw blade sizes, choose the diameter and arbor specified by your saw’s manual first, then pick tooth count and blade type for your cuts. An 8-1/4 inch blade suits only a saw designed to accept it, and the same rule applies to a 10 inch blade.

Pick the Diablo or FOXBC 8-1/4 inch blade if your saw accepts that diameter and the blade’s arbor. Pick the DeWalt or Diablo 10 inch blade if your saw accepts 10 inches and the blade fits its arbor.

Before changing blades, read how to align a table saw blade and fence and check the saw’s safety features. When you need to choose a new saw as well, start with the table saw choosing and setup guide.

Frequently asked questions

How do I know what size blade my table saw takes?

Check the saw’s manual or the label on the saw for the permitted blade diameter and arbor size. If you can’t find either, look up the exact model’s instructions before buying.

A blade that looks close in diameter may still have the wrong arbor or exceed the saw’s limits.

Can I put a 10 inch blade on an 8-1/4 inch table saw?

Only if the saw’s manufacturer allows a 10 inch blade. A larger blade can exceed the saw’s designed limits or create clearance and safety problems.

Use the diameter specified for your saw, and don’t assume that removing or changing a guard makes a larger blade safe.

Does arbor size matter on a table saw blade?

Yes. The blade’s arbor hole must fit the saw’s arbor as intended, with any specified washer or flange.

Check the manual for the required arbor size and any allowed knockout or adapter.

Don’t force a blade that doesn’t fit or use an improvised bushing.

Can I use a smaller blade on my table saw?

A smaller blade may fit some saws, but it reduces maximum cutting depth and can affect guard or riving-knife fit. Check the saw manual for permitted blade diameters and setup requirements before using one.

The blade must also match the arbor and clear the throat plate.