Best 1/4 Dado Router Bit (2026): 5 Picks for Clean Grooves

Specs compared

Specifications are manufacturer rated, as published on each listing and collected 23 October 2026.

Best 1/4 dado router bit buying guide

Shank size

Four of the five picks use 1/4-inch shanks. The Freud 91-102 set uses 1/2-inch shanks, so it needs a router with a 1/2-inch collet. Check your router’s collet size before choosing between the single-bit picks and the six-bit set.

Cutting diameter

The picks cover cutting diameters from 1/4 to 3/4 inch, and the Freud 91-102 set reaches 1 inch. The MEIGGTOOL set gives five widths in one box, while the Freud 90-106 set matches the true thicknesses of undersized plywood panels. Match the cutting diameter to the groove width your project needs.

Carbide and coating

Every pick lists carbide blades or inserts. The MEIGGTOOL set states C3 micro grain carbide, KEENTECH states tungsten carbide on a high-strength steel body, and both Freud sets state a Perma-SHIELD non-stick coating against heat and pitch build-up.

One bit or a set

A single bit suits one repeated groove width. A set covers several widths in one box and usually adds a storage case. Only the MEIGGTOOL set states a concrete warranty term, so weigh that if a written term matters to you.

Project Match

Pair the pick with the project, using only what each listing states:

• Plywood cabinet dadoes: Freud 90-106, with bits matched to true undersized plywood thicknesses of 1/4, 3/8, 1/2 and 3/4 inch.
• Several groove widths in one box: MEIGGTOOL 5-piece set, with 1/4 to 3/4 inch cutting diameters and a stated 1 year warranty.
• Single 3/4-inch grooves: FivePears or KEENTECH, both 1/4-inch-shank carbide bits with 3/4-inch cutting diameters; FivePears adds a stated anti-kickback design, KEENTECH adds a storage case.
• Full straight-bit coverage for a 1/2-inch collet: Freud 91-102, six bits from 1/4 inch to 1 inch.

How the scores add up

Each bit is scored on performance, build, value, safety and warranty, with the weights published on our How We Pick page. A spec the listing does not publish scores nothing.

Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.

FAQ: lasers and CNC

What is a dado bit?

A dado bit is a straight router bit used to cut dadoes, the flat-bottomed grooves that hold shelves and panels. The bits in this guide are straight bits with cutting diameters from 1/4 to 3/4 inch, made to cut grooves in wood and panel materials.

What router bit should I use for a dado?

Use a straight bit whose cutting diameter matches the groove width you need. For a single repeated width, a single bit such as the FivePears or KEENTECH 3/4-inch bit works; for several widths, a set like the MEIGGTOOL five-piece or a Freud set covers more sizes.

Can I cut dadoes on a CNC router with a straight bit?

The FivePears and MEIGGTOOL listings state use on CNC and automatic routers as well as handheld and table-mounted routers. The KEENTECH listing states handheld and table-mounted routers, and the Freud sets list handheld and table-mounted use.

Does shank size matter?

Yes. Four picks use 1/4-inch shanks. The Freud 91-102 set uses 1/2-inch shanks, so it needs a 1/2-inch collet and does not fit a router that only takes 1/4-inch shanks.

Related: the CNC tooling hub, our best dado bit for CNC, best dado bit for plywood and dovetail vs dado bit for CNC. Also see our best dado bit for CNC under 40 and best compression router bit.