Beginner · Half a day · Last reviewed September 30, 2026

2x4 workbench plans with a cut list

A sturdy garage or shop bench from 2x4s and one or two sheets of plywood: an upper and a lower 2x4 frame, four legs inside the corners, a plywood top and an optional shelf. Set the length, depth and working height and everything else is recalculated.

Drawing

5 parts · 18 pieces

Top: 72" × 24"
Working height: 36"
Top supported every: 23 1/2"

Parts

hover or tap to find

Cut list

actual sizes

Cut list
Part	Name	Qty	Length	Width	Thick	Cut from	Notes
A	Leg	4	35 1/4"	3 1/2"	1 1/2"	2x4 (1 1/2" × 3 1/2" actual)
B	Long rail	4	72"	3 1/2"	1 1/2"	2x4 (1 1/2" × 3 1/2" actual)	2 per frame
C	Cross rail	8	21"	3 1/2"	1 1/2"	2x4 (1 1/2" × 3 1/2" actual)	4 per frame
D	Top	1	72"	24"	3/4"	3/4" plywood
E	Shelf	1	72"	24"	1/2"	1/2" plywood	notch corners 5" × 3"

Shopping list

from the optimizers

7 ×

2x4 (1 1/2" × 3 1/2" actual), 8 ft

Parts A, B, C · 89% used · fewest possible

Open in cut-list optimizer

1 ×

3/4" plywood, 4 × 8 ft sheet

Parts D · 38% of the sheet area used

Open in sheet optimizer

1 ×

1/2" plywood, 4 × 8 ft sheet

Parts E · 38% of the sheet area used

Open in sheet optimizer

Board feet bought: 37.3 BF nominal (21.8 BF in the finished parts, actual size). Every list allows a 1/8" saw kerf per cut and assumes defect-free stock; tally board feet or price the boards to compare lengths.

Hardware and tools

Hardware and fasteners
Qty	Item and use
64	#9 × 3" construction screws Frames: 2 per rail end; legs: 4 per leg per frame
60	#8 × 1 1/4" wood screws Top and shelf into the frames, about every 8"
1 bottle	Wood glue (optional) Frame joints; skip it if you want to take the top off later

Tools

Circular saw or miter saw
Drill/driver
Square
Tape measure
Clamps
Jigsaw (shelf notches)

Build steps

Half a day

Cut the 2x4s: 4 legs at 35 1/4", 4 long rails at 72" and 8 cross rails at 21". Cut the top to 72" × 24" and the shelf to the same size.
Build two identical frames. Stand the two long rails on edge and set the cross rails between them at 0", 23 1/2", 47", 70 1/2" from one end. Drive two 3" screws through the long rail into each cross rail end. Check each frame is square by its diagonals.
Stand the legs inside the corners of the upper frame, tight against both the long rail and the end cross rail, tops flush with the top of the frame. Fix each with two 3" screws through the long rail and two through the cross rail.
Turn the bench over, slide the lower frame onto the legs and set it 6" above the floor (use a spacer block at each leg so all four match). Screw it to the legs the same way.
Cut a 5" × 3" notch out of each corner of the shelf so it drops around the legs, then screw it to the lower frame every 8".
Stand the bench upright on a flat floor, set the top on the upper frame flush on all sides and screw it down every 8" into the rails. Countersink the heads below the surface so they do not scratch work.

How this workbench is built

Two identical rectangular frames of 2x4s on edge do the work: the upper one carries the top, the lower one ties the legs together near the floor so the bench cannot rack. The legs sit inside the frame corners, so every screw goes through a rail into the face of a leg and the load on the top bears straight down the legs.

Cross rails are spaced so the plywood top is supported at least every 24". At 3/4" thick, plywood between supports that far apart takes hammering without bouncing; for heavy vise work, screw a second layer on top and set the top thickness to 1 1/2".

Choosing the height

Most benches are 34-38" to the worktop. A common starting point is the height of your wrist crease with your arms hanging at your sides: lower suits planing and assembly, higher suits fine work and standing at a vise. Type your number into the working height and the legs are recalculated.

A 2x4 is 1 1/2" × 3 1/2" actual, not 2" × 4". The plan uses actual sizes everywhere.

Where the plan stops being reliable

Screw counts are typical, not a load rating. The bench is intended for ordinary shop use on a level floor; on an uneven garage floor, shim the legs rather than trusting the frame to twist into place.

Deeper than about 30" is hard to reach across; longer than 8 ft needs a joint in the top and a middle pair of legs, which this plan does not draw.

Safety

Wear eye and hearing protection, keep guards on saws, and support long boards and full sheets on both sides of the cut. Pre-drill near board ends so screws do not split the wood. The plan is a woodworking guide, not an engineered design: it has no load ratings, and it does not replace the instructions that come with your tools and fasteners.

About this plan

Designed for LCuts from standard practice for this kind of build; the dimensions, cut list and steps are computed from your inputs by code you can check on the methods page. The shopping list runs every part through the cut list optimizer (boards) and the sheet cut optimizer (plywood), with the same heuristics and lower bounds. Last reviewed September 30, 2026.

Common questions

How tall should a workbench be?

Typically 34 to 38 inches. A common guide is the height of your wrist crease with your arms relaxed at your sides; lower for hand planing and assembly, higher for detail work.

How many 2x4s do I need for a workbench?

For the default 6-foot bench, the shopping list above runs every 2x4 part through the cut-list optimizer and prints the number of 8-foot boards, with saw kerf included. Change the size and the count updates.

What plywood should I use for the top?

Three-quarter-inch plywood is standard. For a heavier, flatter top, screw and glue two layers together (set the top to 1 1/2 inches) or add a 1/4-inch hardboard layer on top as a replaceable work surface.