Calculate pocket hole spacing for a board: end holes plus evenly spaced middle holes.
Drill setup
Usage Tip
Keep holes back from the very end so the screw does not blow out; clamp the joint before driving to stop it from shifting.
middle holes fill the span at the target spacing
The result is the total hole count and the actual even spacing.
How many pocket holes do I need?
Pocket holes are forgiving, but spacing them by eye leads to a joint that either wobbles or wastes screws. The rule of thumb is a hole every 6 in for general work, with the first and last hole about 2 in from each end. This calculator takes your board length and spacing, places the holes evenly between those end offsets, and draws the layout so you can see exactly where to clamp the jig before you drill.
Pocket hole spacing guide
Closer spacing means a stiffer joint and more screws; wider spacing is faster and fine for light loads. Pick by how hard the joint will work.
| Duty | Spacing | Use |
|---|---|---|
| Light duty | 8 in | Small trim, light frames, backs |
| Standard | 6 in | Most furniture and woodworking |
| Heavy duty | 4 in | Load-bearing rails, workbenches |
| Cabinet face frame | 4 to 6 in | Face frames and cabinet joinery |
Material thickness and screw length
Set your jig drill guide and the bit stop collar to the material thickness, then match the screw to it. Too long and the screw blows through the face; too short and the joint has no bite.
| Material thickness | Pocket hole screw |
|---|---|
| 1/2 in | 1 in |
| 5/8 in | 1-1/4 in |
| 3/4 in | 1-1/4 in |
| 1 in | 1-1/2 in |
| 1-1/2 in | 2-1/2 in |
Use coarse-thread screws in softwood and plywood, fine-thread in hardwood.
End offset: how far from the edge?
Keep the first and last pocket hole about 2 in from each end. Closer than roughly 1-1/2 in risks splitting the end of the board; farther in leaves the corners of the joint unsupported. The calculator places the end holes at your chosen offset and spreads the rest evenly between them.
Project examples
Using standard 6 in spacing with a 2 in end offset.
| Project | Length | Pocket holes |
|---|---|---|
| Cabinet rail | 24 in | 5 |
| Shelf | 36 in | 7 |
| Table apron | 48 in | 9 |
| Bench rail | 72 in | 13 |
Frequently asked questions
How far from the edge should pocket holes be?
Typically about 2 in from each end. Much closer can split the board; much farther leaves the corner of the joint weak.
What spacing should pocket holes use?
Generally 6 in apart for most woodworking. Drop to 4 in for load-bearing joints and open up to 8 in for light-duty work.
Can pocket holes be too close together?
Yes. Overcrowding weakens the material between holes and wastes time and screws without adding meaningful strength.
How many pocket holes do I need?
It depends on board length, thickness and load. As a guide, divide the length by your spacing and add one. A 36 in rail at 6 in spacing needs about 7.
What screw length for 3/4 in material?
A 1-1/4 in pocket hole screw is standard for 3/4 in stock. Set the jig and bit collar to 3/4 in.
Coarse or fine thread?
Coarse for softwood and plywood, fine for hardwoods like oak and maple.
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Spacing and screw guidance are general starting points. Joint requirements vary with material, grain and load; for structural work follow your jig and fastener manufacturer instructions and test a sample joint.