Understanding your result
The headline is the repair method in a word or two, fill, mesh patch, drywall patch or replace a section, and the line under it says how many repairs and what each one involves. The tiles give the compound, the board and the screws for all of them.
The table shows the size and the method, the patch that goes with it, the compound per repair and in total, the board if any, and the time. The method is chosen by the size of the hole because each method has a size range where it works: spackle shrinks and cracks in large holes, mesh patches bulge over very large ones, and a patch without backing has nothing to hold it.
The shopping list at the bottom is what to buy. What a contractor would charge for the same repairs is on the repair cost calculator. If the hole is where an anchor pulled out, the anchor weight calculator says what to use next time; the compound itself, for larger jobs, comes from the joint compound calculator.
How we calculate this
The size ranges are the common practice of drywall repair, and the patch sizes follow the mesh patches sold in 4, 6 and 8 in squares. The compound per repair is our estimate of what three thin, feathered coats use, and the table says so; it is enough to pick a container, a small tub for fills and a 3.5 quart tub for most patches. Board thicknesses are on the sheet sizes table.
The assumptions behind the numbers
| Assumption | Default | Where it comes from |
|---|---|---|
| Method by size | ≤ 1/2, ≤ 1-1/2, ≤ 6, ≤ 16 in, larger | Common repair practice |
| Mesh patch sizes | 4, 6 and 8 in | Standard patch kits |
| Compound per repair | 0.5 to 48 fl oz | Our estimate for three thin coats |
| Backers | Two strips, 4 in longer than the hole | Common practice |
| Screws | 8 per piece patch, 20 per section | Our estimate |
| Primer | Always | Paint and drywall makers’ guidance |
Assumptions last reviewed October 8, 2026.
The calculator does not repair water damage, which starts with fixing the leak and cutting out soft board; it does not match textures, which is the hardest part of many repairs; and it does not handle plaster walls, which are patched differently. In houses built before 1980 the compound and texture may contain asbestos; test before sanding or cutting large areas. Which repair suits which hole, step by step, is in the guide to drywall repairs, and the sanding without the mess in the sanding guide.
Two worked examples
Six 1 in holes from old anchors, and eight nail pops
- Method: two coats of spackle or compound for each hole
- Pops: a new screw beside each and the old nail reset: 16 screws
- Compound: 6 × 1.5 + 8 × 0.5 = 13 fl oz, one small tub
The pops are the bigger job: a screw beside each, then three passes of filling. Prime the spots before painting.
One 12 in hole where a door handle went through
- Method: cut the hole to a square, add two backers, screw in a 14 in square of new 1/2 in board
- Screws: 8; compound: about 24 fl oz for the tape coat and two finish coats
- A 2 × 2 ft handy panel covers it with spare
Cut the square a little larger than the damage, to clean edges, and check for wires before you cut.
Where to find your inputs
Hole size. The largest dimension of the hole after you trim away loose paper and crushed gypsum.
Count. How many holes of about that size; run the calculator again for a different size.
Pops. Nail or screw heads that have pushed through the paint, usually in rows along a stud.
Board. 1/2 in on most walls, 5/8 in on many ceilings and garage walls; check at an outlet.
Common mistakes
- Spackle in a big hole. It shrinks and cracks. Patch over anything over 1-1/2 in.
- A patch with nothing behind it. Over about 6 in, add backers.
- Thick coats. Three thin coats dry faster and sand less than one thick one.
- No primer. The patch flashes through the paint.
- Cutting blind. Look for wires and pipes before you cut a large hole.
- Patching a wet wall. Fix the leak, dry the wall, cut out soft board.
Questions people ask
- How do I fix a small hole in drywall?
- Holes up to about 1/2 in, such as nail holes and dents, are filled with lightweight spackle, sanded and primed. Up to about 1-1/2 in, two coats of spackle or joint compound. Nothing behind the hole is needed.
- How do I patch a medium hole in drywall?
- Holes from about 1-1/2 to 6 in, such as a doorknob hole, take a self-adhesive mesh patch a couple of inches bigger than the hole, or a California patch (a piece of drywall with its face paper left on as a flange), covered with three thin coats of compound feathered past the patch.
- How do I fix a large hole in drywall?
- From about 6 to 16 in, cut the hole square, screw backer strips of wood inside the opening, screw in a piece of new drywall cut to fit, and tape and finish the edges like a joint. Larger than that, cut back to the studs on each side and replace the section.
- How do I fix a nail pop?
- Drive a new drywall screw about 1-1/2 in from the popped fastener into the stud, pull the board tight, then reset or remove the popped nail and fill both holes. Popped screws are usually reset and a second screw added beside them.
- How long does a drywall patch take?
- A spackle fill can be painted the same day. A mesh patch takes three thin coats, a few hours apart with lightweight compound, about a day. A new piece of board takes a tape coat and two finish coats, a day or two with ready-mix, plus priming.
- Do I need to prime a drywall patch?
- Yes. Compound absorbs paint differently from the surrounding wall, so an unprimed patch shows as a dull spot. Spot-prime the patch with a drywall primer, then paint the whole wall section, corner to corner, for an even finish.