No depth to worry about, which makes this the simplest calculation in the silo. The complication is that sod comes on pallets of fixed coverage and it is perishable, so ordering is less forgiving than it looks.
Sod goes where grass goes, which is less of your yard than the yard's total size. Subtract the house footprint, the driveway, paths, patios, decks, sheds and any planted bed that is staying.
The practical approach is to split the lawn into rectangles and triangles, measure each, and add. Front lawns are often close to rectangular. Back yards rarely are, and the area around a patio or a shed is usually where the awkward shapes live.
For a curved lawn edge, approximate with straight segments or with a rectangle at the average dimensions. Sod is cut to fit on site, so a few square feet of imprecision on a curve is absorbed by the waste allowance rather than causing a problem.
Do subtract large permanent features. Do not bother subtracting individual trees, since you cut around them from a full piece anyway and the offcut is waste rather than a saving.
Sod is sold by the pallet, and this is where the useful number lives.
A standard pallet most commonly covers 450 or 500 square feet, though it varies by supplier and grass type, so confirm before calculating. Individual slabs are typically 16 by 24 inches, which is 2.67 square feet each.
So a 2,000 square foot lawn needs four pallets at 500 square feet coverage, or four and a half at 450. Suppliers will usually sell part pallets, but the price per square foot is worse and delivery is the same either way.
The difference between 450 and 500 square feet per pallet is over ten percent. On a large lawn that is the difference between ordering enough and being half a pallet short, and sod is not something you can top up next week from the same batch.
Add around 5 to 10 percent for a simple rectangular lawn. Push toward the higher end, or beyond it, when the lawn has curved edges, tree rings, garden beds to cut around, or a lot of separate small areas.
The reason is that sod is laid in strips from full pieces, and every curve means cutting a straight piece to a curved line. The offcut from that cut is usually an odd shape that does not fit anywhere else and is thrown away. A lawn with a long sweeping border can easily waste 15 percent.
Small separate areas are worse than one large area of the same total size, because each one has its own perimeter of cuts.
It is alive, and that changes the ordering logic entirely.
Sod should be laid within a day or so of delivery, ideally the same day. Stacked on a pallet in warm weather it heats up and deteriorates fast, and grass that sat too long either establishes poorly or dies.
That means you cannot order generously and use the extra next weekend, which is the standard hedge with every other material on this site. It also means you cannot easily order more mid-job, because a fresh delivery may be a different batch with a visibly different colour or cut.
So the measuring has to be right first time, and the site has to be prepared before delivery rather than after. Measure carefully, confirm the pallet coverage, add a sensible allowance, and have the ground ready.
Sod needs decent soil contact to root, and most lawns being re-turfed need topsoil added first.
That is the same area you just measured, multiplied by a depth, divided by 324 to give cubic yards. It is a separate order and a separate delivery, and it needs to arrive and be levelled before the sod does. The cubic yard calculation is here, and measuring your yard for treatment or seed is covered separately.
If you are still deciding which laser measure to buy at all, our front page is the shorter version of everything on this site.