Sod Calculator

Enter your dimensions above and the calculator returns the answer in the units suppliers actually sell in — square feet and pallets.

Typical sod depth by application

Sod is sold by the square foot, by the pallet, or by the roll; it must be laid within 24 hours of delivery and watered immediately.

What the numbers assume

The result uses a bulk density of 55 lb per cubic foot and a default waste allowance of 5%. Both are typical values, not measurements of your material — bagged products and different aggregate sources vary by 10% or more. Change the waste field if your subgrade is uneven or you are pouring against forms with complex edges.

Sod shrinks as it dries and the edges rarely line up with your measurements, so order 5–10% over the measured area — offcuts cannot be stretched, and a second delivery costs another trip fee.

Costs shown are material only, based on a national average price you can edit. They exclude delivery, short-form fees, equipment rental and labour.

The pallets are on a clock, not a delivery window

Sod is the only material on this site that can be ruined by a phone call. Gravel and mulch will sit in a pile for a year without complaint. Sod is a living product with a shelf life measured in hours, and that fact reorganises the whole job: the calculator tells you what to buy, and the calendar tells you when.

Sod is cut, stacked and shipped the same day, because it starts dying the moment it is cut. Stacked pallets generate their own heat, and in summer that heat builds fast: leave a pallet stacked in the sun and you have roughly a day before the middle starts to sweat, sour and rot. Rotting sod is not recoverable. You are not laying it slightly late; you are laying dead grass that will not root.

So the deadline is not "this weekend." It is: laid within 24 hours of delivery in warm weather, watered the same day it goes down. Everything else is scheduled backwards from that window — which means the soil prep must already be finished when the truck arrives. Graded, raked, firmed, watered and ready. Order sod for a Saturday while the tiller is still in the shed and you have bought a pallet of compost.

Why this calculator returns square feet, not cubic yards

Every other calculator here hands you cubic yards, because every other material is a bulk volume. Sod is different on purpose. It is sold by area — the square foot, the roll, the pallet — because it arrives as a finished surface at a known thickness, roughly an inch including the soil under the roots. Type your dimensions into the sod calculator and you get square feet, pallets and cost. The default price is $0.55 per sq ft, a US national average meant to be replaced by your supplier's number.

The one figure you must confirm rather than assume is pallet coverage. Growers cut different roll sizes, and a pallet is usually 450 to 500 sq ft, sometimes as little as 400. On a 2,000 sq ft lawn, the difference between a 400 sq ft pallet and a 500 sq ft pallet is a whole extra pallet. Ask what the pallet on the truck actually covers — it should be on the invoice, and it is the one number that wrecks an order if you guess.

Working backwards from delivery day

Take a 20 × 20 ft lawn — 400 sq ft of new grass, the classic small front yard.

• Measured area: 20 × 20 = 400 sq ft
• Waste at 5% for a square lawn: 400 × 1.05 = 420 sq ft
• Sod cost at the $0.55 default: 420 × 0.55 = $231
• Pallets at 450 sq ft: 420 ÷ 450 = 0.93, so one pallet with offcuts left over
• Pallets at 500 sq ft: one pallet, comfortably

One pallet. Now the soil it goes onto, because that is where the money actually goes. Sod roots into the top 2 inches but needs prepared ground below: 4 to 6 inches of amended topsoil over the subgrade, the depth range in the material table on the topsoil calculator. At 4 inches over 400 sq ft: 400 × 0.333 = 133 ft³, or 4.9 yd³. With the 10% settling allowance, order 5.4 yd³ — about $189 at the $35 default, almost as much as the sod.

Now count backwards from the truck:

• Two to three weeks out — kill the existing vegetation. Herbicide needs time to translocate and actually kill the roots, and mowing short is no substitute. Do not till first, or you just chop the roots into more plants.
• One week out — till, amend and rough-grade. Water it and let it settle.
• Two to three days out — final grade and firm. The surface should be firm enough that you do not leave deep footprints, and it should sit about an inch below the walkway or driveway so the sod finishes flush with hard surfaces.
• Delivery day — lay immediately, and start watering within the hour of the first section going down.
• That evening — a thorough soak, not a sprinkle: enough water to move past the sod layer and into the root zone.

The first two weeks decide whether it takes

For two weeks the sod is a guest in your yard: its roots have been severed from the farm soil, and it lives on the water you give it plus whatever moisture is in its own soil layer. Once that layer dries out, the grass wilts.

• Days 1–14 — water daily, early morning, enough that the soil under the sod stays damp. In hot, dry weather, twice a day for the first week is normal.
• Day 3 check — lift a corner of one piece. New white roots should be probing into the soil below. If the underside is still slick and rootless, you are underwatering.
• Days 14–30 — taper to every other day, then twice a week, and water deeper and less often so roots go down rather than spreading along the surface.
• Day 30 — the first light mowing, and only when the grass is dry enough that the mower does not pull at the seams.

Two things people do in week one that cause real damage. The first is applying pre-emergent weed killer: most pre-emergents stop root formation, so using one on new sod guarantees it never roots. The second is heavy foot traffic and furniture. Wait until the lawn resists a gentle tug before you park anything on it.

Waste on a cut-up lawn is not 5%

The 5% default is honest for a rectangle and wrong for a real yard. Curves, beds cut into the lawn, trees to cut around and several separate areas all multiply offcuts, because sod is a fixed-width strip — typically 2 ft wide — and every curve leaves a triangle you cannot use. Ten percent is realistic for a lawn with curves or beds.

Two things people learn after ordering once. Offcuts cannot be stretched or pieced together to cover a gap; a seam through a visible area looks wrong from day one and separates faster. And a second delivery is rarely just the sod price — it carries another trip fee, and many suppliers have a minimum order that a few rolls will not meet, so the small top-up costs nearly as much as the first order.

Seams, staggering, and the failure that gets blamed on the sod

Run the strips perpendicular to the slope where there is one, so water does not run down the seams, and stagger the end joints the way you stagger bricks — a lawn laid with every seam lined up in a long row opens along that row in the first dry spell. Butt the edges tight; do not overlap them, because an overlap leaves a raised ridge that dries out and dies.

Then there is the failure everybody blames on bad sod: laying it over existing grass. The old grass underneath is still alive, so it either pushes up through the seams or dies and decays below, rotting the new sod's roots. The lawn looks fine for three weeks, then goes patchy and spongy. The fix is not more water: kill the old grass, remove it, and give the new sod 4 to 6 inches of prepared soil.

Sod versus seed is not a price-per-square-foot comparison. Sod buys a finished lawn in three weeks at a fixed material cost; seed costs far less and takes three months of watering and weed pressure. Small front yard, sod wins. Half-acre back field, seed wins by a wide margin.

Order the sod only when the ground is ready and the water is available: a hose that reaches every corner, and someone home to run it twice a day for a week. The cheapest way to waste $230 is to buy the pallet a week before you can lay it. If budget is the real constraint, price the prep with the topsoil calculator and the grade work with the fill dirt calculator before you choose between sod and seed, and check the methodology page when a supplier's pallet coverage differs from the calculator.