🌱 Sod Calculator
By ToolNimba Editorial Team · Updated 2026-06-19
Coverage per piece is whatever your supplier lists for one roll or slab. A common US sod roll covers about 10 sq ft (roughly 0.93 sq m), but pallets, big rolls and slabs differ, so use your supplier's figure. Pieces are always rounded up to the next whole one, since you cannot buy a fraction of a roll. The waste allowance covers cuts, odd shapes and damaged pieces.
This sod calculator works out how much sod to buy for a new lawn. Enter the area you want to cover, either as a length and width or as a total square footage, then enter how much one roll or piece covers. The tool adds a waste allowance, rounds up to whole pieces, and (if you enter a price) estimates the cost, so you order enough in one trip without piling up leftovers.
What is the Sod Calculator?
Sod (also called turf or turfgrass) is grass that has already been grown on a thin layer of soil and cut into rolls or rectangular slabs. Instead of seeding and waiting weeks, you lay these pieces edge to edge over prepared soil for an instant lawn. To buy the right amount, you need two numbers: the area you are covering, and how much one piece of sod covers. Divide the first by the second and you have the number of pieces, give or take the waste.
The area is just length times width for a simple rectangle. For an L-shape or an odd plot, split it into rectangles, work out each one, and add them together, then enter the combined total in the total-area mode. The coverage per piece comes from your supplier and varies a lot: a common small roll covers about 10 square feet (roughly 0.93 square metres), while pallet slabs are often around 1.5 to 2.75 square feet each and big rolls can cover dozens of square feet. Always use the figure printed for the exact product you are buying.
Waste matters more with sod than with many materials, because lawns are rarely perfect rectangles. Curved borders, garden beds, paths and trees all force you to cut pieces, and the offcuts are usually too small to reuse. A 5% to 10% allowance covers normal trimming on a straightforward plot. Bump it toward 10% or higher for lots of curves, narrow strips or a sloped site, where more pieces end up part-used. Because you cannot buy a fraction of a roll, the count is always rounded up to the next whole piece.
When to use it
- Working out how many rolls of sod to order for a new front or back lawn before a trip to the supplier.
- Pricing a re-turfing job by combining the piece count with a price per roll.
- Comparing the cost of small rolls versus pallet slabs by changing the coverage-per-piece figure.
- Estimating sod for an irregular yard by splitting it into rectangles and entering the combined area.
How to use the Sod Calculator
- Pick imperial (feet) or metric (metres) units at the top.
- Choose length × width to enter the two dimensions, or total area to enter a single square footage.
- Enter the coverage of one sod roll or piece, taken from your supplier.
- Set a waste allowance (5% to 10% is typical) for cuts and offcuts.
- Optionally enter a price per piece to see the estimated total cost.
- Read off the number of pieces to buy, the area, and the cost.
Formula & method
Worked examples
A rectangular lawn 40 ft long and 25 ft wide, using sod rolls that each cover 10 sq ft, with a 5% waste allowance and a price of $4.50 per roll.
- area = 40 × 25 = 1000 sq ft
- area with waste = 1000 × (1 + 5 ÷ 100) = 1000 × 1.05 = 1050 sq ft
- pieces = round up of (1050 ÷ 10) = round up of 105 = 105 rolls
- cost = 105 × 4.50 = $472.50
Result: Buy 105 rolls, covering 1050 sq ft including waste, for about $472.50
An irregular yard measured at 1000 sq ft total, covered with pallet slabs that each cover 16 sq ft, using a 10% waste allowance because of curved beds.
- area = 1000 sq ft (entered directly)
- area with waste = 1000 × 1.10 = 1100 sq ft
- pieces = round up of (1100 ÷ 16) = round up of 68.75 = 69 slabs
- No price entered, so no cost is shown
Result: Buy 69 slabs to cover 1000 sq ft with a 10% allowance for cuts
Common sod piece sizes and how many cover 1000 sq ft (before waste)
| Sod product | Approx coverage per piece | Pieces per 1000 sq ft |
|---|---|---|
| Small roll | 10 sq ft (0.93 sq m) | 100 |
| Standard slab | 2.66 sq ft (16 in × 24 in) | 376 |
| Large slab | 5 sq ft (24 in × 30 in) | 200 |
| Big roll | 50 sq ft (0.61 m × 7.6 m) | 20 |
Suggested waste allowance by lawn shape
| Lawn type | Suggested waste |
|---|---|
| Simple rectangle, square edges | 5% |
| Some curves or beds | 7% to 8% |
| Many curves, narrow strips or slopes | 10% to 15% |
Common mistakes to avoid
- Forgetting to add any waste. Sodding an exact area with no allowance almost always leaves you short, because curved edges and obstacles force cuts that waste part of each piece. Add at least 5%, more for an irregular plot.
- Using the wrong coverage per piece. A small roll, a pallet slab and a big roll cover very different areas. Plugging in a generic number instead of the figure for the exact product you are buying can throw the count off by a wide margin.
- Rounding the piece count down. You cannot buy a fraction of a roll, so the count must round up. Ordering the rounded-down number leaves a gap you will have to patch on a second trip.
- Measuring the lawn after the beds, not before. Measure only the area you will actually grass. Subtract patios, paths and planting beds rather than the whole plot, or you will buy and pay for sod you never lay.
Glossary
- Sod (turf)
- Grass grown on a thin soil layer and cut into rolls or slabs, laid over prepared ground for an instant lawn.
- Roll
- A length of sod rolled up for handling. Small rolls often cover about 10 sq ft; big rolls can cover dozens of square feet.
- Slab (piece)
- A flat rectangular cut of sod, commonly stacked on a pallet. Sizes vary by region and grower.
- Coverage
- The area one roll or piece of sod covers, used to convert your lawn area into a number of pieces.
- Waste allowance
- An extra percentage added to the area to cover cuts, offcuts and damaged pieces, so you do not run short.
Frequently asked questions
How much sod do I need?
Measure the area you want to grass (length × width for a rectangle, or split an odd shape into rectangles and add them up), add a 5% to 10% waste allowance, then divide by the area one piece of sod covers and round up. This calculator does all of that once you enter the numbers.
How many square feet does a roll of sod cover?
It depends on the product. A common small sod roll covers about 10 square feet, standard slabs are often 2 to 5 square feet each, and big rolls can cover 30 to 50 square feet or more. Use the exact coverage your supplier lists, because the count changes a lot with piece size.
How much waste should I add for sod?
For a simple rectangular lawn, 5% is usually enough. For a yard with curves, beds, narrow strips or slopes, add 10% or more, since cutting around those shapes wastes part of each piece. It is cheaper to add a little extra than to make a second trip for one short roll.
Can I calculate sod for an irregular yard?
Yes. Break the yard into rectangles, work out each rectangle as length × width, add the results, then enter the combined number in total-area mode. Round any awkward edges generously and lean on the waste allowance for the leftover trimming.
How do I estimate the cost of sod?
Enter a price per roll or piece and the calculator multiplies it by the number of pieces you need. Remember the figure is for the sod only: delivery, soil preparation, and labour if you hire installers are extra.
Does this calculator work in metric units?
Yes. Switch to metric to enter your lawn in metres and coverage in square metres. A small roll that covers about 10 square feet is roughly 0.93 square metres, but always use your supplier figure for the exact product.