Home › Home & Construction › Sod Calculator

Sod Calculator

Use this free sod calculator to find out how much sod your lawn needs before you order. Enter the lawn size as a rectangle or a circle, pick rolls or pallets, set the coverage per roll or per pallet, and add a waste allowance for cutting. The calculator shows the lawn area in square feet and square yards and the number of rolls or pallets to order, rounded up so you do not run short halfway through the job.

How it works

Sod is sold by area, so the whole job starts with measuring the lawn. The calculator finds the lawn area in square feet, adds your waste allowance for cutting and trimming, and then divides by the coverage of one roll or one pallet to find how many pieces to order. The result is always rounded up to the next whole roll or pallet, because ordering a fraction of a roll is not possible and running short means a second delivery and a visible seam where the new sod meets the old.

For a rectangular lawn, the area is length times width. For a circular lawn, it is pi times the radius squared, where the radius is half the diameter you measure across the middle. The calculator also converts the area into square yards by dividing by 9, since some suppliers price sod by the square yard. A 1,000-square-foot lawn, for example, is 111.11 square yards.

Waste is the part most people forget. Sod comes in straight strips, but lawns have curves, corners, trees, paths, and edges that need cutting. Every cut leaves an offcut that usually cannot be reused, so you need more sod than the bare area. Five percent extra is the standard allowance for a simple rectangular lawn with few obstacles. Ten percent is safer for a lawn with curves or lots of edges to cut around, and fifteen percent is sensible for a very irregular shape. The calculator defaults to 5 percent, and you can raise it if your lawn is awkward.

Roll coverage and pallet coverage are both editable because suppliers differ. A common sod roll is 2 feet wide by 5 feet long, covering 10 square feet, and a standard pallet holds about 50 of those rolls, covering about 500 square feet. But some suppliers sell bigger rolls, some sell slabs instead of rolls, and pallet sizes vary by region and by grass type. If your supplier quotes a different coverage, type it in and the count updates. The same applies if you are buying sod by the piece from a garden center rather than by the pallet.

Measuring well is half the job. Walk the lawn with a tape measure and take the longest length and the widest width. If the lawn is not a clean rectangle, break it into pieces — a big rectangle plus a smaller rectangle for the side strip, or a rectangle plus a half-circle for a curved bed — and add the areas together. Then subtract anything that will not get sod: driveways, patios, paths, garden beds, and the footprint of a shed. Measuring in feet and rounding each measurement up to the next foot gives a small safety margin on top of the waste allowance.

Order timing matters as much as the count. Sod is a living product: once it is cut, it starts to dry out and heat up, especially in warm weather. Order for delivery on the morning you plan to lay it, prepare the soil the day before, and lay the sod the same day it arrives. Stacked pallets left in the sun can cook in a few hours, so lay the bottom rolls first and keep unlaid rolls in the shade. Water each section as soon as it is laid, not after the whole lawn is finished.

Keep in mind that this calculator covers the sod itself, not the extras. You will also need topsoil or compost if the ground is poor, a starter fertilizer, and plenty of water for the first two weeks while the roots take hold. New sod usually needs daily watering for the first week, then every other day, and you should stay off it until the roots grip the soil — usually about two to three weeks.

Worked example

A rectangular lawn measures 50 feet long by 20 feet wide. The sod comes in rolls covering 10 square feet each, a pallet covers 500 square feet, and the waste allowance is 5 percent.

Step 1: Find the lawn area — 50 × 20 = 1,000 square feet.
Step 2: Convert to square yards — 1,000 ÷ 9 = 111.11 square yards.
Step 3: Add waste — 1,000 × 1.05 = 1,050 square feet to cover.
Step 4: Find the rolls — 1,050 ÷ 10 = 105 rolls.
Step 5: Find the pallets — 1,050 ÷ 500 = 2.1, rounded up to 3 pallets.

The lawn needs 105 rolls, or 3 pallets if you buy by the pallet. Two pallets would only cover 1,000 square feet, which is exactly the bare lawn area with nothing left for cuts, so the third pallet is not optional — it is the waste allowance in physical form.

FAQ