How to Measure How Much Sod You Need

This guide walks you through measuring your lawn to calculate exactly how much sod to order. You’ll measure the area, account for shapes and waste, and use the calculator below to get the square footage and number of rolls or pallets needed. Before you start, grab a tape measure, paper, and a pencil.

Formula

The basic formula for a rectangular lawn is:

Area (sq ft) = Length (ft) × Width (ft)

For irregular shapes, break the lawn into rectangles, triangles, and circles, calculate each area, then add them together. The calculator above also computes the volume of soil needed if you’re adding a layer of topsoil before laying sod (depth input). The volume formulas are:

• Cubic feet = Length × Width × Depth (in inches) / 12
• Cubic yards = Length × Width × Depth (in inches) / 324

Variables:

• Length (l) – longest dimension of the lawn in feet
• Width (w) – perpendicular dimension in feet
• Depth (d) – thickness of topsoil in inches (default 3)

Worked Example

Using the default values from the calculator: length = 40 ft, width = 25 ft, depth = 3 in.

1. Area = 40 × 25 = 1,000 sq ft
2. Volume in cubic feet = 40 × 25 × (3/12) = 40 × 25 × 0.25 = 250 ft³
3. Volume in cubic yards = 250 / 27 = 9.26 yd³ (matches the calculator’s 9.26)

So for a 40×25 ft lawn, you need 1,000 sq ft of sod and about 9.26 cubic yards of topsoil if you’re adding 3 inches.

Step-by-Step

1. Draw a sketch of your lawn. Include the house, driveway, walkways, and flower beds. This helps you visualize the shape and break it into manageable sections.
2. Measure each rectangular section. Use a tape measure (at least 100 ft) and measure length and width in feet. For a simple rectangle, that’s it. For L-shaped or U-shaped lawns, divide into two or three rectangles.
3. Measure triangular sections. For a triangle, measure the base (one side) and the height (perpendicular distance from the base to the opposite corner). Area = 0.5 × base × height.
4. Measure circular sections. For a circular bed or lawn, measure the diameter (width across the center). Area = π × (diameter/2)². Use 3.14 for π.
5. Add up all section areas. Sum the square footage of every rectangle, triangle, and circle. This is your total area in square feet.
6. Add 5–10% for waste. Sod comes in strips that need cutting around curves and edges. Multiply your total by 1.05 to 1.10. For simple rectangular lawns, use 5%; for irregular shapes, use 10%.
7. Convert to rolls or pallets. Check with your supplier for the coverage of one roll or pallet (common roll sizes cover 10–20 sq ft; pallets often cover 400–500 sq ft). Divide your total (including waste) by the coverage per unit, then round up to the nearest whole roll or pallet.
8. If adding topsoil, calculate volume. Use the calculator above with your length, width, and desired depth (usually 2–4 inches). Order in cubic yards, rounding up.

Common Mistakes

• Forgetting to add waste. Sod is not like pavers; it can’t be used in small pieces easily. Always add at least 5%.
• Mixing units. Measure everything in feet. If you measure in inches, convert to feet by dividing by 12. Don’t mix feet and yards.
• Ignoring slopes and curves. A curved border means more cutting and more waste. Be generous with the waste factor.
• Measuring the whole property, not just the lawn. Exclude areas covered by buildings, driveways, patios, and existing flower beds.
• Rounding down. Always round up to the next whole roll or pallet. You can’t buy a fraction of a roll.

Tips

• Use a rolling measuring wheel for large, open lawns – it’s faster and less error-prone than a tape measure.
• For irregular shapes, use graph paper and draw to scale (e.g., 1 square = 1 ft). Count the squares to estimate area.
• If your lawn has a gentle slope, measure the horizontal projection, not the surface distance. Sod lies flat on the ground, so the area is the horizontal footprint.
• Order 10% extra for a first-time installation – you’ll likely make a few mistakes cutting around obstacles.
• Ask your supplier if they deliver in full pallets only. If so, round up to the nearest pallet.

Troubleshooting

My lawn is too complex to measure easily. Break it into smaller sections – even 1-foot-wide strips work. Measure each strip and add them up. Or use an online satellite mapping tool to trace your lawn and get an area estimate, but verify with a manual measurement.

The calculator gives a different number than my own math. Double-check your measurements and that you’re using feet consistently. Also verify you’re using the same formula (area = length × width).

I don’t know how much a pallet covers. That’s fine – the calculator gives you square footage. Call your sod supplier and ask for the coverage per pallet or roll. It varies by region and grass type.

My lawn has a large tree or planter in the middle. Measure the total rectangle, then measure the tree bed as a circle or square and subtract its area from the total.

I’m adding topsoil but the volume seems too high. Check your depth – 3 inches is common, but 2 inches is often enough for a new lawn. Reducing depth by 1 inch cuts volume by a third.

Frequently Asked Questions

Q: How much sod do I need for a 10×20 ft lawn?
A: 10 × 20 = 200 sq ft. Add 5% waste = 210 sq ft. If a roll covers 10 sq ft, you need 21 rolls.

Q: Can I measure in yards instead of feet?
A: Yes, but be consistent. 1 yard = 3 feet. If you measure in yards, area = length (yd) × width (yd) gives square yards. Multiply by 9 to get square feet.

Q: How much topsoil do I need for 1,000 sq ft at 3 inches deep?
A: Use the calculator: 1,000 × (3/12) = 250 cubic feet. Divide by 27 = 9.26 cubic yards. Order 10 cubic yards to be safe.

Q: What if my lawn is a perfect circle?
A: Measure the diameter, divide by 2 to get the radius. Area = π × radius². For a 20-ft diameter, radius = 10, area = 3.14 × 100 = 314 sq ft.

Q: Is it better to order extra sod or exactly what I measured?
A: Always order extra – at least 5% more. Sod can dry out or get damaged during installation, and cutting around obstacles wastes pieces. It’s better to have a few extra strips than to run short.

Q: Does the sod calculator work for irregular shapes?
A: The calculator assumes a rectangle. For irregular shapes, break your lawn into rectangles, calculate each with the calculator, and add the results. Or use the manual method described above.

Related

• How Much Water Does Sod Need? Daily Watering Guide
• How Much Water Does Bermuda Sod Need?
• New St Augustine Sod Water Needs: How Much?

in l | Lawn length | ft | 40 | 0 | 100000
in w | Lawn width | ft | 25 | 0 | 100000
in d | Depth | in | 3 | 0 | 120
out yd | Volume | yd³ | l * w * d / 324 | 2
out ft3 | Volume | ft³ | l * w * d / 12 | 1