1. Measure lawn area
Measure length × width of grass areas in feet.
Calculator workspace
Enter your lawn dimensions to calculate total area for seeding, fertilizing, or sod installation.
Use the Lawn Square Foot Calculator to measure your yard area for grass seed, fertilizer, weed control, and sod projects. Enter length and width to get instant results in square feet and acres. Estimate how much seed, fertilizer, or sod to purchase based on your total lawn area.
Choose a specialized calculator for your exact project — rooms, shapes, materials, outdoor areas, and unit conversions.
Lawn square footage is the total grass area for sod, seed, or fertilizer planning. Measure length × width and subtract walkways and garden beds. For overall property area, use the yard calculator.
Getting started
To calculate lawn square footage, measure length × width of grass areas in feet. Subtract walkways, garden beds, pools, and other non-grass features. One sod pallet covers 450-500 sq ft. One bag of grass seed covers 1,000-5,000 sq ft.
Measure length × width of grass areas in feet.
Subtract walkways, garden beds, pools, and patios from total area.
Sod pallet covers 450-500 sq ft. Seed bag covers 1,000-5,000 sq ft per label.
Quick reference
Material pricing
Sod costs $0.30-0.85 per sq ft installed. Grass seed costs $40-150 per bag covering 1,000-5,000 sq ft. Multiply lawn area by price per unit for total cost.
There are 2 steps to calculate material cost:
Buy 5% extra sod or seed to cover edges and patches.
FAQ
Measure yard length and width in feet, multiply together, then subtract the house, driveway, and garden bed areas. A 100x60 ft yard minus a 1,500 sq ft house footprint and 400 sq ft driveway = 4,100 sq ft of lawn.
Most grass seed needs 2-4 lbs per 1,000 sq ft for new lawns and 1-2 lbs per 1,000 sq ft for overseeding. A 5,000 sq ft lawn needs 10-20 lbs of seed for a new installation.
Most fertilizers cover 5,000-15,000 sq ft per bag. Check the bag label for coverage area and divide your lawn square footage by that number to determine how many bags to buy.
The average American lawn is about 5,000-10,000 square feet. Small urban yards may be 1,000-3,000 sq ft, while suburban lots often have 8,000-15,000 sq ft of grass.
Calculate lawn area in square feet and order 5% extra sod for waste. Sod is sold in rolls (typically 9 sq ft each) or pallets (450 sq ft). A 5,000 sq ft lawn needs about 556 rolls or 11.7 pallets.
Divide square feet by 43,560 to get acres. A 10,000 sq ft lawn is 0.23 acres. A quarter-acre lot (10,890 sq ft) is a common suburban yard size.
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