Sprinkler Head Calculator
Enter your size to get sprinkler head quantity, plus an estimated cost. Waste is included and prices are editable.
Material needed
Estimated cost
The Material needed figure is how many sprinkler heads to buy, including extra for waste, and the Material cost is the estimated price for those heads, so you can cover the whole area with the planned spacing.
How to calculate sprinkler head
Sprinkler heads, about one head per 100 square feet, with waste.
Formula: quantity = area × 0.01 × (1 + waste %) = 100 × 0.01 × 1.10 = 2 heads.
Worked example
Example: 10 ft × 10 ft = 100 sq ft. Quantity: 2 heads, about $40 at $20 per heads.
Tips
Measure the full area, then subtract large openings if you want an exact count. Order a little extra for cuts and breakage, and confirm quantities with your supplier before you buy.
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Frequently asked questions
How much sprinkler head do I need?
Example: 10 ft × 10 ft = 100 sq ft. Quantity: 2 heads, about $40 at $20 per heads.
How much waste should I add?
Add 10% for straight areas and 15% for areas with many cuts, corners and openings.
Are the prices accurate?
Prices are editable estimates. The defaults are typical US figures, and your local price can be higher or lower.