Roof Replacement Cost Calculator — Quick Ballpark
Every roofing estimate starts with the same unit: the square — 100 sq ft of roof. This calculator builds a ballpark from your per-square pricing, then adds the two factors that always change the number: tear-off and pitch.
It's a quoting starting point, not a substitute for a site measure — but it gets you in the right zip code before you ever climb the ladder.
Job estimate
$13,250
Per square (all-in)
$530
Per sq ft
$5.30
Typical asphalt shingle jobs run $350–600 per square installed depending on market and pitch. This is a ballpark — always do a real site measure.
The formula
Estimate = Squares × price per square + tear-off ($80/sq) + steep-roof premium (15%). Typical asphalt shingle: $350–600 per square installed depending on market.
Pro tips
- →Measure roof area in squares: total sq ft ÷ 100. Two-story houses aren't bigger roofs — don't double-count.
- →Tear-off and steep-pitch premiums are where under-quoted jobs lose money. Never skip them.
- →Use this for a quick phone quote, then do a real measure for the signed bid.
Frequently Asked Questions
How much does a new roof cost?+
Asphalt shingle roofs run roughly $7,000–$18,000 for a typical 2,000–2,500 sq ft home (20–30 squares), depending on market, pitch, and tear-off.
How many squares is my roof?+
Divide your home's footprint by about 1.5 for a steep roof, or measure: length × width of each roof plane ÷ 100, summed.
What's the cost per square for shingles?+
Installed, $350–$600 per square for architectural shingles — $250–400 for 3-tab. Metal and tile run higher.
Now imagine the quoting writing itself.
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