Roof Calculator
Calculate roofing materials needed including shingles, underlayment, ridge cap, drip edge, and fasteners. Accounts for roof pitch slope factor and waste. Compare 6+ roofing materials by cost, lifespan, and cost per year.
| Item | Qty | Cost |
|---|---|---|
| Materials | ||
| Asphalt Architectural | 22 sq | $3,300 |
| Underlayment (Synthetic) | 6 rolls | $270 |
| Ice & Water Shield | 8 rolls | $520 |
| Ridge Cap | 2 bdl | $100 |
| Drip Edge | 18 pcs | $144 |
| Flashing | 5 | $75 |
| Roof Vents | 6 | $300 |
| Nails & Fasteners | -- | $110 |
| Labor & Services | ||
| Installation Labor | -- | $3,850 |
| Tear Off (1 layer) | -- | $1,100 |
| Dumpster Rental | -- | $500 |
| Permits & Inspections | -- | $400 |
| Grand Total | $10,669 | |
| Material | $/Square | Install | Life | Notes |
|---|---|---|---|---|
| Asphalt 3-Tab Shingles | $100 | $150 | 20 yrs | Most affordable, basic protection |
| Asphalt ArchitecturalSelected | $150 | $175 | 30 yrs | Most popular, dimensional look, good warranty |
| Standing Seam Metal | $400 | $300 | 50 yrs | Premium, energy efficient, no exposed fasteners |
| Corrugated Metal | $200 | $200 | 40 yrs | Durable, lightweight, industrial look |
| Clay Tile | $500 | $400 | 75 yrs | Mediterranean look, very heavy, needs structural support |
| Concrete Tile | $350 | $350 | 50 yrs | Affordable tile option, heavy |
| Natural Slate | $800 | $600 | 100 yrs | Premium, 100+ year lifespan, very heavy |
| Cedar Shake | $400 | $350 | 30 yrs | Natural beauty, needs maintenance, fire risk |
How to Use Roof Calculator
- 1Enter roof dimensions
- 2Select roof pitch
- 3Choose roofing material
- 4View materials list and total cost
Frequently Asked Questions
How many shingles do I need?▾
Calculate roof area (length × width × slope factor), divide by 100 to get squares. Each square needs 3 bundles of standard shingles. A 1,500 sqft footprint with a 6:12 pitch equals about 1,680 sqft of roof area, or 17 squares (51 bundles).
How much does a new roof cost?▾
Asphalt shingles: $3.50-7.00/sqft installed. Metal standing seam: $8-14/sqft. Tile: $10-18/sqft. Slate: $15-30/sqft. A typical 1,700 sqft roof costs $6,000-12,000 for asphalt or $14,000-24,000 for metal.
What is a roofing square?▾
A roofing square equals 100 square feet of roof area. It is the standard unit for measuring and pricing roofing materials. A 2,000 sqft roof is 20 squares. Most contractors quote prices per square.
About Roof Calculator
Calculate roofing materials needed including shingles, underlayment, ridge cap, drip edge, and fasteners. Accounts for roof pitch slope factor and waste. Compare 6+ roofing materials by cost, lifespan, and cost per year.
NexTool's Roof Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.
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