Shingle Calculator

Q: How many bundles of shingles do I need?

You need 3 bundles per roofing square (100 sq ft). For a 1,700 sq ft roof: 17 squares × 3 = 51 bundles, plus 10% waste = 57 bundles.

How many shingles do I need? Enter your roof size and get an instant answer — bundles, squares, and cost.

Get a fast estimate from your roof square footage

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Total Roof Area

sq ft

Waste Factor

You Need

60 bundles

17.9 squares • 1,792 sq ft roof area

Estimated Cost Range

$1,971 – $2,956

PRO

Professional Calculator

Complete bill of materials with all accessories and waste calculations

Total Roof Area

sq ft

Roof Pitch

Shingle Type

Total Materials Cost

$3,607

Shingle Bundles

Roof Area

1,973 sq ft

Roofing Squares

19.7

Cost Breakdown

Shingles: $2,750 (76%)

Underlayment: $135 (4%)

Ice & Water: $440 (12%)

Trim & Flashing: $217 (6%)

Fasteners & Starter: $65 (2%)

Detailed Breakdown

Shingle Bundles66 bundles (architectural)

Coverage2,170 sq ft incl. 10% waste

Underlayment3 rolls (synthetic)

Ice & Water Shield8 rolls (2 rows)

Drip Edge22 pieces (10 ft each)

Ridge Cap2 bundles (50 ft)

Starter Strip1 rolls (100 ft eave)

Flashing4 pieces

Chimney4 pieces

Skylight0 pieces

Valley0 pieces (0 ft)

Roofing Nails1 boxes (~7,200 nails)

Total Material Cost$3,607

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Quick Answers

How many bundles of shingles do I need?

A standard bundle covers 33.3 sq ft. You need 3 bundles per roofing square (100 sq ft). For a typical 1,700 sq ft roof: 17 squares × 3 = 51 bundles, plus 10% waste = 57 bundles. Use the calculator above for an exact estimate.

How much does a new roof cost in 2026?

The average roof replacement costs $8,000-$22,000 for a 1,700 sq ft home. Asphalt shingles: $8K-15K. Metal: $15K-30K. Tile: $25K-60K. Get your estimate.

What is a roofing square?

A roofing square equals 100 square feet of roof area. A 2,000 sq ft roof = 20 roofing squares. Convert squares to bundles.

How do I calculate the number of shingles for my roof?

Measure your roof area in square feet, divide by 100 to get roofing squares, multiply by 3 to get bundles, then add 10-15% for waste. Or enter your dimensions in our shingle calculator above for an instant answer including all accessories.