How many bundles of shingles per square?

3 bundles per square for standard 3-tab and architectural shingles. Designer and heavy shingles may need 4 to 5 bundles per square. One square covers 100 sq ft of roof.

3-tab vs architectural shingles?

3-tab shingles are flat and uniform, lasting 20 to 25 years at $25 to $35 per bundle. Architectural shingles have dimensional texture, last 30 to 50 years, and cost $30 to $50 per bundle.

How many bundles for a 2,000 sq ft roof?

About 66 bundles of architectural shingles (20 squares x 3 bundles + 10% waste). Add starter strips, ridge caps, and underlayment separately.

How much does a bundle of shingles weigh?

3-tab bundles weigh about 60 lbs. Architectural bundles weigh 65 to 80 lbs. Designer shingles can weigh 80 to 100 lbs per bundle.

What shingle warranty should I look for?

30-year minimum for architectural shingles. 50-year or lifetime for premium products. Impact-resistant shingles (Class 4) may qualify for insurance discounts in hail-prone areas.

Do I need starter strip shingles?

Yes. Starter strips go along the eaves and rakes to seal the first course against wind uplift. One bundle covers about 100 linear feet of eave edge.

How many ridge cap bundles do I need?

One ridge cap bundle covers about 25 linear feet of ridge. A typical 40 ft ridge needs 2 bundles. Hip roofs need additional bundles for each hip line.

How many nails per shingle?

4 nails per standard shingle, 6 nails in high-wind zones (above 110 mph). That works out to about 1.5 lbs of roofing nails per square.

RoofingShingle Calculator

Shingle Calculator

Estimate asphalt shingle bundles, roofing squares, starter strips, ridge caps, underlayment rolls, order weight, and material cost.

Shingle Order

Roof surface area (sq ft)

Use total roof surface area after pitch adjustment.

Shingle type

The common upgrade for most reroofs.

Roof shape

Straight runs, fewer cut ends.

Waste Factor: 10%

10% is a typical starting point for gable roofs

Ready to calculate

Enter roof area to estimate shingle bundles.

Last updated June 9, 2026 by our expert review team

Bundle Ordering Roadmap

Step 1

Area

Start with pitch-adjusted roof area.

Step 2

Squares

Divide order area by 100.

Step 3

Bundles

Use the product bundles per square.

Step 4

Accessories

Add starter, cap, and repair bundles.

Expert Contributors

Creator

Hawkin

Certified Cost & Estimating Professional

Hawkin

Certified Cost & Estimating Professional

AACE-certified estimator working with 20+ insulation companies including the two largest franchises in America.

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Expert Review

Ehsan Ghazanfari

Licensed Structural Engineer

Ehsan Ghazanfari

Licensed Structural Engineer

FISE-certified structural engineer with 11+ years designing bridges, retaining walls, and foundations. MSc from Aalto University.

See full profile

Updated June 2026

How we verify our calculators

Shingle Bundle Ordering Guide

A shingle order is more than the main roof field. Count bundles, starter strips, ridge caps, and a small repair stash before the delivery truck arrives.

Shingle ordering guide showing roof area to squares, bundles per square, starter strips, ridge cap shingles, extra repair bundles, and product coverage checks.

Use the image as an ordering checklist. Product coverage can vary, so confirm bundle coverage and accessory packaging on the shingle label or supplier quote.

Pro Tips

Enter roof surface area, not house floor area. Use the roofing calculator first if you still need pitch-adjusted roof area.

Treat the waste input as the total waste allowance. A simple gable often starts near 10%, while hips and valleys need more.

Starter strips and ridge caps are not the same as field shingles. Keep them on the order list so the first course and ridge lines seal correctly.

Order the same product, color, and lot when possible. A small repair stash is easier than matching weathered shingles later.

Use the roofing calculator for whole-roof materials, and this page when bundle count is the main question.

How the Calculator Works

The calculator assumes you already know total roof surface area. It adds your chosen waste allowance, converts to roofing squares, then multiplies by the selected shingle bundle coverage.

Order area

roof area x (1 + waste%)

Squares

order area / 100

Field bundles

squares x bundles per square

Starter and ridge cap bundles use the linear lengths you enter. Underlayment rolls use the waste-included order area as a planning allowance.

Quick Reference

1 roofing square: 100 sq ft
3-tab or architectural: about 3 bundles/square
Designer shingles: often 4 bundles/square
Starter strip bundle: default 100 ft
Ridge cap bundle: default 25 ft
Typical gable waste: 10%

Shingle Type Planning

3-tab$25 - $35 /bundle, 3 bundles/square

Basic flat profile, often used on tight budgets.

Architectural$30 - $50 /bundle, 3 bundles/square

The common upgrade for most reroofs.

Impact-resistant$40 - $65 /bundle, 3 bundles/square

Common in hail-prone markets. Confirm local insurance rules.

Designer$45 - $75 /bundle, 4 bundles/square

Heavier specialty profiles can use more bundles per square.

Real-World Shingle Examples

Small ranch

1,200 sq ft, gable, architectural, 10% waste

13.2 squares, 40 bundles

Add 2 starter bundles and 2 ridge cap bundles for a simple roof.

Two-story gable

2,000 sq ft, architectural, 10% waste

22.0 squares, 66 bundles

Default setup. The calculator includes the full waste allowance once.

Hip roof in hail country

2,500 sq ft, impact-resistant, 15% waste

28.8 squares, 87 bundles

More cuts at hips, plus heavier bundles for delivery planning.

Complex designer roof

3,000 sq ft, designer, 20% waste

36.0 squares, 144 bundles

Designer products can use 4 bundles per square, so pallets get heavy fast.

Shingle Calculator FAQ

How many bundles of shingles are in a square?

Many 3-tab and architectural products use 3 bundles per 100 sq ft square. Some designer or specialty products use 4 or another product-specific coverage.

How many bundles do I need for a 2,000 sq ft roof?

For architectural shingles with 10% waste, plan about 66 field bundles before starter strips, ridge caps, and a small repair stash.

Is this different from the Roofing Calculator?

Yes. Shingle focuses on asphalt bundle ordering. Roofing handles the broader roof takeoff, including pitch, material type, and whole-roof quantities.

Should I count starter strips separately?

Yes. Starter strips go along eaves and often rakes. They protect the first course against wind uplift and are usually packaged separately.

How much do shingles weigh?

A bundle commonly weighs about 60 to 80 lb. A 66-bundle architectural order can weigh roughly 4,620 lb before accessories.

Does the waste factor include roof style?

Yes. The waste input is the total waste allowance. Choosing gable, hip, or complex fills a suggested starting value, but it is not added a second time.

Shingle Ordering Mistakes

Adding waste twice

Use one total waste percentage. If a roof shape preset sets 15%, do not add another 15% on top.

Forgetting accessory shingles

Starter strips and ridge caps are often separate products with separate coverage rates.

Ignoring delivery weight

A medium architectural order can weigh several thousand pounds. Plan delivery location before pallets arrive.

Assuming every bundle covers the same area

Check the product label. Designer shingles and specialty profiles may not match standard bundle assumptions.

Important Disclaimer

These estimates are for planning purposes only. Actual costs vary by location, material availability, and project complexity. Always get at least 3 local quotes. This calculator does not replace professional advice.