Roofing

Shingle Calculator

Use this shingle calculator to estimate roofing squares, bundles and approximate shingle count from measured roof surface area. Adjust waste and bundle coverage to match the specific roofing product you plan to use.

✓ Free✓ Instant result✓ No signup

Step 1

Enter project details

Measured roof area sq ft Waste allowance % Coverage per bundle sq ft Shingles per bundle

Planning estimate only. Confirm local prices, supplier specifications and site conditions before ordering.

Step 2

Your estimate

Area with waste—

Roofing squares—

Approx. bundles—

Approx. shingles—

Bundle coverage varies by product. Confirm the manufacturer coverage, starter, ridge-cap and waste requirements before placing an order.

Optional next step

Request a local roofing quote

Complete three short steps to check for available local professionals.

Free to submit No purchase required

How matching works

ProjectMetrica helps route your shingle roofing installation or repair request to participating platform partners or service providers when an eligible match is available.

Availability depends on ZIP code, service and project details.
ProjectMetrica is not the contractor and may receive compensation for an accepted request.

ProjectMetrica collects this request and may share it with participating service providers and platform partners for the home-improvement project you selected. The consent session is independently recorded. See the Privacy Policy.

1 Project 2 Timing 3 Contact

Step 1 of 3

What kind of project is it?

Choose the service details and enter the five-digit project ZIP code.

Roof material Roofing project ZIP code

Step 2 of 3

When are you planning the work?

These details help make the request more relevant. No availability check is sent yet.

Hiring status Project timeframe Can you authorize work on the property? Project details

Step 3 of 3

Where can professionals reach you?

Use the contact details for the property where the project is planned. This usually takes about a minute.

Your request stays focused on this project

Your address helps check local service availability and is not posted publicly.
Submitting is free and does not require you to hire anyone.
Your details are used to process and route the home-service request described here.

First name Last name Project street addressEnter the street address where the work is planned. You can correct every address field before submitting. City State Phone Email

By submitting, you confirm that you are at least 18 years old and that the information you provided is accurate.

Your request may be sent to participating home-improvement providers when a qualifying match is available.

Before you order

Check local supplier specs

Density, bag coverage, pallet size and recommended installation depth can vary by material and supplier.

Professional installation

Compare local project quotes

Connect with a local professional for a site-specific estimate.

Get free quotes →

Formula & assumptions

How the shingle calculator works

Order area = roof area × (1 + waste %). Roofing squares = order area ÷ 100. Bundles = order area ÷ coverage per bundle. Approximate shingles = bundles × shingles per bundle.

For a better estimate

Use roof surface area after accounting for pitch, not building footprint alone.
Check the manufacturer label because bundle coverage and shingle count can vary by product.
Order strategy may need to account for starter strips, ridge caps and matching material for future repairs.

Useful project tools

Tools that can help with this project

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.

Tape measureMeasure roof planes and material layout. View on Amazon → Chalk lineCreate straight layout reference lines. View on Amazon → Roofing nail pouchKeep small roofing tools and fasteners organized. View on Amazon →

Common questions

Frequently asked questions

How many bundles of shingles do I need?+

Divide roof area including waste by the stated coverage per bundle, then round up to whole bundles.

How many bundles are in a roofing square?+

Many products are packaged at roughly three bundles per square, but coverage varies, so use the product label rather than assuming.

Do I need extra shingles for waste?+

Usually yes. Cuts, valleys, hips, starter details and roof complexity can increase waste beyond the net roof area.

Enter project details

Your estimate

Request a local roofing quote

What kind of project is it?

When are you planning the work?

Where can professionals reach you?

Check local supplier specs

Compare local project quotes

How the shingle calculator works

For a better estimate

Tools that can help with this project

Frequently asked questions

Guides for this project

How Many Shingles Do I Need?

Roofing Squares Explained: Square Feet, Bundles and Coverage

Roof Pitch Waste Factor: Planning Shingle Waste

How to Measure a Roof for Shingles

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