CALC
Flooring, Tile & Roofing

Roof Shingle & Underlayment Calculator

Estimate shingle bundles, roofing squares, synthetic underlayment, and nails.

Free to use No registration Works on any device
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Tool Overview & Guide

About Roof Shingle & Underlayment Calculator

Calculate the exact roofing materials needed for your roof installation or replacement. Accurately determines ground footprint with roof pitch multipliers (slope X/12), eave overhang allowances, total roofing squares, shingle bundles, synthetic felt or ice & water barrier rolls, starter strips, ridge caps, galvanized roofing nails, and complete cost estimates.

Pro Tip: Bookmark this page (Ctrl+D / Cmd+D) for quick one-click access whenever you need fast, accurate calculations on the go!

Why Choose Our Roof Shingle & Underlayment Calculator?

Fast & Easy

Convert your data and files in just a few seconds.

High Quality

Get the highest quality, accurate outputs every single time.

Works Everywhere

Use on any device, phone, tablet or desktop without installs.

No Registration

No account needed. Zero signups, credits or hidden subscriptions.

Completely Free

All features are 100% free forever with no watermarks or fees.

Ready to Get Started?

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