Kai Calculator

Free Roofing Calculator

Calculate area for any roof type

Basic Roof Types

Shed Roof

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Gable Roof

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Hip Roof

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Hip (2) Roof

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Complex Roof Types

Cross Gabled Roof

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Cross Hipped Roof

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Mixed Cross Roof

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U Shaped Roof

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Custom Roof

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Additional Calculators

Pitch Calculator

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Geometry Calculator

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Materials Calculator

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Solar Calculator

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Why Use Our Roof Calculator?

Simple Calculations

Our calculator performs complex calculations behind the scenes, so you only need to enter basic measurements. We automatically compute additional dimensions based on what you provide.
Perfect for homeowners and contractors who need quick, accurate results without advanced technical knowledge.

Simplified Approach

We use a standardized approach that assumes uniform dimensions where appropriate. This means mirrored lengths and angles are treated as equal, simplifying your input process.
This method provides an ideal roof area calculation that works for most common roofing projects.

100% Free Service

All calculators and tools on our website are completely free to use with no hidden costs or subscriptions.
Our calculations are intended for estimation purposes. For final material purchases or construction plans, we recommend consulting with a roofing specialist.

Constantly Improving

We're always enhancing our calculators based on user feedback. If you have suggestions for improvements or need additional roof shapes, please email us at office.outline.roofing[at]gmail[dot]com.
Our goal is to provide the most comprehensive set of roofing calculation tools available online.

Kai Roofing Calculator

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