Determine Home Orientation
Quickly find the home’s orientation with an adjustable on-screen protractor.
Measure Angles
Easily measure any angle directly on your plans.
Check Roof Pitch
Accurately determine roof slope in seconds.
Instantly determine building orientation, angles, and roof pitch — directly on your screen.
14-day free trial — no commitment
Download Free Trial Buy LicenseWillCalc Protractor is a precision on-screen measurement tool designed for builders, designers, and energy consultants. It allows you to quickly determine the orientation of a home, measure angles, and calculate roof pitch directly from your plans or screen — no manual tools required.
Quickly find the home’s orientation with an adjustable on-screen protractor.
Easily measure any angle directly on your plans.
Accurately determine roof slope in seconds.
Quickly rotate the protractor to match any plan or drawing orientation.
Visually align and identify the front-facing direction of a home with precision.
Get accurate angle readings without switching tools or doing manual calculations.
Quickly determine roof pitch directly from drawings or images.
Use it over PDFs, plans, images, or any application on your computer.
No complicated setup — launch and start measuring immediately.
No more guessing or manual measuring — get answers instantly.
Reduce errors when determining orientation for Title 24 compliance.
Keep your workflow digital and efficient without extra tools.
One-time purchase
No subscription. Pay once, use forever.
14-day free trial — try it risk-free
Purchase LicenseDownload now and start measuring in seconds.
Download Free Trial