Diagonal & Right Triangle Calc

Diagonal & Right Triangle Calc (DiagonalCalc) is a construction, carpentry, and geometry calculator built for fast right-angle solutions, hypotenuse math, and corner-to-corner diagonal square-ups in native feet, inches, and fractions. Whether you are squaring a deck frame using the 3-4-5 rule, finding common rafter lengths, laying out stair stringers, or solving Pythagorean theorem homework, DiagonalCalc delivers exact measurements with live scaled diagrams.

Built for US & Canadian Framers, Carpenters, Woodworkers & DIYers:
Stop converting tape-measure fractions to decimals by hand. DiagonalCalc features a dedicated Imperial Construction Mode with a custom Feet & Inch keyboard and quick fraction picker (down to 1/16"), plus an AI Sketch & Blueprint Scanner and Job Site Voice Assistant for hands-free construction math on the job site.

Core Calculators & Job Site Tools:

1. Right Triangle & Hypotenuse Calculator (Pythagorean Solver)
Enter any two sides (Rise, Run, or Diagonal / Hypotenuse) and calculate the third side instantly using a² + b² = c². Ideal for roof framing, brace lengths, gable studs, and carpentry layouts. Tap "Show calculation steps" to inspect the complete step-by-step mathematical proof.

2. Rectangle Diagonal & 3-4-5 Framing Square-Up Calculator
Enter Length and Width (Height) to get the exact corner-to-corner diagonal needed to square up foundations, concrete forms, wall frames, decks, cabinets, and window openings. You can also enter the diagonal and one side to solve for the missing dimension.

3. Right-Angle Trigonometry Calculator (Sides & Angles)
Enter any two known values (two sides, or one side and an angle in Degrees or Radians) to solve all sides, the hypotenuse, and both acute angles (∠Y and ∠Z) for miter cuts, pitch angles, and bevels.

4. AI Camera Sketch Scanner & Job Site Voice Assistant
- AI Blueprint & Sketch Scanner: Snap a photo of hand-drawn wood notes, napkin sketches, or shop blueprints. The AI automatically identifies 2D and 3D geometric shapes, reads labeled dimensions, and calculates diagonals, cut angles, perimeter, area, surface area, and volume.
- Job Site Voice Assistant: Tap the microphone to ask hands-free construction and geometry questions aloud, or search 120+ built-in job site prompts for framing diagonals, stair risers, rafter cuts, and concrete volume.

5. Native Feet-Inch Fractions (1/16") & Metric Unit Converter
Work directly in the measurements on your tape measure:
- Imperial Construction Keyboard: Enter measurements like 12' 6-3/16" effortlessly with dedicated Feet ('), Inch ("), dash (-), slash (/), and 1/16" to 15/16" fraction selector keys.
- Full Imperial & Metric Support: Switch between Inches (inch), Feet (ft), Yards (yard), Miles (mile), Millimeters (mm), Centimeters (cm), and Meters (m) at any time, with instant cross-unit conversion tables below every result.

6. Printable A4 PDF Engineering Reports & Blueprint Sharing
Export your calculation history or CAD diagrams as a clean, printable PDF Engineering Report with proportional vector diagrams, formulas, precision settings (1 to 5 decimal places), and timestamps—or share a plain-text summary with your crew or clients.

7. Interactive 28-Shape CAD Sandbox & TV Screen Diagonal Calculator
Drag vertices, pin corners, and test Ortho/Polar snapping across Right Triangles, Isosceles, Equilateral, Rectangles, Trapezoids, Parallelograms, and Polygons (Pentagon to Octagon) in the Interactive Playground. Also includes a complete 2D/3D Geometry Formula reference and a 16:9 TV Screen Diagonal & Aspect Ratio Calculator.

Customize your default startup tool to launch straight into the Triangle, Rectangle, Right-Angle, or AI Scanner screen every time you open the app.