Calculators - Estimators - Template Generators - Plans & Tools
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Wall Length
Rafter Thickness
Wall Width
Rafter Depth
Roof Angle
Hip Thickness
Overhang (level)
Hip Depth
Include diagram with 4 individual roof segments and dimensions (flat)
Extend Roof sheets extended past rafter ends (on angle)
Ridge Thickness
Include running measurements plan for ridge, wall and hip placement
Ridge Depth
Rafter Spacing
Hip Adjustment Birds-mouth or Chamfer Hip to drop level with common rafters

Rafter Spacing Type

Birdsmouth Seat Cut  
Calculate Plumb and Seat cuts from roof angle

Label Diagram

Email this Calculation Creates a link (below) to save or Email current calculation

Possible alternate centres

Use < and > keyboard keys to animate roof angle. - Rafter Detail (new window)

Print rafter cutting templates, fold over rafter and cut through.

Birds-mouth Templates
Roof Angle

Circular Saw Bevel Setting Hip and Creeper Side Cut Settings If using a Circular Saw or Compound Mitre saw, set saw bevel angle to 45° to obtain Creeper and Hip side angles.
With the saw bevel angle set to 45°, cutting hips and creepers at the plumb cut angle will produce correct side angles.
See Saw Mitre and Blade Angle Settings

Print full scale templates and fold over wood. Cut through template or place on compound mitre saw to set angles.

Show Adjustments for Dutch Gable

Optimum Creeper Length?
From the optimum creeper length you can cut 1st + last, 2nd + 2nd last, 3rd + 3rd last etc creepers.

Save, Email and Re-load Current Calculation Click Email this Calculation to display a shortened URL containing the current calculator input values. Click this link to send an Email, which once opened (on your tablet or phone?) will re-open this page with the saved calculator input and results. You can also copy (save) and paste the shortened URL directly into the browser address bar to re-load the saved calculation results anytime.

Need these calculations on-site? Try the site with an iPad or Android Tablet. With a tablet, you can directly measure angles for input to the Roofing and Pitch Angle calculator apps. Lay the tablet on an incline and tap to measure angle. Tap again to capture angle and auto calculate roof, pitch, angles etc. The buttons appear automatically when you visit with a device capable of pitch measurement.

Slider Controls To fine tune Slider Controls click to select and use (cursor) keyboard keys.

Open new window containing only diagram images in current page ↓ This will better fit printed page. Printing to Scale Help
Print all diagrams on current page

Use your iPad or Android Tablet On-Site Your iPad, iPhone or Android Tablet or Phone is a valuable On-Site tool!
Lay your phone or tablet on an angled surface (roof ?) to directly measure angles and automatically calculate Roofing and Pitch Angle Apps.

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