Calculators - Estimators - Template Generators
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Wall Length Rafter Thickness
Wall Width Rafter Depth
Roof Angle Enter angle in degrees directly or select pitch from dropdowns to calculate and auto enter angle °   in 12 Hip Thickness
Overhang (level) Hip Depth
Birdsmouth Seat Calc Calculate Birds-mouth Plumb and Seat cuts + HAP from roof angle Ridge Thickness
Include diagram with 4 individual roof segments and dimensions (flat) Extend Sheets Roof sheets extended past rafter ends (on angle) Ridge Depth
Include running measurement plan for ridge, wall and hip spacing mark out Rafter Spacing
Hip Adjustment Birds-mouth or Chamfer to drop hip level with common rafters
Rafter Spacing
Individual creeper diagrams with full dimensions    
Actual Physical Sizes All measurements are actual physical finished sizes.

Label Diagram Email this Calculation Creates a link to save or Email current calculation

Ply Sheathing Angle and Cut Set-back.
Both sheet orientations ↔ ↕

1138.93 ft² = 35.6 Sheets + waste = 40 Sheets
Sheets rounded up to next full sheet

Use < and > keyboard keys to animate roof angle.

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 Miter 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 Miter and Blade Angle Settings

Left click, release then drag to measure at scale in diagram below - Enlarge diagram scale for more accurate measurements.


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

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.

Buildertrend - The #1 Software for home builders & remodelers TRY IT NOW RISK FREE

View page on Phone

Metric or Imperial
The main (larger) navigation menu tabs are for the Metric versions of calculators.
If there is an Imperial (Feet and Inches) version, under the main Metric tab will be a smaller Imperial tab.

Create PDF files to print diagrams on current page. Print large images over multiple pages Printing to Scale Help and Plan Printing.

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

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

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All calculators on this site are GEOMETRIC only. Check local regulations for sizes, spacings and all engineering requirements.

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