After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.
Roof rafter finder.
Calculate the length of common rafters with this free and easy online tool by entering a dimension for the roof width selecting a pitch for the roof and the thickness of the ridge.
Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through.
If your tool continuously blinks and beeps it may be indicating calibration errors or a decrease in density.
Roof pitch calculator roof slope calculator the roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need.
Rafter run outer wall this should be measured starting from the center of the roof span and then extending to the very edge of the exterior wall.
Allow for ridge thickness when determining rafter run to outer wall.
The run of the rafter.
Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results.
The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r.
Things you ll need tape measure rubber mallet.
The chiptoolz rafter finder center line locator is the easiest way to find the center of a rafter ever.
Here the number is 941 86 inches.
Place a piece of thin cardboard over the irregular surface and slowly scan over the cardboard.
Start in normal stud.
See rafter run to outer wall calculator below.
Don t assume the first indication of a rafter is.
With the tool s patented combination of locating wire and 3 4 radius indicator key finding the center of the rafter has never been easier or faster.
Here the number is 1166 66 inches.
If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length.
Half building width minus 1 2 ridge thickness.
Just enter the dimensions of the roof rise and run to get started.
Includes result for hip valley factor slope factor and the roof slope in degrees.
The results are automatically fired.
The rise of the rafter.
Rafter length calculator calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.
Height of the scaffold.
