Roof Pitch Conversion Chart

Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.

Roof pitch conversion chart.

The roof slope factor chart also consists of conversion factors to determine the slope of the roof. In essence a roof pitch chart is provided as a rough guide usually by a roofing company to help you see what the average roof pitches tend to be. Divide the first part of the ratio by 12 to work out the pitch. For example if you measure 4 inches the pitch of your roof is 4 12.

Find the inverse tangent of the pitch to find the angle in degrees. Image 1 12 to 12 12 roof pitch 7 12 pitch. Marvel at your mathematical. Roof pitch is used to describe the slope or angle of the roof.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Visit this page on your phone to directly measure pitch and angles. There are many tools out there. We included a roof pitch chart below the 7 12 example image and the calculator below that.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. A 10 slope roof should not be confused with a 10 pitch roof as a 10 slope roof means that the roof rises by ten inches for every foot of run. Directly measure roof pitch angle and calculate pitch and angle on phone or tablet. Usually they come in the form of a roof pitch diagram chart but other times it will be presented to you in a conversion format.

A 12 12 pitch roof has a pitch angle of 45. Check your results with the omni roof pitch calculator. Angle the angle of a roof is the same as the roof s slope except instead of being. Roof pitch degree table.

If this isn t practical then perform the same measurement on the underside of the roof. 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. Select inches to enter decimal inches or millimeters for metric. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.

Enter base length to calculate rise and diagonal for current pitch angle. The combination of two numbers are used to display or show the roof pitch. To convert between american roofing ratios and pitch degrees follow these steps. On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length.

Set bevel gauge directly from phone or tablet screen. Roof pitch calculator results explained. Roof angles and rafter plumb cuts. Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.

The headache of using pythagoras and trigonometry can be spared by making use of these charts.