If you’d like to use our calculator, simply enter the height difference (in meters) and the horizontal distance between points on your roof (in meters). Calculating Roof Pitch Angle with a Calculator After calculating your angles, use our calculator below to see how many meters of roofing you’ll need to complete the job. For example, A = 42° and B = 32° would equal 74° as the angle of your roof (in degrees). Once you have both values, you can determine the total angle by adding them together and then converting them to degrees (or radians). If you’re trying to calculate roof pitch expressed in degrees for a Spanish style roof, the “A” value should be positive instead. When calculating roof pitch using these formulas, ensure that your “A” value is negative if it’s for a roof that slopes downwards. This will give you two distinct angles which, when added together equal 90° or π/2 if converting to radians. The formula looks like this:Ī = 12 * (h1 – h2) / (10 – h2), with “A” representing the angle in degreesī = 10 – A with “B” representing half of A Once you have the measurements of both sides of your roof surface area, you can use a simple formula to calculate your values for A and B in order to find out the degrees of the pitched roofs. To calculate roof pitch, there are different calculators available on the Internet. Calculate Roof Pitch Angle with a Different Formula
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