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Find the roof pitch angle and slope factor for different roof slopes, such as 4/12 or 4:12, using a conversion table and a calculator. Learn how to measure and display roof pitch on blue prints and plans.

How to Calculate 4/12 Pitch Rafter Length. To calculate the rafter length, input either the Run or the Rise into the calculator and click calculate. The system will automatically compute the rafter length for you. Note: "4 12 Pitch" typically refers to a slope or pitch of the roof, where 4 inches of rise occurs over 12 inches of run.

Easily calculate dimensions for a 4/12 pitch roof with our calculator. Determine rise, angle, square footage, and materials needed for roofing projects. ... Roof Sheathing, Pitch, Slope, Angle – 2025. A 4/12 pitch roof means that the roof rises 4 inches for every 12 inches of horizontal run. This pitch translates to an angle of about 18.43 ...

Roof Pitch Calculator Results (Explained) Pitch/Slope - Pitch and slope, often used interchangeably on the job site, refer to a roof's Pitch(X) represented as X in 12, where X is the number of inches of vertical rise for every 12 inches of horizontal run.If you know a roof's Pitch(X), you can use the information to lay out rafters with a Framing Square.

The Roof Pitch Angle Chart Calculator converts roof pitch ratios (e.g., 4:12) to degrees and vice versa.Ideal for contractors and DIYers, it includes a detailed chart, formulas, and step-by-step examples for accurate slope measurement. Use our free online calculator to calculate your roof pitch angle and explore detailed charts for reference.

Quick Reference: Common Roof Pitches in Degrees. Here are some of the most common standard roof pitches with their degree equivalents: 1/12 pitch in degrees is a 4.76° roof angle.. 2/12 pitch in degrees is a 9.46° roof angle.. 3/12 pitch in degrees is a 14.04° roof angle.. 4/12 pitch in degrees is an 18.43° roof angle.. 5/12 pitch in degrees is a 22.62° roof angle.

Learn what a 4/12 roof pitch means and see how it looks on real roofs. A 4/12 pitch is approximately 18.4 degrees and not very steep, as shown in the photos and diagram.

Standard Roof Pitches. Most roofs have a pitch in the 4:12 to 9:12 range. A pitch over 9:12 is considered a steep-slope roof, between 2:12 and 4:12 is a low-slope roof, and less than 2:12 is a flat roof. The table below shows standard roof pitches and the equivalent grade and angle in degrees and radians for each.

The Roof Pitch Calculator determines roof slope, angle, and ratio (e.g., 4/12) using rise and run measurements. Ideal for contractors and DIYers, it supports metric (meters, centimeters) and imperial (feet, inches, yards) units. ... For example, a 4/12 pitch means the roof rises 4 inches for every 12 inches of horizontal distance. Understanding ...

4/12 roof pitch to angle = 18.43 degrees equivalents. Tags. 4 on 12 roof pitch 4/12 roof pitch 4/12 roof slope Measure roof pitch Roof pitch example. Facebook Twitter Pinterest. Related Articles. The Pros and Cons of Aluminum Roofing. June 8, 2020. Select the best Roof Trusses and budget amount.

S is the span of the roof (ft or m) θ is the angle of the roof pitch (degrees) To calculate the length of the rafter, divide the span of the roof by the cosine of the angle of the roof pitch. For a 4/12 pitch roof, the angle is typically 18.43 degrees. What is a 4/12 Pitch Roof?

The 4/12 Pitch Roof Calculator is designed for construction professionals, architects, and DIY enthusiasts to calculate the angle of a roof with a 4/12 pitch. A 4/12 pitch means that the roof rises 4 inches for every 12 inches of horizontal run.

Roof pitch angle and slope factor chart for slate, tile, shingle and metal roofing. Custom Architectural Sheet Metal Fabrication Our Craftsmen are Copper and Zinc Specialists! ... 4:12 pitch 18.43° 1.0541 1.4530 5:12 pitch 22.62° 1.0833 1.4743 6:12 pitch 26.57° 1.1180 1.5000 7:12 pitch 30.26° 1.1577 ...

A 4/12 is a roof slope that rises by 4 inches for every 12 inches across. This forms an angle of 18.5° between the horizontal section and the roof, and creates a gentle incline that is seen as a midpoint between a low-pitch and medium-pitch roof.

4 on 12 roof pitch. The 4/12 roof pitch is the most common residential roof pitch. it is step enough to shed water quickly and also being comfortable for walkable. 4/12 roof pitch express in fraction, percentage, ratio or in angle. Roof pitch, or slope, is a measure of vertical rise to horizontal distance or run expressed in inches per foot.

Finding roof pitch is an easy process that only comes down to measuring the angle of your roof. Roof pitch is commonly defined as the ratio of the roof’s vertical rise to its horizontal run, usually abbreviated as “X:12.” A pitch of 4:12, for example, means the roof goes up 4 inches for every 12 inches it runs horizontally.

4/12 pitch roof angle:- in this regard, “what is a 4/12 pitch roof angle?”, you can convert this in two easy steps:- 1) calculate the ratio of pitch such as pitch = rise/run such as 4/12 = 0.333, 2) find the inverse tangent of pitch to get the angle in degrees, such as tan inverse of pitch = tan-1(0.333) = 18.43°, thus a roof pitch of fraction 4/12, 4 over 12, or “4 in 12” slope, or ...

The roof pitch, also known as roof slope or roof angle, refers to the steepness or incline of a roof. It is typically expressed as a ratio, a fraction, or in degrees, indicating the vertical rise in inches for every horizontal foot. ... However, a common minimum pitch for a lean-to roof is around 1/4:12 (1/4 inch of rise per 12 inches of run ...

How to use a roof pitch to degrees calculator: Input the roof pitch ratio in the format "X:Y" (e.g., 4:12). Click the "Convert" button. The calculator calculates the equivalent angle in degrees and displays the result. Example calculation: If you input a pitch ratio of 4:12, the calculator will convert it to an angle of approximately 18.43 degrees.

Think of roof pitch as the hat angle for your house. It’s the secret sauce behind how steep your roof is or, in technical terms, the vertical rise over a horizontal run. Architects and builders often express this as a ratio, like 4:12, meaning for every 12 horizontal inches, the roof rises 4 inches. It affects drainage.