What is a 6/12 pitch in degrees?

A 6/12 pitch is about 26.57 degrees.

Free roof slope tool

Roof Pitch to Angle Calculator

This roof pitch to angle calculator converts pitch into degrees using the rise and run of the roof. It is useful when you want a fast angle reading for framing, estimating, or comparing different roof slopes.

Enter the pitch as rise over run, such as 6 and 12 for a 6/12 roof. The calculator will show the roof angle in degrees, the slope ratio, the percentage grade, and the pitch format.

Convert pitch fast Go from rise and run to degrees in one click.

Useful framing reference See angle, ratio, and percentage grade together.

Simple input Works with common pitch formats like 4/12, 6/12, and 12/12.

Pitch to Degrees Converter

Enter your roof pitch below.

Roof pitch rise

First number in the pitch, such as 6 in a 6/12 roof.

Roof pitch run

Second number in the pitch, usually 12.

Roof angle in degrees —

Roof pitch —

Slope ratio —

Percentage grade —

What This Roof Pitch to Angle Calculator Does

Roof pitch is commonly written as rise over run. The angle in degrees is simply another way to express that same slope. This tool converts roof pitch into a usable angle so you can understand the steepness of a roof more easily.

For example, a 6/12 roof pitch means the roof rises 6 units vertically for every 12 units horizontally. That pitch equals about 26.57 degrees.

If you also need to calculate the full length of a rafter, see our rafter length formula guide.

Roof Pitch to Angle Formula

To convert roof pitch to degrees, use the inverse tangent of rise divided by run.

Angle in degrees = arctangent(Rise ÷ Run) Slope ratio = Rise ÷ Run Percentage grade = (Rise ÷ Run) × 100

This is the standard way to convert roof pitch to angle. A roof pitch to angle calculator simply performs this math for you and presents it clearly.

Worked Example

Example: Convert a 6/12 roof pitch to angle.

Step 1: Divide rise by run: 6 ÷ 12 = 0.5

Step 2: Take the arctangent of 0.5

Step 3: The result is about 26.57 degrees

Step 4: Percentage grade = 0.5 × 100 = 50%

This is why a 6/12 pitch is often described as a moderate roof slope. It is steep enough to shed water well while still being a common residential roof pitch.

Common Roof Pitch to Angle Table

Here are some common roof pitches and their approximate angle in degrees.

Roof pitch	Angle in degrees	Slope ratio	Percentage grade
3/12	14.04°	0.25	25%
4/12	18.43°	0.3333	33.33%
5/12	22.62°	0.4167	41.67%
6/12	26.57°	0.5	50%
7/12	30.26°	0.5833	58.33%
8/12	33.69°	0.6667	66.67%
9/12	36.87°	0.75	75%
10/12	39.81°	0.8333	83.33%
12/12	45.00°	1.0	100%

FAQ

How do you convert roof pitch to angle?

Divide the rise by the run, then take the arctangent of that number. The result is the roof angle in degrees.

What is a 6/12 roof pitch in degrees?

A 6/12 roof pitch is about 26.57 degrees.

What is a 12/12 roof pitch in degrees?

A 12/12 pitch equals 45 degrees because the rise and run are the same.

Why use degrees instead of pitch?

Degrees can be easier to compare and may be more useful when working with geometry, tools, or design references.

Is pitch the same as slope?

They are closely related. Roof pitch is usually rise over run, while slope ratio is the decimal version of the same relationship.