Understanding the conversion from degrees to radians is crucial in geometry and trigonometry. Radians are often used in more advanced mathematical calculations and programming. This guide will walk you through the process of converting degrees to radians, providing a clear and concise explanation along with practical examples.

Definition of Degrees and Radians

Before delving into the conversion, let’s define what degrees and radians are. Degrees are a common unit of measuring angles, with a full circle being 360°. Radians, on the other hand, measure angles using the radius of a circle. A complete circle is represented by 2π radians.

RepresentationDegrees are denoted by the symbol ° and are commonly used in everyday measurements of angles. A full circle is divided into 360 degrees, representing a complete revolution.Radians are denoted by the symbol “rad” and are based on the radius of a circle. One radian is defined as the angle subtended when you traverse an arc length equal to the radius.
Visual RepresentationVisualize a circle, and you can imagine it being divided into 360 equal parts, each corresponding to one degree.Imagine a circle with a radius of one unit. If you travel along the circumference for a distance equal to the radius, the angle subtended at the center is one radian.
Practical UseDegrees are often used in everyday situations, such as navigating with a compass, specifying temperatures on a thermostat, or describing directions.
Relation to CircumferenceSince the circumference of a circle is
2π times its radius, a full circle (360°) is equivalent to 2π radians.
Mathematical SignificanceRadians are particularly useful in mathematical calculations, especially in calculus and trigonometry. They simplify many formulas and theorems, making them more elegant and applicable.

Understanding the relationship between degrees and radians is crucial for effective conversion. One complete revolution around a circle, measured in degrees, is equal to 360° or 2π radians. This fundamental connection forms the basis for converting between these two angular units.

Degrees to Radians Formula

The formula for converting degrees to radians is straightforward:

The formula of converting degrees to radians

Here, π (pi) is a mathematical constant approximately equal to 3.14. This formula allows us to convert any angle measured in degrees to its equivalent in radians.

Conversion Steps

Let’s break down the conversion process into simple steps:

Step 1: Write down the numerical value of the angle given in degrees.

Step 2: Multiply the numerical value from Step 1 by π/180.

Step 3: Simplify the expression by canceling any common factors.

Step 4: The result obtained after simplification is the angle measure in radians.

Degrees to Radians Chart

For quick reference, here’s a chart showcasing some common angles in both degrees and radians:

Angle in DegreesAngle in Radians


Converting degrees to radians is a fundamental skill in mathematics. By following the steps outlined in this guide, you can confidently perform this conversion for various angles. Remember to practice with different examples to reinforce your understanding. As you delve further into mathematical concepts, the ability to convert between degrees and radians will prove invaluable.


How do we convert degrees to radians?

To convert the value of the angle in degrees to its equivalent radians, multiply the given value by π/180. For instance, the value of 180 degrees is equivalent to π radians.

What is the formula to convert radians into degrees?

The formula to convert the value of an angle from radians to degrees is to multiply the given value by 180/π. For example, the value of 2π is equal to 360 degrees.

How to convert 30 degrees to radians?

Multiply 30 degrees by π/180: (30 \times (\frac{\pi}{180}) = \frac{\pi}{6}). Hence, 30 degrees is equal to (\frac{\pi}{6}) in radians.

What is the value of 1 radian?

One radian is approximately equal to 57.2958 degrees or 57 degrees, 17 minutes, and 44 seconds.

How is pi radians equal to 180 degrees?

One complete counterclockwise revolution in an XY plane is equal to 2π radians or 360 degrees. Thus, we can express it as an equation: (2\pi = 360^\circ) or (\pi = 180^\circ). Therefore, pi is equal to 180 degrees.

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