150 Degrees to Radian – Full Calculation Guide

150 degrees equals approximately 2.618 radian.

To convert degrees to radian, multiply the degree value by π divided by 180. For 150 degrees, the calculation is 150 × π / 180, which simplifies to 5π / 6, resulting in about 2.618 radians. This process transforms the angle measurement from degrees into the radian system used in mathematics and physics.

Conversion Result


Result in radian:

Conversion Formula

The formula to convert degrees into radian is: Radian = Degrees × π / 180. This works because a full circle is 360 degrees or 2π radians. Dividing by 180 converts degrees into a fraction of the circle in radian measure, aligning with the circle’s arc length proportional to the angle in radians.

Conversion Example

  • Convert 90 degrees to radian:
    • Apply formula: 90 × π / 180
    • Simplify: π / 2
    • Approximate: 1.5708 radians
  • Convert 45 degrees to radian:
    • Apply formula: 45 × π / 180
    • Simplify: π / 4
    • Approximate: 0.7854 radians
  • Convert 180 degrees to radian:
    • Apply formula: 180 × π / 180
    • Simplify: π
    • Approximate: 3.1416 radians
  • Convert 30 degrees to radian:
    • Apply formula: 30 × π / 180
    • Simplify: π / 6
    • Approximate: 0.5236 radians

Conversion Chart

Degrees Radians
125.0 2.1817
130.0 2.2689
135.0 2.3562
140.0 2.4435
145.0 2.5307
150.0 2.6180
155.0 2.7053
160.0 2.7925
165.0 2.8798
170.0 2.9671
175.0 3.0543

This chart helps you quickly see the radian equivalent for angles between 125 and 175 degrees. To use, find the degree value in the first column and read across to see the corresponding radian in the second column.

Related Conversion Questions

  • How many radians are in 150 degrees?
  • What is the radian measure of 150 degrees?
  • Convert 150 degrees into radians manually?
  • Is 150 degrees equal to about 2.62 radians?
  • How do I convert 150 degrees to a radian value?
  • What is the radians value when the angle is 150 degrees?
  • How can I turn 150 degrees into radians in a calculator?

Conversion Definitions

Degrees are units measuring angles based on dividing a circle into 360 equal parts, commonly used in navigation and geometry for easy angle representation.

Radian is a unit measuring angles based on the radius of a circle, with one radian representing the angle when the arc length equals the radius, making it fundamental in higher mathematics and physics calculations.

Conversion FAQs

Why is π involved in degree to radian conversion?

Because π radians equal 180 degrees, π serves as the key constant linking degrees and radians, enabling straightforward conversion through multiplication or division by π.

Can I convert degrees to radians without using π?

While π appears directly in formulas, you can approximate the conversion using decimal equivalents, but the exact conversion always involves π for precision and correctness.

What is the significance of the 180 in the formula?

180 comes from the fact that a straight line is 180 degrees, and it acts as the divisor to normalize degrees into the radian system, which is based on the circle’s half-turn or π radians.

How accurate is the approximation of radians from degrees?

The approximation depends on how many decimal places you use; typically, four decimal places are precise enough for most calculations, but longer decimals increase accuracy.

Is the conversion from degrees to radians reversible?

Yes, converting from radians back to degrees involves multiplying by 180 and dividing by π, making the process reversible for accurate angle measurement conversions.