quialo.

Angle Converter

Result
Enter a value to convert.

Convert an angle between degrees, radians, gradians, and turns in one place. Type a value, pick the units you want to convert from and to, and the result updates instantly. The math uses Math.PI directly, so conversions like 180 degrees to radians stay precise.

How to use

  1. Type the angle you want to convert into the Value field.
  2. Choose the unit you are converting from in the From selector.
  3. Choose the unit you want the answer in using the To selector.
  4. Read the converted value in the Result panel, which updates as you type.
  5. Use Swap to flip the two units, or Copy result to copy the answer.

Examples

  • 180 degrees converts to 3.14159265 radians.
  • 1 turn converts to 360 degrees.
  • 90 degrees converts to 100 gradians.

FAQs

How many radians are in 180 degrees?
180 degrees equals pi radians, which is about 3.14159265. A full circle of 360 degrees equals 2 times pi radians.
What is a gradian?
A gradian (also called a gon or grade) divides a right angle into 100 parts, so a full circle is 400 gradians. It is used in some surveying and engineering work.
What does a turn measure?
A turn is one full rotation around a circle. One turn equals 360 degrees, 400 gradians, or 2 times pi radians.
How do I convert degrees to gradians?
Multiply degrees by 10 then divide by 9. For example, 90 degrees times 10 divided by 9 equals 100 gradians.
Does the converter handle negative angles?
Yes. Negative values are converted normally, so negative 90 degrees becomes negative half of pi radians.
Why might the result show many decimal places?
Radian values are often irrational, so the converter shows up to eight significant digits and trims trailing zeros to keep the answer readable.

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