Cos Calculator

Calculate the cosine of any angle.

Calculate

Enter your values below.

Result

cos(angle)
0

Formula used

cos(angle), calculated after converting to radians if needed.

Example: cos(60°) = 0.5.

How to use this calculator

  1. Enter Angle.
  2. Choose Angle unit.
  3. Press Calculate to see your result instantly.

FAQ

Frequently asked questions

What is the range of cosine's output?

Cosine always returns a value between −1 and 1.

What is cos(0)?

1, the maximum value.

What is cos(90°)?

0.

Can I find the angle from a cosine value instead?

Yes, use the Arccos Calculator.