Angle Converter
Convert angle units: degrees (°), radians, and gradians
Full Angle Conversion Table
Degree (°)
1
Arcminute (′)
60
Arcsecond (″)
3,600
Radian (rad)
0.01745329252
Gradian (grad)
1.111111111
How to Convert Angles
Enter the angle value and select units. Instantly calculates degrees↔radians, degrees↔gradians, and more.
What are degrees, radians, and gradians?
1 revolution = 360° = 2π radians ≈ 6.2832 rad = 400 gradians (grad). Radians are used in math/engineering; degrees in everyday use.
Frequently Asked Questions
How many degrees is 1 radian?
1 radian is approximately 57.2958 degrees. (180 ÷ π)
How many radians is 180 degrees?
180 degrees is π radians (approximately 3.14159 rad).
How many radians is 90 degrees?
90 degrees is π/2 radians (approximately 1.5708 rad).
What is a gradian (grad)?
A gradian divides a full rotation into 400 equal parts. Right angle = 100 grad. Used in civil engineering and surveying.
How many degrees is 1 arcminute?
1 arcminute is 1/60 of a degree. 1 degree = 60 arcminutes = 3,600 arcseconds.