Angle Converter
Angle Converter
Angles are measured in different units depending on the field — degrees in everyday and navigation contexts, radians in mathematics and physics, gradians in some surveying traditions, and arcminutes/arcseconds for very precise angles like those in astronomy.
This tool converts between all six directly.
- Key factors: 1 radian ≈ 57.2958°; 1 gradian = 0.9°; 1 arcminute = 1/60°; 1 arcsecond = 1/3600°; 1 turn = 360°.
- Radians and π: a full circle is 2π radians, and 180° equals exactly π radians.
- Fully flexible: change either dropdown to convert between any two of the six supported angle units.
How do I convert degrees to radians?
Multiply the degree value by π/180, or select "Degrees" as From and "Radians" as To in this converter.
What is a gradian used for?
Gradians divide a right angle into 100 units instead of 90, which some surveying and military instruments use for simpler decimal math.
Angle Converter
Angles are measured in different units depending on the field — degrees in everyday and navigation contexts, radians in mathematics and physics, gradians in some surveying traditions, and arcminutes/arcseconds for very precise angles like those in astronomy.
This tool converts between all six directly.
- Key factors: 1 radian ≈ 57.2958°; 1 gradian = 0.9°; 1 arcminute = 1/60°; 1 arcsecond = 1/3600°; 1 turn = 360°.
- Radians and π: a full circle is 2π radians, and 180° equals exactly π radians.
- Fully flexible: change either dropdown to convert between any two of the six supported angle units.
How do I convert degrees to radians?
Multiply the degree value by π/180, or select "Degrees" as From and "Radians" as To in this converter.
What is a gradian used for?
Gradians divide a right angle into 100 units instead of 90, which some surveying and military instruments use for simpler decimal math.