Angle calculator - result

The Angle Calculator allows conversions of the angles entered in degrees, minutes, and seconds to the decimal number, radians back and forth. It is also possible to evaluate simple numerical operations - an addition of angles, subtracting angles, angle normalization to interval <0,360°> or <-180°,180°>, etc. Degrees (°), minutes ('), seconds (") to decimal degrees angle converter and back. Enter the angle in degrees, minutes, and seconds, and press the Convert button. Angle units - do not mix with time seconds, minutes, or temperature degrees Celsius or °F.

Result:

-pi/2 = -90° = -1.5708 rad = -1/2 π rad = -100 grad = -0.25 turns

Normalized angle at a interval <0; 360> :

-pi/2 = 270° = 4.71239 rad = 3/2 π rad = 300 grad = 0.75 turns

Basic knowledge of angle units

The basic definition is that the full angle is 1 rotation (one turn) = 360° (degrees) = 2π radians = 400 grads (gons). One degree is 60 minutes and one angle minute is 60 seconds.

see Plane angle - wiki

Practice problems:

60°15'45"     pi/2     55.5     5 min + 16 min     3/2 pi     60° + 45" -12'     pi/2 + 60°     5 rad + 45°50'     3 * 12pi     pi/2 - pi/3     -pi/2     3*360     60°15'45" - 15'