This calculator is used to add and subtract angles in the form Degrees - Minutes - Seconds (DMS). Each degree is divided into 60 minutes, and each minute further divided into 60 seconds. This form is used in astronomy and defining latitude and longitude.

Example 34° 24' 16''

This is read as "34 degrees 24 minutes 16 seconds".

The calculator adds or subtracts input values from the running total in the top window.

- Enter a value in three parts: the degrees in left field, minutes in the middle, and seconds in the right field.
- Press "enter" to enter the input value into the running total, replacing what was there.
- OR: Press either the Plus or Minus button to add/subtract it from the running total.
- Negative inputs should have a minus sign in front of the degrees: -12° 23' 31''
- Small negative numbers (less than one degree) are entered with -0 in the degrees field:

Example: -0° 23' 0''

Whenever a result is calculated it is also converted to decimal degrees. This is displayed just below the result window

- Vertical angles
- Complementary angles
- Supplementary angles
- Linear pair
- Adjacent angles
- Corresponding angles
- Alternate interior angles
- Alternate exterior angles
- Interior angles of a transversal
- Exterior angles of a transversal

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All rights reserved