Signed degrees (negative for west/south), non-negative minutes and seconds—decimal degrees.
The whole degrees may be negative to indicate south/west style angles; minutes and seconds must satisfy 0 ≤ minutes < 60 and 0 ≤ seconds < 60. Decimal degrees = sign(degrees) × (|degrees| + minutes÷60 + seconds÷3600).
This calculator uses plain decimal numbers. If a result looks wrong, check whether you used a comma instead of a dot (or vice versa) where the field expects one.