Convert decimal degrees to degrees, minutes and seconds with rounding control.
Each conversion step takes the fractional remainder and multiplies by sixty. Rounding the seconds introduces a small error, which the round-trip figure quantifies. Rounding seconds to whole numbers loses up to fifteen metres of precision, which matters for property boundaries but not for navigation.
DMS Coordinate
Degrees is the integer part; minutes and seconds come from successive multiplication by 60
Degrees is the integer part; minutes and seconds come from successive multiplication by 60 Each conversion step takes the fractional remainder and multiplies by sixty. Rounding the seconds introduces a small error, which the round-trip figure quantifies.
Rounding seconds to whole numbers loses up to fifteen metres of precision, which matters for property boundaries but not for navigation.
This calculator takes 2 inputs: Decimal degrees, Decimal places on seconds. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.