Decimal Degrees to DMS Converter

About This Tool

This tool accepts a single decimal degree value and returns a DMS representation. It supports both latitude and longitude workflows and can emit a conventional DMS string as well as a structured breakdown for downstream processing.
The core algorithm converts the absolute value of the input into degrees, minutes, and seconds using the standard equations: D = floor(|DD|); M = floor((|DD| - D) * 60); S = ((|DD| - D) * 60 - M) * 60. The sign or coordinate_type determines hemisphere (N/S for latitude, E/W for longitude). Optional precision controls round-off to the requested seconds.
Outputs include a human-readable DMS string such as 73°58'57.12", plus a data object with degrees, minutes, seconds, and sign. The tool validates inputs (numeric, within ±180°, finite) and returns errors when invalid but does not render UI-level messages.
Typical use cases include exporting to GIS databases, preparing metadata for maps, validating user-entered coordinates, and teaching angular measurements. The tool aims for interoperability with standard GIS formats and supports locale-neutral formatting.

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