Decimal Degrees to Degrees, Minutes, Seconds Converter
Convert decimal degrees to degrees, minutes, and seconds (DMS) using a trusted, transparent calculator aligned with geospatial conventions.
Decimal Degrees Input
How to Use This Converter
Enter a decimal degree value to instantly see the equivalent degrees, minutes, and seconds output. The converter mirrors how surveyors and navigators split the whole number and fractional parts to arrive at DMS notation.
Methodology
We isolate the whole-number portion of the decimal degrees as the degrees. The remaining fractional portion is multiplied by 60 to yield minutes. Any leftover fraction from the minutes calculation is again multiplied by 60 to provide seconds. Seconds are rounded to two decimal places to keep precision manageable.
Data Source and Methodology: All conversions rely on the standard relationship between decimal degrees and sexagesimal units (degrees, minutes, seconds) used in geospatial systems worldwide.
How the conversion works
- Degrees = integer part of the decimal degree value.
- Minutes = integer part of the fractional portion × 60.
- Seconds = (remaining fraction after minutes conversion) × 3600, rounded to two decimal places.
Step-by-step example
For 123.456 decimal degrees you will see:
- Degrees = 123
- Minutes = 27 (0.456 × 60)
- Seconds = 16.56 ((0.456 - 0.27) × 3600)
Frequently Asked Questions (FAQ)
What is decimal degrees?
Decimal degrees (DD) express latitude and longitude geographic coordinates as a decimal fraction rather than in degrees, minutes, and seconds.
How do I convert DD to DMS?
To convert decimal degrees to DMS, split the decimal value into its integer and fractional parts, convert the fractional portion to minutes by multiplying by 60, and convert any leftover decimal from the minutes to seconds by multiplying by 60 again.