🧭 Degrees Minutes Seconds Calculator
Convert coordinates or angles between degrees-minutes-seconds (DMS) format and decimal degrees.
What is DMS format?
Degrees-minutes-seconds (DMS) is a traditional way of expressing angles and geographic coordinates, such as latitude and longitude, by dividing each degree into 60 minutes and each minute into 60 seconds. Decimal degrees express the same angle as a single decimal number, which is easier for GPS devices and mapping software to process.
How this calculator works
Choose your conversion direction. To convert DMS to decimal degrees, the calculator adds the minutes divided by 60 and the seconds divided by 3600 to the whole degrees. To convert decimal degrees back to DMS, it takes the whole number part as degrees, then converts the remaining fraction into minutes and seconds by successively multiplying by 60.
- Formula (DMS → DD): Decimal Degrees = Degrees + (Minutes / 60) + (Seconds / 3600)
- 1 degree = 60 minutes = 3,600 seconds
This conversion is commonly used for GPS coordinates, surveying, navigation, and astronomy. For negative coordinates (south latitude or west longitude), enter the degrees value as negative.