DMS to DD Converter

Convert DMS (Degrees, Minutes, Seconds) coordinates to DD (Decimal Degrees) format instantly with this free online tool.

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About This Tool

This DMS to DD converter allows you to easily convert geographic coordinates from Degrees, Minutes, Seconds (DMS) format to Decimal Degrees (DD) format. Simply enter the degrees, minutes, and seconds values along with the direction (N/S for latitude, E/W for longitude) and get instant, accurate decimal degree results. The tool handles both positive and negative directions automatically and includes validation to ensure proper coordinate input. Perfect for GIS work, mapping, GPS data processing, and any application requiring coordinate format conversion.

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How to Use

Enter the degrees value in the first input field
Enter the minutes value in the second input field (0-
Enter the seconds value in the third input field (0-
..)
Select the direction (N/S for latitude, E/W for longitude)
Click the 'Convert to Decimal Degrees' button
View the result in decimal degrees format below
Use the 'Reset' button to clear all fields and start over

Frequently Asked Questions

Find Quick Answers

What is DMS format?

DMS stands for Degrees, Minutes, Seconds. It's a common format for expressing geographic coordinates where 1 degree = 60 minutes and 1 minute = 60 seconds.

What is DD format?

DD stands for Decimal Degrees. It's a simpler coordinate format that expresses latitude and longitude as decimal numbers, making it easier for calculations and digital systems.

How accurate is the conversion?

The conversion is mathematically precise. The tool calculates decimal degrees using the formula: DD = degrees + (minutes/60) + (seconds/3600), with appropriate sign based on direction.

What directions should I use?

For latitude (north-south), use N for positive values and S for negative values. For longitude (east-west), use E for positive values and W for negative values.

Can I convert negative DMS coordinates?

Yes, simply enter the absolute values for degrees, minutes, and seconds, then select the appropriate direction (S or W) to get a negative decimal degree result.

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