Coordinate Converter

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

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Worked Example & Common Values

Below is a sample worked calculation demonstrating how Coordinate Converter processes input data instantly inside your browser.

Sample Input Start: Los Angeles (34.0522, -118.2437), End: New York (40.7128, -74.0060)

Computed Result Geodesic Great-Circle Distance: 3,935 Kilometers (2,445 Miles)

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About This Tool

This DMS to Decimal Degrees Calculator allows you to quickly convert geographic coordinates from Degrees, Minutes, Seconds (DMS) format to Decimal Degrees format. Simply enter the degrees, minutes, seconds, and direction (N/S/E/W) for latitude or longitude, and get the precise decimal equivalent. Perfect for cartographers, surveyors, GIS professionals, and anyone working with GPS coordinates or mapping data. The tool performs accurate mathematical conversions with proper handling of directional signs (positive for N/E, negative for S/W).

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How to Use

Enter the degrees value in the first input field (0-90 for latitude, 0-180 for longitude)
Enter the minutes value (0-
Enter the seconds value (0-
..)
Select the direction (N/S for latitude, E/W for longitude)
Click the 'Calculate Decimal Degrees' button
View the converted result displayed in decimal degrees format

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.

How accurate is the conversion?

The conversion is mathematically precise, handling decimal seconds up to high precision. The formula used is: Decimal Degrees = Degrees + (Minutes/60) + (Seconds/3600), with appropriate sign based on direction.

What directions should I use for latitude and longitude?

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 decimal degrees back to DMS?

This tool currently only converts DMS to Decimal Degrees. For the reverse conversion, you would need a separate Decimal Degrees to DMS calculator.

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