DMS to DDM Converter
A free, browser-based converter. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter DMS value
Coordinate / angle
°′″
Sign
Results
Enter a value and press Convert to see the results in DD, DMS and DDM.
How to use this calculator
- Enter the coordinate in degrees-minutes-seconds (e.g. 40 26 46.3).
- Press Convert.
- Read the degrees-decimal-minutes value.
How it works
Converts degrees-minutes-seconds (DMS) to degrees-decimal-minutes (DDM): the degrees stay, and seconds ÷ 60 are added to the minutes.
Worked example
40° 26′ 46.3″. = 40° 26.772′.
Frequently asked questions
Do I lose precision converting between formats?
No — all three formats describe the same angle. Only the on-screen rounding changes.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.