DMS to Decimal Degrees

°
′
″
Conversion

Convert degrees, minutes, seconds (DMS) to decimal degrees and vice versa.

Formula

decimal° = D + M/60 + S/3600
  • Reverse: D = floor(dec°); M = floor((dec° − D) × 60); S = ((dec° − D) × 60 − M) × 60.

DMS to Decimal Degrees Example

Inputs
  • Degrees: 40 °
  • Minutes: 26 ′
  • Seconds: 46 ″

40 + 26/60 + 46/3600 = 40.4461°

Frequently asked questions

How do I use the DMS to Decimal Degrees?
Enter the value in the input field and the result updates immediately.
How accurate is this converter?
Uses internationally recognised conversion factors. Results are rounded to the displayed decimal places.
Can I verify this manually?
Yes — apply the formula shown above step by step.