Decimal Degrees and DMS Converter
Convert with explicit units, definitions and assumptions.
Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Angle notation conversion only; no datum or coordinate reference system change. Fields for the unselected direction are ignored but remain visible.
Example Calculation
- Direction: Decimal degrees to DMS
- Decimal degrees: -73.9857 °
- Whole degrees: 73
- Minutes: 59
- Seconds: 8.52 arcsec
- DMS sign: Negative (S / W)
−73.9857° equals −73° 59′ 8.52″.
Frequently asked questions
How do I use this calculator?
Enter direction, decimal degrees, whole degrees, minutes, seconds, dms sign. The result updates automatically. Use Reset to restore the example values.
What method does it use?
absolute degrees = D + M/60 + S/3600; sign applies to the whole angle. Angle notation conversion only; no datum or coordinate reference system change. Fields for the unselected direction are ignored but remain visible.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.