# Coordinates Converter (DD, DMS, DDM)

URL: https://speedycalculator.com/calculators/conversion/coordinates-converter/
Last updated: 2026-10-25

> The coordinates converter translates latitude and longitude between decimal degrees (40.446111), degrees-minutes-seconds (40° 26′ 46″ N) and degrees-decimal-minutes (40° 26.7667′ N). Type either format; the hemisphere letters N, S, E and W are understood. Everything is calculated in your browser; nothing you type is sent to our server.

## Inputs

- Latitude
- Longitude

## Results

- Decimal degrees
- Latitude (DMS)
- Longitude (DMS)
- Degrees, decimal minutes

## Formula

```
DD = degrees + minutes ÷ 60 + seconds ÷ 3,600 (negative for S and W)
```

## Explanation

GPS units, maps and apps use different coordinate formats: Google Maps shows decimal degrees, nautical charts use degrees and decimal minutes, and land surveys often use degrees, minutes and seconds.

### How to use the Coordinates Converter

- **Latitude**
- **Longitude**

Everything runs in your browser, so results appear instantly and nothing you type is sent to a server.

### How it works

Your input is parsed (with or without symbols), checked against the valid range and then written in all three formats.

## Worked example

Inputs — Latitude: 40° 26′ 46″ N; Longitude: 79° 58′ 56″ W.

Results — **Decimal degrees = 40.446111, -79.982222**; Latitude (DMS) = 40° 26′ 46.00″ N; Longitude (DMS) = 79° 58′ 56.00″ W; Degrees, decimal minutes = 40° 26.7667′ N, 79° 58.9333′ W.

## FAQ

**Which format does Google Maps use?**
Decimal degrees, e.g. 40.446111, -79.982222.

**Are south and west negative?**
Yes, in decimal degrees.

**How precise is 6 decimal places?**
About 0.1 m.

**What formula does the Coordinates Converter use?**
DD = degrees + minutes ÷ 60 + seconds ÷ 3,600 (negative for S and W).


## Sources

- [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)