**Approximate Metric Equivalents for
Degrees, Minutes, and Seconds**

At the equator for longitude and for latitude anywhere, the following approximations are valid:

- 1° = 111 km (or 60 nautical miles)
- 0.1° = 11.1 km
- 0.01° = 1.11 km (2 decimals)
- 0.001° =111 m
- 0.0001° = 11.1 m
- 0.00001° = 1.11 m
- 0.000001° = 0.11 m (7 decimals)

- 1' = 1.85 km (or 1 nautical mile)
- 0.1' = 185 m
- 0.01' = 18.5 m
- 0.001' = 1.85 m

- 30" = 900 m
- 15" = 450 m
- 3" = 90 m
- 1" = 30 m
- 1/3" = 10 m
- 0.1" = 3 m
- 1/9" = 3 m
- 1/27" = 1 m

If you report a position to the nearest 0.01° (two decimal places for latitude and longitude), you will only be accurate to around 1 km. While this is adequate for rough locations on a global scale, for detailed work it will be inadequate.

*Last revision 12/10/2017*