GPS formats

[RoamingKat]

I have a new Garmin. Nuvi 2597

It does not provide a gps coordinate format 

Nnn.nnnnnn

Notice the 6 digits after the decimal point.

  Only.   Nnn.nnnnn. (5) digits.

How do I convert?

[tx2sturgis]

The final digit is insignificant.

If you are entering a lat or long, simply ignore the last digit.

In other words, 101.123456 printed on a website

is the same value as 101.12345 entered in your GPS.

[tx2sturgis]

BTW, that last digit, digit number 6, adds the last 18 inches of location precision...generally not needed for most of us just trying to find a nice campsite. 

I don't think many normal GPS units that we buy off the shelf and use for driving can even operate at that level of precision.

[Scott7022]

What Tx2 said. Only Gunny and I are interested in tighter grid references.