NOTE: The GAF will normally be less than 1 (i.e. 0.99995678). For locations near the outside edges of the zone, the GAF can be greater than 1. (i.e. 1.00001234). Be sure to verify the GAF before applying.
Grid to Ground
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Grid Northing
Grid Easting
GAF
Origin Northing
Origin Easting
OUTPUT
Ground Easting
Ground Northing
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Calculate
Reset
(1/X)
NOTE: The GAF will normally be less than 1 (i.e. 0.99995678). For locations near the outside edges of the zone, the GAF can be greater than 1. (i.e. 1.00001234). Be sure to verify the GAF before applying.
Coordinates to GAF
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Ground Northing
Ground Easting
Grid Northing
Grid Easting
OUTPUT
N-GAF
(1/X)
E-GAF
(1/X)
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Calculate
Reset
NOTE: The GAF will normally be less than 1 (i.e. 0.99995678). For locations near the outside edges of the zone, the GAF can be greater than 1. (i.e. 1.00001234). Be sure to verify the GAF before applying.
GAF Comparison
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GAF-1
(1/X)
GAF-2
(1/X)
Distance
OUTPUT
Distance-1
Distance-2
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Calculate
Reset
GAF on NGS
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Ground to Grid
Close
Grid to Ground
Close
Coordinates to GAF
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GAF Comparison
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Free Stuff
Written by Surveyors for Surveyors, Engineers and aspiring Students.
I have several decades of land surveying and civil engineering experience. I was first licensed in 1983 in Wyoming and Utah. In 1986 I became licensed in Arizona. I was appointed a United States Mineral Surveyor in 1986. I have been practicing Land Surveying in Arizona since 1990. I became a Certified Federal Surveyor in 2007. I have several decades of computer programming experience related to computer aided drafting and coordinate geometry. I am the pioneer in the use of Digital Signatures in Arizona for professional documents.