Mapping Scale Converter

These types of maps would typically be used in marine and aviation operations. Enter the scale fraction of your map; the default is 250,000, a terminal area chart. If the map scale is 1:500,000, you should enter the 500000 in the box. Then click on Convert.

Typical aviation scales are:

Aviation Planning Chart 1:3400000
Jet Navigation Chart 1:2000000
Operational Navigation Chart (WAC) 1:1000000
Tactical Pilotage chart (sectional - VNC) 1:500000
Joint Operations Graphic (terminal area chart - VTA) 1:250000
Low altitude, small area maps vary greatly in scales

Typical marine scales are:

Small coastal area and inland waters, 1:10000, 1:20000, 1:30000 or 1:40000
Deep water navigation charts have much larger scales that vary greatly in scale size

Required Data Entry
1: Map Scale Fraction
   
Calculated Results
English
inches = 1 statute mile
inches = 1 nautical mile
statute miles per inch
nautical miles per inch
Metric
centimeters = 1 kilometer
kilometers per centimeter