This page
offers utility programs which perform data conversions of
all kinds.
Convert
A windows freeware program that performs numerous unit conversions including
distance, speed, temperature, energy, flow, force, computer storage, and more.
UTM-Lat/Lon Conversion
DOS based BLM bi-directional UTM-Latitude/Longitude conversion program
(NAD, 1927)
State Planes-Lat/Lon Conversion DOS based BLM bi-directional State Plane-Latitude/Longitude conversion program.
MICRODEM A website offering free software to handle, display and merge electronic maps; also with conversion routines between NAD27 and NAD83 as well as other world coordinate systems.
Corpscon Another website offering free software for coordinate conversions in various coordinate systems.