Our free online converters let you batch geocode ZIP codes and UK postcodes, and we also offer a range of individual converters. We developed the technologies behind these converters for our own products and decided to share them for others to use freely.
The Batch Converter is limited to 50,000 rows, and the KML converter approximately 32Mb.
Batch Geocoder & Converter
Geocode and Convert Spatial Data
Convert to lat-lon by dragging and dropping your file. Instructions.
Convert US ZIP codes, British postal codes, as well as degrees minutes and seconds, UTM, MGRS and BNG into decimal latitude & longitude. The system also recognizes 120,000 cities, 240 countries & territories, and the US states, in which case the capital’s coordinates are given.
Convert your files to KML
Convert Excel to KML, CSV to KML, SHP to KML, GPX to KML, KMZ to KML or DXF to KML by dragging and dropping your file. Instructions.
Drag and drop your file for quick KML conversion.
Our converter provides free file conversion from Excel to KML, CSV to KML, SHP to KML, GPX to KML, KMZ to KML and DXF to KML.
You can also use the drag and drop boxes below to geocode or convert your data.
Make sure your data is structured correctly (instructions) and wait a few moments for the result.
Convert ZIP codes to lat-lon
Batch geocode US ZIP codes by dragging and dropping your file. Use the 5-digit ZIP codes, without state abbreviation, e.g. 20500, in a column titled ZIP.
Convert postcodes to lat-lon
Batch geocode UK post codes by dragging and dropping your file.
Use full postcodes, e.g. EC2A 4BX, in a column titled Postcode.
Convert DMS to decimal
Convert coordinates in degrees, minutes and seconds to decimal by dragging and dropping your file. Use two columns titled Latitude and Longitude.
Get the decimal latitude and longitude for over 240 countries and territories (coordinates of the capital) to enable mapping. Use country names, 2-letter or 3-letter ISO codes and drag and drop your file. Use one column entitled Country.
Geocode US states
Get the decimal latitude and longitude for US states (and DC) to enable mapping. Simply use state names, or 2-letter abbreviations. The coordinates of the state capital are returned. Use one column entitled US State.
Get the decimal latitude and longitude for over 120,000 cities throughout the world to enable mapping.
Use two columns: City and Country, adding a US State column if the data features US cities.
Convert UTM to lat-lon
Convert Universal Transverse Mercator (UTM) coordinates to lat-long by dragging and dropping your file. Use one column entitled UTM listing the full coordinates, e.g. 30U 70198mE 5711981mN.
Convert MGRS to lat-lon
Convert Military Grid Reference System (MGRS) coordinates to lat-lon by dragging and dropping your file.
Use one column entitled MGRS listing the full coordinates, e.g. 42SUA5246314470.
Convert BNG to lat-lon
Convert British National Grid (BNG) coordinates to latitude and longitude by dragging and dropping your file.
Use two columns entitled Easting and Northing.
You can also use the drag and drop boxes below to convert a variety of files into KML.
Convert Excel to KML
Convert xls to kml by dragging and dropping your file. Please use decimal degrees and place the coordinates in two columns titled “latitude” and “longitude”.
Convert CSV to KML
Convert csv to kml by dragging and dropping your file. Please use decimal degrees and place the coordinates in two columns titled “latitude” and “longitude”.
Convert SHP to KML
Convert your shapefile to kml by dragging and dropping a zipped file containing .dbf, .sbn, .sbx, .shp, and .shx, etc. We support all native projections.
Convert GPX to KML
Drag and drop your GPX file from your GPS device or mapping programme.
Convert KMZ to KML
Convert your kmz to kml file by dragging and dropping it into the space below.
Convert DXF to KML
Convert your dxf to kml by dragging and dropping or by selecting from your file directory.
Coordinates Converter Instructions
The converters are extremely easy to use. Simply prepare a spreadsheet or CSV containing the geocoding information you would like to convert in a column titled appropriately and drag and drop it into the converter. Check the instructions below depending on the type of geocoding information your want to convert into decimal latitude and longitude. Each type also provides an example of a convertible data set using that type of geocoding to download.
To convert ZIP codes to latitude and longitude, simply use one column titled “ZIP” and use the the full 5-digit ZIP code, without the state abbreviation, e.g. 20500.
A sample data set using UTM coordinates is available for download by clicking here. This sample lists the position of the 50 highest peaks in California, based on data from a mountaineering website (source).
If your data does not include US cities, use two columns titled “City” and “Country” and provide both the city name in the form listed in our database and the country name or code, as described in the container above. Add a third “US State” column if the data includes US cities, filling it as explained in the container below, and leaving it blank for the non-US cities in the data.
• Degrees, Minutes, Seconds should be presented as 25°11’49.66″ and 55°16’27.52″
• Degrees, Decimal Minutes should be presented as 25° 11.828′ and 55° 16.459′
• Note that there is no need to use N, S, E or W. If a point occurs South of the equator or in West of Greenwich, i.e. S or W, then please use the minus “-” symbol. If the latitude and longitude for your data use N, S, E and W instead, click here to find out how to convert it.
A sample data set using latitude and longitude is available for download by clicking here.
Simply title the column appropriately, with “Country”, “ISO2 Code” or “ISO3 Code” and use either the names, 2-letter codes, or 3-letter codes. For example: Argentina, AR or ARG.
A sample listing two and three-letter ISO codes as well as the different names recognized by the system is available for download by clicking here.
To convert BNG coordinates (British National Grid — formerly known as the National Grid Reference or NGR), use two columns titled “Easting” and “Northing”.
KML Converter Instructions
Our KML converter is extremely easy to use.