Address to Coordinates

Turn one address or a whole list into latitude and longitude, with the matched place name, and download the results as CSV.

Coordinates & GeocodingWorldwideSource: OpenStreetMap via the Photon geocoderFree, no sign-up

Addresses or place names — one per line

Up to 200 lines, looked up one at a time.

How to convert addresses to coordinates

Paste addresses. One per line: a street address, a city, a postcode or a landmark name.
Press Look up. Each line is geocoded in turn and the table fills in.
Check the matched place. The 'Matched place' column shows what each line was matched to, so you can catch a wrong town.
Look at the map. Every result is pinned; an outlier usually means an ambiguous address.
Download CSV. Export input, latitude, longitude and the matched place.

What address geocoding is used for

Mapping a customer or member list

Mapping tools need coordinates; this turns a column of addresses into them.

Planning delivery or sales routes

Route planners and distance calculators work from coordinates.

Entering a destination in a GPS or drone app

Some devices accept only latitude and longitude.

Preparing data for a GIS project

Turn an address table into points for QGIS or ArcGIS.

Event and wedding planning

Plot guest hotels and venues to see how far apart they are.

Comparing properties

Map a shortlist of houses with coordinates for each.

Remote or rural addresses

Give visitors precise coordinates where the address alone is hard to find.

Research and journalism

Geocode a list of incidents or facilities from a public report.

Checking an address exists

If nothing matches, the address may be misspelled or too new for the map.

Building a store locator

Get coordinates for each branch to load into a map.

How addresses are matched

Each line is sent to Photon, an open geocoder run by Komoot on OpenStreetMap data. Photon returns the best-matching mapped feature and its coordinates; the tool shows the coordinates and a label built from the feature's name, street, city, state and postcode, so you can see exactly what was matched.

OpenStreetMap coverage of house numbers varies: in many places a street address matches the building, elsewhere only the street or the town. When a query is just a place name, the page prefers a settlement over a point of interest with a similar name. Coordinates are WGS84 decimal degrees to six places, which is more precise than the match itself.

Lines are looked up one at a time with a short pause, so 200 addresses take a minute or two. Addresses go to Photon only; nothing is stored here.

Limits: an ambiguous line ('Springfield') matches one place among many — add the state or country. Results are approximate and must not be used where a surveyed location is required, such as property boundaries or emergency dispatch.

Sources

Photon geocoder
OpenStreetMap copyright and licence — ODbL
OpenStreetMap wiki: Addresses — how house numbers are mapped

Frequently asked questions

How accurate are the coordinates?

As accurate as the OpenStreetMap feature matched: a building where house numbers are mapped, otherwise the street or the centre of the town. The 'Matched place' column shows which.

Why did my address match the wrong town?

Many place names repeat. Add the state, county or country to the line, or a postcode.

What format are the coordinates in?

Decimal degrees on the WGS84 datum — the format used by GPS, Google Maps and most mapping software.

How many addresses can I convert?

Up to 200 per run. Paste longer lists in batches.

Can I geocode addresses outside the US?

Yes. Photon covers the whole world, with detail that depends on local OpenStreetMap mapping.

Are my addresses stored?

No. They are sent to Photon to be matched and are not kept by this site.