bng2latlong

getthedata · Location

Location No Auth Free & Open location

Convert an OSGB36 easting and northing (British National Grid) to WGS84 latitude and longitude.

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Returns latitude and longitude for the given easting and northing.

Takes an OSGB36 easting and northing (British National Grid) and returns the geographically equivalent WGS84 latitude and longitude. #### A successful request returns the following fields: * status - this will be `ok` * easting - the easting provided in the request * northing - the northing provided

https://api.apis.guru/v2/specs/getthedata.com/bng2latlong/1.0/bng2latlong/{easting}/{northing}

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/getthedata.com/bng2latlong/1.0/bng2latlong/{easting}/{northing}"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/getthedata.com/bng2latlong/1.0/bng2latlong/{easting}/{northing}",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/getthedata.com/bng2latlong/1.0/bng2latlong/{easting}/{northing}';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://api.apis.guru/v2/specs/getthedata.com/bng2latlong/1.0/bng2latlong/{easting}/{northing}"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/getthedata.com/bng2latlong/1.0/bng2latlong/{easting}/{northing}")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/getthedata.com/bng2latlong/1.0/bng2latlong/{easting}/{northing}";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

See official documentation for authentication and setup.

What can you build with bng2latlong?

bng2latlong is a Location API. Developers commonly use location APIs for:

tracking assets and vehicles in real time
building delivery and logistics apps
finding nearby businesses or services
geo-fencing and location-based notifications
address validation and autocomplete

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. bng2latlong is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗