Find British National Grid Reference From Map

Tool to find the British national grid reference from a map.

Options and Output

Output NGR for Ireland?

Instructions

Click on the map anywhere in Britain (Scotland, England and Wales). You will then see the Northings, Eastings and National Grid Reference (NGR) below the map. If you wish to find the NGR from Ireland, make sure to tick on the option "Output NGR for Ireland?".

References

How to convert latitude and longitude to a British National Grid Reference.

Google Maps API

Version History

Previous Comments For This Page

Great Meme
By Memealon 9001 on 13/08/2015

Wowowow
By MaculinCukin on 11/08/2015

5 minutes of this is enough, its useless, worst online map ever
On 01/05/2015

I believe the output from this tool is in the WGS84 co-ordinate system. If you wish to compare this to an Ordnance Survey Map you will need to convert the output to the OSGB36 co-ordinate system. In short the output is accurate, but when comparing to other maps make sure you are using the same co-ordinate system.
On 21/04/2015

Easy to use and seems accurate
By Terry Smith on 18/03/2015

Complete and utter waste of time, the Easting/Northing references are MILES out.
On 02/02/2015

I think the calculations are not correct. I have compared the output from your map with 2 independent maps. Memory Map with OS-Maps from 2014 and UK maps with OS Maps (a free tool for iPad). The oucome is not huge, but at least a few 100 yards. However I think this is a brilliant tool and very good made. Just a slight calculation error in the NGR values ;-)
By Axel on 21/01/2015

This is pathetic
By Hwdchu on 04/11/2014

with reference to the map,is the movements voluntary of forced?substantiate your argument by mentioning three factors from the map and other factors to support the type of migration you mentioned.
By Reginald shuping on 18/08/2014

No. Detail to maps. NGR are not accurate only approx
By Alun on 02/08/2014

Accurate to 100m is fine for me! Great free tool if you don't need a pro level accuracy - and if you need pro accuracy, you should be prepared to pay.
By Grateful, England on 28/07/2014

Its free and ok for my survey work.
On 12/07/2014

its not very good
On 03/04/2014

bad
By f on 19/01/2014

Many comments stated this is off, one stated by about 100m. If so, then this may be the error: the lat-lng values returned by Google Maps is WSG84-based. But the input to the cited formula should be lat-lng that is Airy1830-based. That conversion might be missing in this tool.
By dharasty on 24/10/2013

UK National Grid
By lulu on 22/07/2013

This is such an awesome map to use to locate and find things. I live in New Zealand , and its good to see another country has such detail on my countries features.
On 12/06/2013

Whenever I try to find the grid reference the blue thingymabob keeps going to Ukraine !!!!!!!! Helpfull but frustrating
On 16/02/2013

not bad at all , postcodes would be a good addition , zoom in on a point and get its postcode
By steve on 08/02/2013

As others have said this is inaccurate! Do not use it if you need a true grid reference. Use an OS Explorer map instead. A great shame.
By Edgar Iredale on 25/04/2012

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