Grid to lat/long

28 views
Skip to first unread message

Carlos

unread,
Apr 2, 2025, 12:31:39 AM4/2/25
to QGIS Australia User Group
Hi there,

Any online tool you know of in how to convert Grid number to coordinates?. 

Cheers

Emma Hain

unread,
Apr 2, 2025, 12:34:49 AM4/2/25
to australian-qg...@googlegroups.com
This should help!


Kind regards
Em

Emma Hain — Product Manager/Senior GIS Analyst
em...@north-road.com
https://north-road.com
 North Road
Cartography • Development • Spatial Analysis
north-road.com

QGIS User Conference 2025
2-3 June, Norrköping, Sweden
FOSS4G 2025
17-23 November, Auckland, New Zealand


--
You received this message because you are subscribed to the Google Groups "QGIS Australia User Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to australian-qgis-use...@googlegroups.com.
To view this discussion, visit https://groups.google.com/d/msgid/australian-qgis-user-group/95007c3a-6515-4c25-9c2e-8cabf08ff224n%40googlegroups.com.

Carlos Porras

unread,
Apr 2, 2025, 12:37:47 AM4/2/25
to australian-qg...@googlegroups.com
Thanks Emma,

But the only number I have is 37587928, so either I am dumb or I have not idea how to convert this grid number




I live on Gadigal land lll
I acknowledge the Traditional Custodians of Country throughout Australia and recognise their continuing connection to land, waters and community



Grant Boxer

unread,
Apr 2, 2025, 12:50:09 AM4/2/25
to australian-qg...@googlegroups.com

That’s a really weird number. What type of map is this from?

Cheers Grant

 

 

From: australian-qg...@googlegroups.com <australian-qg...@googlegroups.com> On Behalf Of Carlos Porras
Sent: Wednesday, 2 April 2025 12:37 PM
To: australian-qg...@googlegroups.com
Subject: Re: [QGIS-Australia-User-Group] Grid to lat/long

 

Thanks Emma,

 

But the only number I have is 37587928, so either I am dumb or I have not idea how to convert this grid number

 

 

 

I live on Gadigal land lll

I acknowledge the Traditional Custodians of Country throughout Australia and recognise their continuing connection to land, waters and community

 

 

On 2 Apr 2025, at 3:34 PM, Emma Hain <em...@north-road.com> wrote:

 

Kind regards

Em

 

Emma Hain — Product Manager/Senior GIS Analyst
em...@north-road.com

North Road
Cartography • Development • Spatial Analysis

north-road.com

QGIS User Conference 2025
2-3 June, Norrköping, Sweden
FOSS4G 2025
17-23 November, Auckland, New Zealand

 

On Wed, 2 Apr 2025 at 14:31, Carlos <car...@djinjama.com> wrote:

Hi there,

 

Any online tool you know of in how to convert Grid number to coordinates?. 

 

Cheers

 

--
You received this message because you are subscribed to the Google Groups "QGIS Australia User Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to australian-qgis-use...@googlegroups.com.
To view this discussion, visit https://groups.google.com/d/msgid/australian-qgis-user-group/95007c3a-6515-4c25-9c2e-8cabf08ff224n%40googlegroups.com.

 

--
You received this message because you are subscribed to the Google Groups "QGIS Australia User Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to australian-qgis-use...@googlegroups.com.
To view this discussion, visit https://groups.google.com/d/msgid/australian-qgis-user-group/CACGKw0Z4Q8tTM2WZakAb8XtebL4LtjZTAgfOHOpEL8s%3DEV6cog%40mail.gmail.com.

--
You received this message because you are subscribed to the Google Groups "QGIS Australia User Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to australian-qgis-use...@googlegroups.com.

Carlos Porras

unread,
Apr 2, 2025, 1:09:58 AM4/2/25
to australian-qg...@googlegroups.com
Agreed Grant 

Is from Wollongong (I believe) geological sheet. Data was collected in 1981 and the  only grid ref is that number, nothing else.





I live on Gadigal land lll
I acknowledge the Traditional Custodians of Country throughout Australia and recognise their continuing connection to land, waters and community


Grant Boxer

unread,
Apr 2, 2025, 1:30:53 AM4/2/25
to australian-qg...@googlegroups.com

Sounds like it might be something like 375800mE and 792800mN. Does that fit the area?

Carlos Porras

unread,
Apr 2, 2025, 2:13:55 AM4/2/25
to australian-qg...@googlegroups.com
No, it did not. Sent me to Antarctica.


All good, I may do it manually and see how I go. 

Thanks


I live on Gadigal land lll
I acknowledge the Traditional Custodians of Country throughout Australia and recognise their continuing connection to land, waters and community


box...@iinet.net.au

unread,
Apr 2, 2025, 3:17:35 AM4/2/25
to australian-qg...@googlegroups.com

Hi Carlos,

 

Did you set the project to the local UTM? AGD84 z55 or something like that? Check the projection of the map.

Michael Cushen

unread,
Apr 2, 2025, 3:30:35 AM4/2/25
to australian-qg...@googlegroups.com
Hi Carlos,

I use this from time to time:
https://epsg.io/transform#s_srs=3857&t_srs=4326&x=2443864.0000000&y=2372242.0000000

You can pick the Input and Output coordinate systems required.

Cheers,
Michael Cushen


--

Slade Beard

unread,
Apr 2, 2025, 3:30:40 AM4/2/25
to australian-qg...@googlegroups.com
Thats a wgs84 coordinate as used in construction 

From: boxerg via QGIS Australia User Group <australian-qg...@googlegroups.com>
Sent: Wednesday, April 2, 2025 6:17:22 PM
To: australian-qg...@googlegroups.com <australian-qg...@googlegroups.com>
Subject: RE: [QGIS-Australia-User-Group] Grid to lat/long
 

Slade Beard

unread,
Apr 2, 2025, 3:36:41 AM4/2/25
to australian-qg...@googlegroups.com
Sorry that was a bit short of information- it looks to me like an easting / northing in WGS 84

Ia...@jcis.net.au

unread,
Apr 2, 2025, 5:04:43 AM4/2/25
to australian-qg...@googlegroups.com

I am a bit puzzled about what map Carlos is looking at. I used DIGS to search for geological maps in NSW. I suspect it might be the Wollongong Port Hacking geological map !:100 000 – but this was only released in 1985 although I have come across a slightly earlier version c1981.

 

The base map is the standard national map 1:100,000 Transverse Mercator projection (ADG66 I am guessing) and Zone 56 and AHD 1966

 

Does this help? Once the map is established then we can try and work out its projection

 

Cheers

 

Dr Iain Stuart

JCIS Consultants

President Royal Australian Historical Society

P.O. Box 2397

Burwood North

NSW, 2134


(0413) 380116 (m)

 

From: australian-qg...@googlegroups.com <australian-qg...@googlegroups.com> On Behalf Of Michael Cushen
Sent: Wednesday, 2 April 2025 3:37 PM
To: australian-qg...@googlegroups.com
Subject: Re: [QGIS-Australia-User-Group] Grid to lat/long

 

Hi Carlos,

Carlos Porras

unread,
Apr 3, 2025, 7:02:10 PM4/3/25
to australian-qg...@googlegroups.com
Hi Ian,

Here is what I’ve got. I can’t share other details because confidentiality yada yada yada. 

That’s the only info in the sheet. As I said I am trying to locate where approximately is this place.



Screenshot 2025-04-03 at 4.29.23 PM.png




I live on Gadigal land lll
I acknowledge the Traditional Custodians of Country throughout Australia and recognise their continuing connection to land, waters and community


Juan Fernando Berrío

unread,
Apr 3, 2025, 7:35:11 PM4/3/25
to australian-qg...@googlegroups.com
Hello Carlos, hope this helps.


image.png



To view this discussion, visit https://groups.google.com/d/msgid/australian-qgis-user-group/4AFF7675-60A5-48C0-AF94-3DD9EA892362%40gmail.com.

WillyB

unread,
Apr 4, 2025, 6:56:35 AM4/4/25
to QGIS Australia User Group

carlos.png

Andy Tice

unread,
Apr 4, 2025, 6:45:49 PM4/4/25
to Unname
Hi Carlos,
Appreciate that you're operating under some level of confidence....but can you provide a little context?!
I live >10km from those coordinates....and I cannot turn up any DAs for the location...it's driving me crazy!

To view this discussion, visit https://groups.google.com/d/msgid/australian-qgis-user-group/26dddf04-3547-41f7-bcae-bcbff88574cbn%40googlegroups.com.

Ia...@jcis.net.au

unread,
Apr 5, 2025, 5:59:01 AM4/5/25
to australian-qg...@googlegroups.com

Carlos,

Good news the Wollongong 1:250,000 sheet is available from the State Library of NSW or the National Library for download. The NPWS did use the first edition 1:250000 not the second edition for their site cards.

 

The bad news is

 

1:250000 is a terrible scale for site locations

and

 

There were huge issues when the original grid references were reprojected into GDA95 with many sites being replotted out to sea. No sure whether this was a software problem or an archaeologist problem.

 

My practice has been to try and rely on the description of the sites location.

 

I used to be the Site Register in Victoria and worked in NSW for the last 20+ years  so I am familiar with the problem. At least you know where Currans Hill is.

 

Cheers

 

Dr Iain Stuart

JCIS Consultants

President Royal Australian Historical Society

P.O. Box 2397

Burwood North

NSW, 2134


(0413) 380116 (m)

 

From: australian-qg...@googlegroups.com <australian-qg...@googlegroups.com> On Behalf Of Juan Fernando Berrío
Sent: Friday, 4 April 2025 10:35 AM
To: australian-qg...@googlegroups.com
Subject: Re: [QGIS-Australia-User-Group] Grid to lat/long

 

Hello Carlos, hope this helps.

 

 

 

 

 

On Fri, 4 Apr 2025 at 09:02, Carlos Porras <carlospor...@gmail.com> wrote:

Hi Ian,

 

Here is what I’ve got. I can’t share other details because confidentiality yada yada yada. 

 

That’s the only info in the sheet. As I said I am trying to locate where approximately is this place.

 

 

 

image001.png
image002.png
Reply all
Reply to author
Forward
0 new messages