GPS location
One tap fills in latitude, longitude, the OS grid reference and the accuracy of the fix. Or walk a boundary and add a point at every corner.
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In SiteSurvey, set a text question's format to GPS location, or title it with grid reference, coordinates or GPS. On site, tap Mark current location under the question. It fills in latitude and longitude, the OS grid reference for positions in Great Britain, and the accuracy, keeping any note typed in front. For a boundary or route, use GPS points: each tap adds a point, with Remove last point and a View on map link.
Last updated 20 October 2026.
Where it was, not just what it was
Most site forms ask for a location and get a description: by the gate, north corner, behind the shed. That's fine until someone else has to find it. SiteSurvey adds a Mark current location button to the question, so every tree, defect, asset or sample point carries a position anyone can open on a map, with an OS grid reference for sites in Great Britain.
Capability 01
One tap writes the latitude and longitude, the OS grid reference for positions in Great Britain, and the accuracy, for example 51.501780, -0.140620 (TQ 29154 79732, ±6 m). View on map opens it straight away.
Capability 02
Set a question to GPS points and each tap adds the current position: walk a site boundary, the corners of a plot or a cable route. Remove last point fixes a mistake, and the map link shows them all.
Capability 03
Questions titled grid reference, coordinates or GPS get the button without editing. In the form builder, the Format picker has GPS location and GPS points (boundary or route) for any other text question.
Capability 04
Every mark records its accuracy. A fix weaker than ±50 m is flagged with a prompt to mark again outdoors, and if location is switched off the field says how to allow it and can still be typed in.
On the form
Here it is on a tree condition survey, on SiteSurvey web forms, in any phone, tablet or desktop browser: one tree marked where it stands, then the site boundary walked corner by corner.
Step 01
Location or grid reference gets the button automatically. Car park is typed in first.
Step 02
The note stays, followed by the coordinates, the OS grid reference and the accuracy.
Step 03
A GPS points question starts the same way. Stand at the first corner and tap.
Step 04
Add another point here at each corner. Remove last point fixes a mistake.
Office and field, connected
The position is saved as plain text in the answer, so it reads the same in the form, the export and the report, and anyone can paste it into a map. For sites in Great Britain the OS grid reference sits beside the coordinates, ready for planning applications, tree preservation records and the people who still work from Ordnance Survey maps.
✓Coordinates, OS grid reference and accuracy in one answer
✓Plain text: reads the same in forms, exports and reports
✓View on map opens the point, or every point of a boundary
More smart fields
Tap a reference of known size, then the thing you're measuring. The height or width fills in, with the marked-up photo kept as evidence.
See how it works →Risk scores, totals, counts and days between dates, worked out from the answers as the form is filled in.
See how it works →Give the question the GPS location format in the form builder, or title it with grid reference, coordinates or GPS. On site, tap Mark current location under the question. SiteSurvey fills in the latitude and longitude, the OS grid reference for positions in Great Britain, and the accuracy of the fix, for example 51.501780, -0.140620 (TQ 29154 79732, ±6 m).
Yes, for positions in Great Britain. The grid reference is worked out from the GPS position on the device and added after the coordinates as a two-letter square and a 10-figure reference, such as TQ 29154 79732. Outside Great Britain you get latitude, longitude and accuracy.
Yes. Choose GPS points (boundary or route) as the question's format. Each tap of Add another point here adds the current position, so you can walk a boundary and mark each corner, or follow a route. Remove last point takes off a mistake, and the link under the field shows how many points there are and opens them on a map.
Yes. Type a note such as Car park or By the playground gate first, then tap Mark current location. The note is kept and the position is added after it. Tap Mark again later and only the position is replaced.
Text questions whose title or name mentions a grid reference, coordinates, GPS, or latitude and longitude, such as Location or grid reference on the tree condition survey. Existing forms pick it up without any editing. In the form builder, the Format picker has GPS location and GPS points (boundary or route) for any other text question.
SiteSurvey records the accuracy with every mark. If the fix is weaker than ±50 m it says so and suggests marking again outdoors. If location is switched off for the page, it explains how to allow it, and you can type the position instead.
GPS location works on SiteSurvey web forms today, which open in any phone or tablet browser, including forms shared by link. The phone app version, which also works with no signal, is on its way.
It is ordinary text, so it reads the same everywhere: in the form, in exports and in the report. A single point reads like Car park · 51.501780, -0.140620 (TQ 29154 79732, ±6 m). A boundary is a list of latitude and longitude pairs separated by semicolons.
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