Datum & Metadata Quick-Check
Paste the header or metadata lines from two or more project files — a control listing, a point-file banner, a plan title block — and compare the datum, MGA zone, geoid model and epoch each one declares. Disagreements are highlighted for review; a header that states nothing is reported as not stated, never guessed.
Free advisory field tool — every result is computed in your browser from the inputs you provide and is advisory and unverified, not for survey deliverables. Where a published guideline applies, results only ever read “within guideline” or “exceeds guideline — review”. The full working is shown for every calculation so each step can be re-checked. Registered surveyor confirmation required before reliance.
Pasted text stays in this browser tab — nothing is uploaded.
Paste header text from at least two files to compare what each one declares.
This quick-check reads only the header text you paste — it never sees the files themselves, and what a header declares can differ from what the data actually is. The table flags disagreements between declarations for you to chase at the source; it makes no statement about which value is right. A project-wide, cross-file consistency check over uploaded working data is planned for the product — this page stays the quick manual version.
Advisory output — confirm independently before reliance.
Safety & scope
SurveyMarkup does not certify survey accuracy, cadastral compliance, legal boundaries, or coordinate correctness. It helps prepare and review working information, but original data and final outputs must be checked by a qualified user before use.
Assistance only - professional review remains required.