SURVEYING · MAPPING · GEODESY
Field calculations and conversions, right in your browser.
Convert coordinates, adjust traverses and exchange files between CAD and GIS. The work runs on your computer: your files are never uploaded to a server.
- lat / lon
- -27.600000 / -48.560000
- E / N (UTM 22S)
- 740828.836 m / 6944729.690 m
- convergence
- -1°07'51.6"
Example from the UTM ↔ Geographic tool (SIRGAS 2000).
Six tools, free and with no sign-up
UTM ↔ GeographicConvert E/N to latitude/longitude and back, with zone, convergence and scale factor.DXF → KML / KMZTake a CAD drawing to Google Earth, with the datum and zone you declare.SAD 69 → SIRGAS 2000Change datum with the official IBGE grids and see the shift in meters.TraverseClosed, connecting or open, with angular and linear adjustment and a calculation report.SHP · KML · DXF · GeoJSON converterConvert files between CAD and GIS, reprojecting when needed.CSV / TXT → DXFTurn the survey coordinate list into a drawing, with labels and area.
Every result has a reference
Checked against PROJThe UTM projection is compared with points computed by PROJ, within 0.1 mm. Datum changes use the same IBGE files and are also compared with PROJ.
Traverse per NBR 13133Tolerances, PP and PS classes and error distribution follow the standard. The calculation is the same as a network-adjustment program tested with real data.
Real privacyFiles are read and converted in your browser. Nothing is uploaded, stored or analysed on the server.