GISFORUS Field

GISFORUS Field puts a set of fast, no-nonsense GIS and remote-sensing tools in your pocket. It's built for spatial researchers, remote-sensing analysts, surveyors, GIS students and anyone who needs quick, reliable field calculations — clean, native, and calm to use.

Every tool runs entirely on your device. No account, no sign-in, no sending your inputs to a server.

FREE TOOLS

- Spectral Indices — Compute NDVI, GNDVI, NDWI, NDMI, NDBI, SAVI and EVI from surface-reflectance band values, with a land-cover interpretation and a colour ramp so you can read the result at a glance.

- Unit & GIS Conversions — Convert area and distance across metric, imperial and survey units, plus GIS-specific conversions you actually use in the field:

– Coordinates: Decimal Degrees ↔ Degrees/Minutes/Seconds (DD ⇄ DMS)

– Map scale to ground distance (e.g. 5 cm on a 1:50,000 map)

– Pixel extent to ground area (e.g. a 500×500 window at 10 m/px → hectares)

- UTM Zone Finder — Resolve the UTM zone, EPSG code, latitude band, MGRS grid zone and central meridian from any latitude/longitude. Paste coordinates straight from Google Maps or QGIS and it reads them automatically, or enter them by hand with simple N/S and E/W toggles — no guessing about minus signs.

Every input is labelled clearly, shows a real-world example, and explains exactly what's expected — so you spend time on the work, not on figuring out the fields.

GISFORUS PRO (one-time upgrade)

Unlock the Advanced Analyzers with a single lifetime purchase — no subscription:

- Cloud Scorer — rank scenes by cloud and shadow contamination

- Seasonality Planner — plan acquisition windows by phenology

- Multi-Index Synergy — combine indices into weighted composite scores

- Threshold Matrix — cross-tabulate index thresholds into classification masks

Pro also removes ads.

DESIGN

GISFORUS Field is designed to feel like a well-made scientific instrument — an academic, precise, understated interface with monospaced values and generous spacing, so numbers and coordinates are always easy to read.

Feedback and support: [email protected]

Learn more: https://gisforus.com