Eight local coordinate, GeoJSON, GPX and measurement tools with interactive diagrams and explicit calculation limits.
Choose a workflow. Nothing is calculated or loaded automatically.
One actual standalone tool is active at a time. Reset, Close or switching releases coordinates, imports, diagrams and generated results. Filters leave the active analysis untouched. Export results before leaving; no sources, settings or working results transfer automatically.
Choose a geographic workflow above. Convert coordinates or inspect and measure local geometry entirely on your device.
Eight actual standalone workflows, including the existing shared Decimal/DMS converter. Viewers draw unprojected longitude/latitude diagrams without external basemaps. Measurements use a sphere with radius 6,371,008.8 m, not ellipsoidal, terrain, survey or live-routing results. GeoJSON validates a bounded structural profile; polygon area has a separate bounded topology check. GPX track segments stay separate. No automatic source or coordinate transfers.
All eight actual standalone interfaces run locally in one active isolated panel. There are no uploads, external map tiles or automatic geolocation requests.
No. Each active tool owns its source and results. Filters do not switch it, and changing workflows releases its data. Copy/download explicitly if you want to reuse it elsewhere.
The existing Decimal / DMS Coordinate Converter is shared with Conversion Tools at its original URL. It changes notation, not datum or projection.
