CAD-grade fillet for QGIS — true tangent arcs with live radius preview and automatic trimming. Part of the PlanX suite.
Rounding a corner between two line segments in plain QGIS means manual arc construction and tedious trimming. EasyFillet brings the drafting-grade fillet operation straight into QGIS vector editing: pick two segments, set a radius, and get a precise tangent arc with both source lines trimmed to meet it at a clean node.
- Interactive two-segment selection with live radius and chord-length preview.
- True tangent arcs — geometrically correct topology, not polyline approximations.
- Automatic trimming — source lines are cut to meet the arc at a perfect node.
- Numeric-radius dialog for precise, repeatable input.
- Right-click Extend mode — lengthen short segments before filleting.
- CRS-robust — works with any CRS and handles mixed-CRS layer pairs.
From the QGIS Plugin Hub (recommended): Plugins → Manage and Install Plugins… → search for "EasyFillet" → Install.
From a release zip: download the latest zip from Releases → Plugins → Install from ZIP.
Requires QGIS 3.0 or newer. No external Python dependencies.
- Open an editable line layer.
- Click the EasyFillet tool icon in the toolbar.
- Click the first segment, then the second.
- Enter the desired radius in the dialog and press OK.
- The tangent arc is drawn and both lines are trimmed automatically.
Full version history: CHANGELOG.md
This plugin is one of 15 open-source QGIS plugins for urban planning by the same author:
| Planning & analysis | CAD & production | 3D & visualization |
|---|---|---|
| PlanX — spatial-planning suite | PlanX CAD Toolset — drafting-grade CAD | PlanX 3D City — Three.js city viewer |
| GeoStats Lab — spatial statistics | EasyFillet — tangent-arc fillet | 3D OSM Model — OSM → 3D city in browser |
| Suitability Lab — raster MCDA | Settlement Toolset — 9-stage settlement plans | OSM Quick 3D — OSM → native QGIS 3D |
| DataCube Lab — spatiotemporal cubes | UIP Toolset — Turkish master-plan automation | Urban Procedural 3D — parametric zoning lab |
| Urban Resilience — 28 resilience tools | ParcelFlux — parcel subdivision | CartoLab — publication cartography |
GPL-3.0 © Yusuf Eminoğlu — bug reports and feature requests welcome in Issues.