Objective: The aim of this study is to develop an addon to Blender software, an accurate virtual planning protocol in rhinoplasty through three-dimensional (3D) technology and virtual tools using free software. Methods: An addon to software Blender was developed with use a conventional photographic documentation to obtain a photogrammetry of patient. A virtual planning protocol was stablished to predict a rhinoplasty result, with the use measurements direct on the virtual mesh. After the

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... , a virtual guide was building with the possibilities to 3D printing to use in the surgery. Results: Strong correlation between virtual planning with RhinOnBlender and the surgery results were observed. The 3D printing guide was usefull to orientate the surgeon during rhinoplasty surgery. Conclusions: Protocol using 3D technology and virtual tools with an addon RhinOnBlender to a free software enabled precise planning to rhinoplasty surgery.