FPVBuilder is a free online FPV drone builder and part picker. Configure your drone part by part with electrical, mechanical and class-coherence checks. No signup. No paywall.
Start building Browse popular buildsThree personas: (1) beginners who never built a drone and need someone to validate parts are compatible; (2) intermediate pilots upgrading components without messing up stack mount or connector; (3) FPV stores who want to see how the community is building with their catalog. Works for all.
Frame, motors, ESC (or integrated ESC+FC stack), FC, VTX, camera, receiver (ELRS/Crossfire/TBS), battery, propellers, RX antenna and VTX antenna. Each part has technical specs (KV, stator size, voltage, mount pattern, etc.) cross-checked against the rest of the build.
Not a static catalog. Every change in the build triggers validation with 50+ rules: R0 (FC required), R1-R4 (mount patterns), R5-R10 (electrical), R12-R15 (camera/VTX), R21 (class coherence), R49-R58 (advanced: BEC, wire gauge, AUW vs EU class). All documented here.
It also works as an FPV part picker: choose each component and see which options are compatible with the rest of your build, the real price across stores and the weight of the whole drone. If you are still deciding between two options, read the data-based comparisons first.
10,978 parts indexed from multiple FPV stores, by category: