Download KiCad — PCB Design and Schematic Capture for Windows PC v10.0.7 for Windows PC

KiCad is free, open-source electronics design software for Windows, covering schematic capture, PCB layout, design-rule checks, SPICE simulation and a 3D...

Features

• Schematic capture, PCB layout, ERC and DRC checks, simulation and manufacturing outputs are integrated, so a board can be completed in one application.
• The included symbol, footprint and 3D-model libraries are extensive, reducing the time spent hunting for or drawing common components from scratch.
• The 3D board viewer helps catch connector orientation, clearance and mechanical fit problems before expensive prototype boards are ordered.
• Integrated SPICE simulation lets you test circuit behaviour during design instead of discovering every analogue problem on physical hardware.
• There are no paid-tier board size or layer limits, so the same tool can grow from simple maker boards to professional projects without changing tools, formats or workflow.

Considerations

• The Windows download is about 969 MB with libraries and 3D models, which is heavy on slow connections and small drives.
• PCB layout has a substantial learning curve, and KiCad cannot compensate for weak electronics, footprint or manufacturing knowledge.
• Managing custom symbols and footprints takes discipline, because a library mistake can become a wrong physical board after fabrication.

KiCad covers the full electronics design workflow in one suite, starting with schematic capture. You place symbols from its extensive built-in libraries, wire the circuit, and run ERC - electrical rules checking - to catch unconnected pins and conflicting outputs while the design is still a diagram. Every symbol then needs a footprint, the physical pad pattern for the real component, assigned through the symbol properties or the footprint assignment tool. That link between logical symbol and physical footprint is where careful designers slow down, because a correct-looking symbol with the wrong footprint produces a board that cannot work.

With footprints assigned, the design moves to PCB layout: components are placed, tracks routed between them, and net classes and board constraints set to match what your fabricator can actually manufacture. DRC - design rules checking - then compares the layout against those clearances and flags tracks, pads or vias that are too close. An integrated SPICE simulator can test parts of a circuit, such as filters or power supplies, where components carry simulation models.

Before ordering, the 3D viewer renders the assembled board with its 3D models, catching connector orientation and enclosure clearance mistakes a flat layout hides, and STEP export supports mechanical fit checks. Fabrication output is Gerber files plus drill files, zipped for the manufacturer. KiCad is GPL open source with no paid-tier board size or layer limits.

KiCad is for electronics hobbyists, makers and professional engineers who design printed circuit boards - from a first two-layer maker board to commercial products. It suits anyone who needs the complete path in one application: schematic, footprint assignment, layout, ERC and DRC checking, a 3D preview and fabrication files a manufacturer will accept. Because there are no board-size or layer limits tied to a paid tier, the same tool and file formats grow with the designer instead of forcing a tool change when projects get serious.

It also suits users who value ownership of their work. KiCad is GPL open source, historically sponsored by CERN and now run by the KiCad project and KiCad Services Corp, so designs are not held hostage by a subscription or a vendor's pricing change.

It is not for people without electronics knowledge, and it cannot supply that knowledge. KiCad will faithfully lay out a bad circuit, and understanding footprints, clearances, net classes and manufacturer capabilities matters more than learning where the buttons are. Library discipline matters too: a mistake in a custom symbol or footprint becomes a wrong physical board after fabrication, not just a wrong drawing. Beginners should expect a substantial learning curve, and anyone wanting a quick drag-and-drop circuit toy - or a tool that designs the electronics for them - is looking in the wrong place. The roughly 969 MB Windows download, with libraries and 3D models, is also worth knowing about on slow connections.

An engineer is finishing a small sensor board for fabrication. She opens the project in KiCad 10.0.7 and starts in the schematic editor, running ERC first: it flags one unconnected power pin, which she fixes in the schematic rather than discovering it on a dead prototype. She then checks footprint assignments against the component datasheets one final time, confirming pin numbering on the sensor itself, because that mismatch is the classic silent killer.

In the PCB editor she sets the board constraints to her fabricator's published minimum clearances before judging any errors, then runs DRC. It flags two tracks passing too close to a mounting hole; she reroutes them and re-runs until DRC is clean. In the 3D viewer she rotates the assembled board and spots that a connector's rendered orientation would collide with the enclosure wall - she moves it 3 mm, re-checks clearances, and runs DRC once more.

Finally she opens the fabrication outputs, exports the Gerber files for each copper, mask and silkscreen layer plus the drill files, previews the Gerbers, and zips them together with a bill of materials for the assembler. The concrete outcome: a checked, fabrication-ready board package sent for manufacture the same evening - with the errors caught while they were still free to fix, instead of after a batch of unusable boards arrived.

Download kicad-10.0.7-x86_64.exe for KiCad version 10.0.7 and allow time for the roughly 969 MB download, which includes the libraries and 3D models.

Launch kicad-10.0.7-x86_64.exe and keep the recommended components selected so the symbol libraries, footprints and 3D models install with the program.

Open KiCad, create a new project, and start in the schematic editor before moving to the PCB editor once footprints are assigned.

Run ERC on the schematic and DRC on the board, then inspect the result in the 3D viewer before exporting fabrication files.

Is KiCad — PCB Design and Schematic Capture for Windows PC free and open source?

Yes. KiCad — PCB Design and Schematic Capture for Windows PC is completely free and open-source software. You can download and use it at no cost, and its source code is publicly available.

What files do I send a manufacturer to get my KiCad board made?

Most fabricators want Gerber files for each copper, mask and silkscreen layer plus drill files, all exported from KiCad's fabrication outputs, usually zipped together. Many also accept a bill of materials and placement files if they are assembling the board. Always check the manufacturer's own requirements and preview the Gerbers before ordering.

Why am I getting DRC clearance errors on my KiCad board?

DRC compares your layout against the board's design rules and your manufacturer's minimum clearances. Errors usually mean tracks, pads or vias really are too close for those settings, or the board constraints were never set to match the fabricator. Fix the rule values first if they are wrong, then move the flagged geometry rather than ignoring the warnings.

How do I assign a footprint to a symbol in KiCad?

Every schematic symbol needs a footprint before layout, assigned either in the symbol properties, with the footprint assignment tool, or when the part is placed from a library that already links one. Double-check the footprint against the component datasheet pin numbering, because a correct-looking symbol with the wrong footprint makes a board that cannot work.

Can KiCad simulate my circuit before I build the board?

Yes, KiCad includes an integrated SPICE simulator for testing parts of a design, such as filters, power supplies and amplifier stages. Simulation needs components with SPICE models attached, which many library symbols do not carry by default, so expect to add models for specialised parts rather than simulating a whole complex board in one click.