Bill of Material Generator
This Bill of Materials (BOM) generator helps you create and visualize a BOM tree, a hierarchical structure that lists all components, parts, and sub-assemblies required to manufacture a product.
A BOM tree diagram shows how individual parts combine into assemblies and final products. Engineers, manufacturers, and operations teams use BOM structures to plan production, estimate material requirements, manage procurement, and understand product dependencies.
Use the builder below to create your BOM structure, then generate a downloadable BOM diagram for documentation, manufacturing planning, or system design.
How to Use the Bill of Materials (BOM) Generator
This tool generates a Bill of Materials (BOM) tree diagram, a hierarchical representation of the components, parts, and sub-assemblies required to build a product. The diagram visualizes the product structure and shows how individual items combine into assemblies and final products.
A BOM tree is typically organized as a multi-level hierarchy. The root node represents the final product, while each child node represents a component or sub-assembly. Every node also contains a quantity value, indicating how many units of that component are required by its parent assembly.
This generator allows you to construct a multi-level BOM by defining components, assigning quantities, and nesting sub-assemblies. The resulting structure can be exported as a BOM diagram, which can be used for manufacturing documentation, engineering communication, production planning, and procurement analysis.
Once the BOM structure is created, the renderer converts the hierarchical data into a visual tree diagram that highlights parent-child relationships, component quantities, and assembly groupings.
Bill of Materials Diagram Example
The example below illustrates a typical BOM tree diagram. The root node represents the finished product, while the branches represent assemblies, sub-assemblies, and individual components required to manufacture it.
BOM Tree Example
