25 Free Bill of Materials (BOM) Templates in Excel (.xlsx) for Engineering, Architecture, and Manufacturing

If you’ve had to reconcile a CAD assembly with a broken spreadsheet five minutes before release, you know where most BOMs fail: structure, traceability, and units.

This set of 25 free Bill of Materials (BOM) templates in Excel (.xlsx) is built for actual workflows across engineering, BIM, architecture, and manufacturing. Each template is aligned with how data moves between CAD → BOM → ERP.

All templates are unlocked (no password), VBA-free (no macros), and structured for clean export to .csv for integration with systems like SAP, Oracle, or Odoo.

What Is a Bill of Materials (BOM)?

A Bill of Materials (BOM) is a structured dataset listing all components, materials, quantities, and references required to build a product. In a proper workflow, it also includes:

• Item Number (Find Number) → position in drawing/assembly
• Part Number → unique component identifier
• UOM (Unit of Measure) → EA, m, kg, lot
• Revision (Rev) → change tracking

Without these, the BOM breaks at procurement or during CAD reconciliation.

EBOM vs MBOM (Operational View)

Keep them separate. Trying to merge both is where most data integrity issues start.

Free Excel BOM Templates (.xlsx)

Engineering & Core Structures

Engineering Bill of Materials (EBOM) Template Best for: design engineers Use case: product definition from CAD Key fields: Item Number, part number, material spec, drawing reference, revision, UOM Focuses on the “as-designed” structure, organized by CAD part numbers, material specs, and drawing references.

Manufacturing Bill of Materials (MBOM) Template Best for: manufacturing engineers Use case: production planning Key fields: Item Number, routing, workstation, tooling, UOM, assembly sequence Focused on the “as-built” process, including assembly sequences, workstation routing, and specialized tooling requirements.

Multi-Level (Indented) BOM Template Best for: complex assemblies Use case: hierarchical breakdown Key fields: Item Number, parent-child structure, level, UOM A hierarchical spreadsheet that visualizes parent-child relationships for complex mechanical assemblies with multiple sub-assemblies.

Single-Level BOM Template Best for: simple builds Use case: quick procurement Key fields: Item Number, part number, quantity, UOM A flat list for simple assemblies or quick parts ordering where sub-assemblies do not require independent tracking.

Costing & Financial Control

Product Costing BOM Template Best for: cost engineers Use case: cost estimation Key fields: Item Number, unit cost, scrap factor, labor, UOM Integrates unit costs, scrap factors, and labor overhead to calculate the total COGS (Cost of Goods Sold) for a CAD project.

Architecture & Construction

Architectural Woodwork & Millwork BOM Best for: architects Use case: cabinetry Key fields: Item Number, sheet goods, finish, UOM Specialized for cabinetry and furniture design, tracking sheet goods, edge banding, and hardware finish codes.

Construction Material Take-Off (MTO) Template Best for: estimators Use case: quantity take-off Key fields: Item Number, volume, tonnage, UOM Used for civil and structural projects to quantify bulk materials like concrete volume, rebar tonnage, and aggregate.

FF&E (Furniture, Fixtures, and Equipment) BOM Best for: interior designers Use case: procurement Key fields: Item Number, finish, supplier, UOM For interior designers and architects to manage procurement of non-structural items with finish and fabric specs.

MEP Equipment Schedule BOM Template Best for: MEP engineers Use case: system tracking Key fields: Item Number, capacity, lead time, UOM Tracks HVAC units, pumps, and electrical panels with capacity ratings and procurement lead times.

Mechanical & Fabrication

Fastener & Standard Hardware BOM Best for: mechanical teams Use case: standard parts Key fields: Item Number, size, grade, UOM A dedicated sub-list for tracking high-volume standard parts like bolts, washers, and clips across multiple assemblies.

Structural Steel Cut List BOM Best for: fabrication Use case: cutting Key fields: Item Number, profile, length, material grade, UOM Focuses on beam profiles, exact cut lengths, and material grades for fabrication shop use.

Sheet Metal Fabrication BOM Best for: CNC fabrication Use case: production Key fields: Item Number, gauge, bend deduction, UOM Includes material gauge, bend deductions, and nesting efficiency data for laser or punch press operations.

Electronics & Process

PCB Assembly (PCBA) BOM Template Best for: electronics Use case: PCB build Key fields: Item Number, reference designator, MPN, UOM Tailored for electronics design, including reference designators (C1, R1), footprints, and Manufacturer Part Numbers (MPN).

Piping & Valve List (P&ID) BOM Best for: process engineers Use case: piping systems Key fields: Item Number, pipe schedule, pressure rating, UOM For process engineering, detailing pipe schedules, flange types, and pressure ratings directly from process diagrams.

Sustainability & Lifecycle

Sustainable Material & LEED BOM Best for: green projects Use case: compliance Key fields: Item Number, recycled content, VOC, UOM Includes columns for recycled content percentage, VOC levels, and regional sourcing data for green building compliance.

Spare Parts & Maintenance BOM Best for: maintenance Use case: service Key fields: Item Number, wear parts, stock level, UOM Designed for end-user manuals, highlighting wear items, recommended stock levels, and service intervals.

Supply Chain

Vendor-Managed Inventory (VMI) BOM Best for: procurement Use case: supplier sync Key fields: Item Number, MOQ, lead time, UOM A simplified format designed for sharing with suppliers, focusing on MOQ (Minimum Order Quantity) and lead times.

R&D and Configuration

Prototype R&D BOM Template Best for: R&D Use case: testing Key fields: Item Number, revision, status, UOM Tracks revision history, experimental components, and testing status during the early stages of product development.

Modular / Configurable BOM Template Best for: configurable products Use case: variants Key fields: Item Number, options, configuration rules, UOM Designed for products with multiple options (e.g., different motor sizes or finishes) using a selection logic.

Logistics

Packaging & Shipping BOM Template Best for: logistics Use case: shipping Key fields: Item Number, packaging type, UOM Lists boxes, protective inserts, labels, and pallets required to move the final product from the factory to the client.

Landscape & Electrical

Landscape Design & Hardscape BOM Best for: landscape Use case: site work Key fields: Item Number, plant type, volume, UOM Quantifies plant species (by size/age), soil volumes, and paving materials for civil and landscape projects.

Lighting Fixture & Control BOM Best for: electrical Use case: lighting Key fields: Item Number, luminaire type, control system, UOM Detailed list of luminaires, lamp types, and smart control requirements for electrical engineering sets.

High-Compliance & Tooling

Aerospace Certified BOM Template Best for: regulated industries Use case: traceability Key fields: Item Number, heat number, certification, UOM A high-integrity format including heat numbers, material certifications (CoC), and traceability data for regulated industries.

Tooling & Jig BOM Template Best for: internal manufacturing Use case: tooling Key fields: Item Number, components, tolerances, UOM Specifically for tracking components of internal factory equipment, molds, and inspection gauges.

Final Validation

As-Built (Final Reconciliation) BOM Best for: project closure Use case: final validation Key fields: Item Number, field changes, revision, UOM The final project list reflecting all field changes, substitutions, and “red-line” modifications made during production or construction.

Advanced BOM Concepts (Often Missing)

Phantom BOM (Logical Assemblies)

A Phantom BOM represents a sub-assembly that exists in CAD but not physically in production. Typical case: grouped fasteners or kits.

• Visible in EBOM
• Flattened in MBOM
• Prevents duplication and procurement errors

Non-Modeled Items (Critical for Costing)

Most CAD models miss:

• adhesives
• grease
• welding material
• labels

These must be added manually in the MBOM to avoid underestimating cost.

CAD-to-BOM Synchronization

If your BOM is not aligned with CAD properties, you’ll be fixing data manually.

• Match Excel columns with:
  • AutoCAD Attribute Tags
  • Revit Shared Parameters
• Use:
  • AutoCAD Data Extraction / Data Link
  • Power Query (Excel) for dynamic updates

Reference: https://www.autodesk.com/solutions/bim https://learn.microsoft.com/en-us/power-query/

Download Notes

• Excel format (.xlsx)
• Optimized for CSV export/import
• Compatible with ERP systems
• No macros, no lock

FAQ

What is included in a BOM template?

A BOM includes Item Number, Part Number, description, quantity, UOM, and revision. Advanced versions include cost and sourcing.

What is the difference between EBOM and MBOM?

EBOM = design structure. MBOM = manufacturing structure.

How do I create a BOM in Excel?

Define Item Number, Part Number, quantity, UOM, then expand with revision and supplier data.

What is a multi-level BOM?

A structured BOM showing parent-child hierarchy.

Are these templates free?

Yes. No lock, no macros.

Can I use these templates in manufacturing?

Yes. Several are aligned with real shop workflows.

How do I handle Revision Control within an Excel BOM?

Never overwrite data. Use:

• Rev column
• Separate Change Log tab Track who changed what and when.

Can I link these Excel BOMs directly to my CAD files?

Yes.

• AutoCAD → Data Link
• Revit / SolidWorks → Power Query / external links

This allows BOM updates when model properties change.

If you’re working under time pressure: start with Multi-Level BOM for structure or MBOM for production, then align it with your CAD properties before release.