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Certificate of Conformance Template: Build & Export Free
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Overview
What is a Certificate of Conformance?
A Certificate of Conformance (also called a Certificate of Conformity, CoC or C of C) is a document in which the supplier formally states that the items in a specific shipment conform to identified requirements: a purchase order, a drawing, a specification, an industry standard, or contract terms.
It is a declaration, not a test report. A CoC asserts conformance and points to the requirements and evidence behind it; it does not, by itself, list measured results. That is what sets it apart from a Certificate of Analysis, which reports the actual measured values for a batch (more on that below).
CoCs are routine in aerospace, defense, automotive, electronics, medical and general manufacturing supply chains. A good one is tied to one shipment, references exact revisions, carries lot or serial traceability, and is signed by someone authorized to make the statement on the supplier's behalf.
The fields
What to include in a Certificate of Conformance
A CoC that passes receiving inspection is specific and traceable. These are the fields reviewers look for, and every one of them is in the template.
Supplier name and address
The legal entity making the statement, with the address of the facility that produced or supplied the goods.
Customer name and address
Who the certificate is issued to: the buying organization and ship-to, so the CoC is unambiguously tied to one relationship.
Certificate number and date
A unique certificate identifier and issue date. This is how the CoC is referenced, filed and audited later; never reuse a number.
Purchase order (PO) number
The customer PO the shipment fulfills, linking the certificate to the order and its agreed requirements.
Part name, number and revision
The exact part or product identity, including drawing or part-number revision, because conformance is always to a specific revision.
Quantity and lot / batch / serial
How many units are covered, plus the lot, batch or serial numbers that make the certificate traceable to physical goods.
Specifications, drawings and standards
The requirements the goods conform to: drawing numbers, specification IDs and any industry or customer standards, each with its revision.
Statement of conformance
The explicit sentence certifying that the identified goods conform to the identified requirements. Specific beats boilerplate.
Deviations or waivers
Any approved concessions, deviations or waivers that apply, or a clear statement that there are none. Silence here is a red flag to auditors.
Authorized signatory
Name, title, signature and date of the person authorized to certify on the supplier's behalf. Without this, a CoC carries no weight.
Step by step
How to fill out a Certificate of Conformance
Four passes get you from a blank template to a signed, shippable certificate.
Identify the parties and the order
Enter supplier and customer details, the PO number, and a fresh certificate number and date. This is the paperwork that files and audits the document later, so make the certificate number unique and easy to trace.
Describe exactly what shipped
Add the part name, number and revision, the quantity, and the lot, batch or serial numbers. A reviewer should be able to match this line to the physical goods in front of them without guessing.
State what it conforms to
List the drawings, specifications and standards, each with its revision, and write the conformance statement against them. Note any deviations or waivers, or state plainly that there are none.
Sign and authorize
Have the authorized signatory add their name, title and date. Apply your brand kit so it goes out looking like your company, then export the PDF and send it with the shipment.
Which one
Certificate of Conformance vs. Certificate of Analysis
These two get confused constantly, and shipping the wrong one holds up receiving. The difference is simple: one asserts conformance, the other shows the numbers.
Certificate of Conformance
A declaration. The supplier states that the goods conform to the identified requirements and references the drawings, specs and standards behind that statement.
Use when the customer wants signed assurance that the parts meet the drawing.
Certificate of Analysis
A data record. It reports the actual measured values for a batch (test characteristics, methods and results) against their specification limits.
Use when the customer wants the numbers: dimensions, chemistry, potency for a lot.
See the Certificate of Analysis template →Get it right
Common mistakes to avoid
- Reusing certificate numbers or leaving the number and date blank, which breaks traceability and filing.
- A vague conformance statement like “meets all requirements” with no drawing, spec or standard cited.
- Missing lot, batch or serial numbers, so the certificate can't be tied to the physical goods.
- Referencing an obsolete drawing or specification revision instead of the one the parts were made to.
- Leaving deviations or concessions off the certificate when they actually apply.
- An unsigned CoC, or one signed by someone without the authority to certify on the supplier's behalf.
Questions
Frequently asked
Is a Certificate of Conformance a legal document?
A CoC is a formal, signed supplier statement and is often a contractual requirement, so it carries real weight: a false certification can have contractual and legal consequences. Whether it is legally binding depends on your contract and jurisdiction; this template is a starting point, not legal advice.
What's the difference between a Certificate of Conformance and a Certificate of Analysis?
A Certificate of Conformance declares that goods conform to identified requirements and references the specs behind that statement. A Certificate of Analysis reports the actual measured test results for a batch against their limits. A CoC asserts conformance; a CoA shows the numbers.
Who signs a Certificate of Conformance?
Someone authorized to certify on the supplier's behalf, typically quality assurance, the quality manager, or another delegated authority. The signatory's name, title and date belong on the certificate; an unsigned CoC generally isn't accepted.
Do I need a Certificate of Conformance for every shipment?
It depends on the customer, the part and the contract. Controlled, safety-critical or regulated parts usually require a CoC with every shipment or lot; commodity items often don't. Your purchase order or quality agreement will state what's required.
Is a Certificate of Conformance the same as a Declaration of Conformity?
They're related but not identical. A Certificate of Conformance is usually a supplier-to-customer statement that a specific shipment meets its purchase-order and drawing requirements. A Declaration of Conformity is typically a manufacturer's declaration that a product meets specified regulations or standards (for example, CE marking under EU directives).
Related templates
Read the guideCertificate of Conformance (CoC): what it is and how to write one
A Certificate of Conformance is a supplier’s signed statement that what shipped meets the agreed requirements. Here’s what a CoC must state, when it’s required, and a reusable structure you can standardize.
Read the guide →Documents that go with a Certificate of Conformance
Certificate of Analysis (CoA)
Reports batch- or lot-specific test characteristics, specifications, methods and actual results for a product or material.
Open template →Declaration of Conformity
Provides a formal manufacturer or responsible-party declaration that an identified product conforms to specified legislation, standards or requirements.
Open template →Inspection Report
Records inspection characteristics, requirements, measurements, methods, evidence and acceptance results for a part, lot or product.
Open template →Build your Certificate of Conformance now
Fill in the fields, apply your brand, and export a clean PDF. Free to start.
Note: This template gives you a structured starting point that reflects the format a Certificate of Conformance is expected to take. It does not certify compliance and is not legal advice. You remain responsible for the accuracy of the certificate, for confirming that the drawings, specifications and standards you reference are current, and for meeting your customer's and contract's requirements before you release it.