Bates Numbering Guide: How to Number Legal Exhibits & Discovery Documents

What is Bates Numbering?

Invented in the late 19th century by Edwin G. Bates, a Bates stamp was originally a handheld mechanical device that advanced a four- or six-digit sequence with every downward press.

In modern legal practice, Bates numbering (or Bates stamping) is the process of applying an indexed, sequential alphanumeric identifier to every page of every legal document exchanged between parties.

A standard Bates number consists of three parts:

• Prefix: Identifies the party or case (e.g., PLAINTIFF-, DEF-, EXHIBIT-A-).
• Zero-Padded Numeric Sequence: Fixed-width digits (e.g., 000001 to 004520). Padded zeros ensure alphabetical file sorting matches numerical page order.
• Optional Suffix: Denoting sub-files or confidential designations (e.g., -CONFIDENTIAL).

Why Standard Page Numbers Are Not Sufficient in Court

Standard page numbers (“Page 1 of 5”) reset with every single document. If you produce 30 separate 5-page contracts, you will have thirty different “Page 1s”.

During a high-stakes deposition or cross-examination in court, an attorney cannot say “Please look at Page 3 of the invoice.” The witness and judge will ask, “Which invoice?”

With Bates stamping, the attorney says: “Please turn to Bates Number PLAINTIFF-001248.” Every single page across millions of discovery records has a unique, unambiguous address.

How to Apply Bates Numbers Online (Free & Private)

You do not need an enterprise e-Discovery suite like Relativity or costly Adobe Acrobat legal licenses. Follow these steps on A2Z PDF Bates Numbering:

1. Open A2Z PDF Bates Numbering Tool.
2. Upload your multi-page discovery PDF or exhibit file.
3. Enter your prefix (e.g., DOC- or EXH-).
4. Set your starting number (e.g., 1) and number of padding digits (standard is 6 digits).
5. Choose page position: Bottom Right (standard), Bottom Center, Top Right, or Top Center.
6. Click “Apply Bates Numbers” to process and download your court-ready PDF.