Convert Salesforce 15 to 18 Digit IDs in Excel with XL-Connector

Published: March 16, 2026

When working with Salesforce data, you’ll encounter two formats of record IDs: the older 15-digit, case-sensitive format and the newer 18-digit, case-insensitive format. Salesforce APIs and external integrations often rely on the 18-digit ID, while the 15-digit ID might appear in reports or older workflows. In XL-Connector, you can easily manage and convert these IDs to ensure consistency across your data operations.

Why the Difference Matters

The 15-digit ID is case-sensitive and was designed for internal Salesforce use. However, many external systems (such as Excel lookups, databases, or integrations) are case-insensitive. To address this, Salesforce introduced the 18-digit ID, which appends a checksum to ensure uniqueness regardless of case. When updating or querying data, using the 18-digit format is often necessary to avoid mismatches.

Converting IDs in XL-Connector

XL-Connector simplifies ID conversion:

  1. 1

    Identify any 15-digit IDs you need to convert.

  2. 2

    Use the built-in ID conversion function. In XL-Connector, you can select a column containing 15-digit IDs and choose the option to convert them to 18-digit format.

    Convert IDs
  3. 3

    XL-Connector will automatically append the correct three-character suffix that transforms each 15-digit ID into its corresponding 18-digit ID.

    Converted IDs

By using XL-Connector’s conversion feature, you ensure that your data handling is accurate and compatible with all systems, helping prevent errors and simplifying data management in Salesforce.

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