Convert CUSIP to ISIN

A CUSIP (Committee on Uniform Security Identification Procedures) is a unique identifier for North American financial securities.

This 9-character alphanumeric code is structured in three distinct parts:

• Six character issuer code, which identifies the company or entity that issued the security.
• Two characters that specify the exact issue number.
• A single check digit that helps verify the accuracy of the entire sequence.

For instance, Apple's common stock CUSIP is 037833100

When you enter a CUSIP on this page along with selecting a country, the system will calculate and show a theoretically valid ISIN.

A warning will be displayed if the CUSIP's checksum is not valid.

Please note that while any calculated ISIN will be technically valid according to the formatting rules, it may not correspond to an actual security trading in the market.

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