What Is an IMEI Number?

An IMEI (International Mobile Equipment Identity) number is a unique 15-digit code assigned to every mobile device. It acts as the phone’s digital fingerprint — helping identify the device on mobile networks, track lost or stolen phones, block fraudulent devices, and verify authenticity.
Since no two phones share the same IMEI, it is one of the most reliable identifiers in the mobile industry.

IMEI Checker & Calculator

Validate a 15-digit IMEI (Luhn check) or compute the check digit for a 14-digit IMEI base. Simple, offline, single file.

IMEI Checker

Enter 15-digit IMEI

Only digits accepted. You may paste the full 15-digit IMEI.

IMEI Calculator

Enter 14-digit IMEI base

Enter 14 digits (no check digit). Tool will compute the 15th digit.

How to Use the IMEI Checker

The IMEI Checker allows you to instantly verify whether a 15-digit IMEI number is structurally valid using the Luhn checksum algorithm.

Steps to use the checker:

Find your phone’s IMEI by dialing *#06# or checking Settings → About Phone.
Enter the 15-digit IMEI number in the input box.
Click “Check IMEI”.
The tool will display whether the IMEI is Valid or Invalid, along with calculation details.

This verification ensures your IMEI follows the correct global standard format.

How to Use the IMEI Calculator

The IMEI Calculator helps you generate a valid 15-digit IMEI by computing the correct Luhn check digit.

Steps to use the calculator:

Enter the first 14 digits of the IMEI (TAC + Serial Number).
Click “Calculate Check Digit”.
The final IMEI number, including the correct 15th digit, will appear instantly.
Use the Copy IMEI button to quickly copy the generated IMEI.

This tool is useful for developers, testers, or anyone needing to generate valid IMEI samples for technical use.