IMEI Generator — Free Online IMEI Number Generator
Generate valid 15-digit IMEI numbers with proper Luhn checksums for software testing and development. Filter by device type and generate up to 50 numbers at once.
For testing only. These are randomly generated IMEI numbers for software testing and development purposes. Do not use them to impersonate real devices.
How to Use the IMEI Generator
- Choose a device type — select All Devices, iPhone, Android, or iPad to use realistic TAC prefixes for that device family.
- Set the quantity using the slider to generate anywhere from 1 to 50 IMEI numbers in a single batch.
- Click “Generate IMEI Numbers” to create valid 15-digit IMEI numbers with correct Luhn check digits.
- Copy individual IMEIs or use “Copy All” to grab the entire list for your testing workflow.
- Validate any IMEI by pasting it into the validator section below the generator to verify its Luhn checksum.
What Is an IMEI Number?
An IMEI (International Mobile Equipment Identity) is a unique 15-digit number assigned to every mobile device. It serves as a hardware fingerprint that identifies the device on cellular networks, independent of the SIM card or phone number. Carriers use IMEI numbers to track devices, enable or block network access, and identify stolen equipment.
The IMEI is structured into distinct segments. The first eight digits form the TAC (Type Allocation Code), which identifies the device manufacturer and model. The next six digits are the serial number assigned by the manufacturer. The final digit is a Luhn check digit used for error detection.
The Luhn algorithm (also called the mod-10 algorithm) works by doubling every second digit from right to left, subtracting 9 if the result exceeds 9, then summing all digits. The check digit is chosen so the total sum is divisible by 10. This catches common transcription errors like single-digit mistakes and adjacent transpositions, making it a standard integrity check in telecommunications and finance.
For developers, generated IMEI numbers are useful when building mobile device management (MDM) tools, testing device registration flows, seeding databases with realistic test data, or validating input forms that accept IMEI numbers. Our generator produces structurally valid IMEIs that pass Luhn validation but are not assigned to real devices.
Frequently Asked Questions
What is an IMEI number?
An IMEI (International Mobile Equipment Identity) is a unique 15-digit identifier assigned to every mobile phone and cellular device. It is used by carriers to identify devices on their networks and can be used to block stolen phones.
How is an IMEI generated?
An IMEI consists of a Type Allocation Code (TAC) identifying the device model, a serial number, and a Luhn check digit. Our generator uses known TAC prefixes for popular device families and appends random serial digits with a valid check digit computed using the Luhn algorithm.
Is it legal to generate IMEI numbers?
Generating IMEI numbers for testing and development purposes is generally acceptable. However, using a generated IMEI to impersonate a real device, commit fraud, or circumvent carrier blocks is illegal in most jurisdictions. Always use generated IMEIs responsibly and only for legitimate software testing.
What is the Luhn algorithm?
The Luhn algorithm is a checksum formula used to validate identification numbers such as IMEI numbers, credit card numbers, and national ID numbers. It works by doubling alternate digits, summing the results, and verifying the total is divisible by 10. It catches most single-digit errors and adjacent transpositions.
Can I use generated IMEIs for testing?
Yes. Generated IMEIs are perfect for testing device registration forms, building MDM tools, seeding test databases, and validating IMEI input fields. They pass Luhn validation but are not registered to real devices, making them safe for development workflows.