IMEI Validator
Check a 15 digit IMEI with the Luhn check digit, compute the missing check digit for a 14 digit IMEI, or validate a whole list at once. The last digit of an IMEI is a check digit — if the Luhn sum fails, the number has a typing error.
Per-digit Luhn breakdown
| Position | Digit | Operation | Value used | Running total |
|---|
Starting from the rightmost digit, every second digit is doubled (9 is subtracted if the doubled value is above 9). The IMEI is valid when the total is a multiple of 10.
| # | IMEI | Status |
|---|
How to use
- Validate one IMEI: type the 15 digit number and press Validate IMEI to see the Luhn breakdown table.
- Compute check digit: type the first 14 digits to get the correct 15th digit.
- Batch mode: paste many IMEIs, one per line, and validate them all in one click.
Important notes
- This tool only checks the number structure. It cannot tell you if a phone is stolen, lost, or blacklisted — ask your mobile network operator for that.
- A failed Luhn check almost always means a typing error: retype the number carefully.
- IMEIs are printed on the phone box, under the battery or battery cover, or shown by dialing *#06# on the phone.