A Lithuanian IBAN is always 20 characters long. Here is what each part of it means, with a real example broken down field by field — and a checker that runs on your machine.
Lithuania's 20-character IBAN is fully numeric: five digits for the bank, eleven for the account. Many fintech accounts across Europe are issued on Lithuanian licences, so LT IBANs turn up far more often than the country's size would suggest.
The two digits straight after LT are not part of the account — they are a checksum over everything else. Move the first four characters to the end, turn every letter into a number (A=10 … Z=35), divide the result by 97, and a genuine IBAN always leaves a remainder of exactly 1. That is what the box above is doing, on your machine, with nothing sent anywhere.
If the number is on a scanned PDF you cannot select, retyping 20 characters is where mistakes get made. Snip2Field sits on your Windows desktop: press a hotkey, drag a box over the IBAN, and it reads the field, runs this exact checksum and copies it — ready to paste into your books or a transfer form. Fully offline.
See Snip2FieldExactly 20, always. That is LT, two check digits, and 16 characters of account detail. Anything longer or shorter is not a valid LT IBAN, whatever else is right about it.
It is the 5 characters directly after the check digits. In the example LT12 1000 0111 0100 1000, that is 10000.
You can tell whether it was written down correctly: the check digits catch a single wrong character or two swapped ones. You cannot tell whether the account exists — only the receiving bank knows that, which is what the recipient-name check does when a transfer is made.