IBAN

Matches an International Bank Account Number (IBAN) — 2-letter country code, 2 check digits, and up to 30 alphanumeric characters.

✓ International wire transfers✓ Bank account validation✓ Finance forms

Risk

Test String

3 matches

GB29NWBK60161331926819
DE89370400440532013000
PL61109010140000071219812874

[…]{2}Character class […]— Matches any single character listed in this set — repeated exactly 2 times · {2} — exactly 2 times

A-ZA-Z— A-Z — range from 'A' to 'Z'

\d{2}digit— \d — digit (0–9) — repeated exactly 2 times · {2} — exactly 2 times

[…]{4}Character class […]— Matches any single character listed in this set — repeated exactly 4 times · {4} — exactly 4 times

A-ZA-Z— A-Z — range from 'A' to 'Z'

0-90-9— 0-9 — range from '0' to '9'

\d{7}digit— \d — digit (0–9) — repeated exactly 7 times · {7} — exactly 7 times

(…){0,16}Group #1— Capturing group — captures matched text for reuse or extraction — repeated between 0 and 16 times · {0,16} — between 0 and 16 times

[…]?Character class […]— Matches any single character listed in this set — repeated zero or one time (optional) · ? — zero or one time (optional)

Pattern: 46 charsInput: 74 chars

100% client-side · private

✓ Valid Examples

GB29NWBK60161331926819
DE89370400440532013000
PL61109010140000071219812874

✗ Invalid Examples

123456789
GB29 NWBK
XX29NWBK60161331926819

Usage & Integration

Validate IBAN natively in your backend or frontend without copying regex strings.

Node / Edge

import { validate } from '@regexto/validators';

validate('iban', '...');

Python

from regexto_validators import validate

validate("iban", "...")

Go

import "github.com/regex-to/validators-go"

valid, err := validators.Validate("iban", "...")

PHP

use RegexTo\Validators\Validator;

Validator::validate('iban', '...');

Rust

use regexto_validators::validate;

let is_valid = validate("iban", "...").unwrap();