Online Validators
Instantly validate credit cards, IBAN, VAT numbers, ISBN, EORI, BIC/SWIFT codes, and SSN. Free verification tools for financial, business, and personal identification numbers.
Use a Validator NowCredit Card Validator
Validate credit card numbers, check card type (Visa, Mastercard, Amex), and verify using the Luhn algorithm.
IBAN Validator
Verify International Bank Account Numbers (IBAN) for European and worldwide bank accounts. Check format and country code.
VAT Validator
Validate European VAT numbers (Value Added Tax). Check EU business tax identification numbers for compliance.
ISBN Validator
Validate book ISBN numbers (ISBN-10 and ISBN-13). Check if book identification numbers are formatted correctly.
EORI Validator
Verify Economic Operators Registration and Identification (EORI) numbers for import/export businesses in the EU.
BIC/SWIFT Validator
Validate Bank Identifier Codes (BIC) and SWIFT codes for international bank transfers. Check 8 or 11 character codes.
SSN Validator
Validate US Social Security Numbers (SSN). Check format and basic validity of 9-digit identification numbers.
Why Validation Tools Matter
In today's digital economy, validating financial and business identification numbers is crucial for accuracy, compliance, and fraud prevention. Our free online validators help you verify credit cards, bank accounts, tax numbers, and other critical identifiers instantly.
Key Benefits of Using Validators
Financial Security
Validate credit card numbers and IBANs before processing payments to prevent errors and fraud. Ensure bank details are correct before initiating transfers.
Business Compliance
Check VAT numbers for EU tax compliance, verify EORI for customs, and validate BIC/SWIFT codes for international banking regulations.
Data Accuracy
Prevent data entry errors by validating ISBN numbers for publishing, SSN for employment verification, and other identification codes.
Save Time & Money
Catch invalid numbers before processing, avoiding failed transactions, compliance fines, and customer service issues.
Common Validation Use Cases
- E-commerce: Validate credit cards before charging customers, reducing payment failures and chargebacks
- International Banking: Verify IBAN and BIC/SWIFT codes before wire transfers to ensure funds reach the correct account
- EU Business: Check VAT numbers for intra-EU transactions and EORI for customs declarations
- Publishing: Validate ISBN numbers when cataloging books, preventing inventory and sales issues
- HR & Payroll: Verify SSN format for employment verification and tax reporting compliance
Frequently Asked Questions
Are these validators free to use?
Yes, all validation tools are completely free. You can validate credit cards, IBAN, VAT, ISBN, EORI, BIC/SWIFT, and SSN numbers without any cost or registration. Use them as many times as needed.
How do credit card validators work?
Credit card validators use the Luhn algorithm (also known as mod-10) to verify that a card number is mathematically valid. This checks the format and checksum but does not verify if a card is active or has funds—only the issuing bank can confirm that.
Can I validate international bank accounts?
Yes, our IBAN validator checks International Bank Account Numbers used in Europe and many other countries. It verifies the country code, length, and checksum. For international transfers, also validate the BIC/SWIFT code to ensure the bank identifier is correct.
Is my data safe when using these validators?
Absolutely. All validation happens in your browser using JavaScript—no sensitive data is transmitted to our servers. We do not store, log, or share any numbers you validate. Your privacy and security are our priority.
What if a validator says my number is invalid?
If a validator reports an error, double-check the number for typos. For critical numbers like IBAN or VAT, contact the issuing authority (bank or tax office) to verify. Our validators check format and checksums but cannot confirm if an account or registration is currently active.
Check Your Numbers Instantly
Ensure accuracy and compliance with our free validation tools. Validate credit cards, bank accounts, tax numbers, and more in seconds.