Free tools
Financial Tools & Utilities
Free, fast and private utilities for payment teams and developers. No sign-up, no rate limits.
BIN Checker
Look up any card BIN (Bank Identification Number) to find the card brand, type, issuing bank, and country.
Look up a BINCurrency Converter
Convert between 150+ world currencies with live exchange rates. Free, fast, and always up to date.
Convert currencyCard Decline Codes
Look up any card decline response code to understand what it means, common causes, and how to fix it.
Decode a decline
Card issuing platform
Build your card program on Fyatu
Issue virtual and physical Visa & Mastercard cards programmatically — real-time webhooks, spend controls and 3D Secure built in.
- Real-time webhooks
- Spend controls
- 3D Secure
- Visa & Mastercard