Decoders
Crack real-world codes: VINs, card numbers, Morse, barcodes, number plates.
- 🚗 VIN decoder
- 💳 Card number checker (Luhn)
- 📡 Morse code decoder
- 🚘 UK number plate age
- 🏷️ Barcode check digit (EAN-13)
- 📚 ISBN-10 validator
- 🗝️ Crack the Caesar cipher
- 🔢 Binary and hex decoder
- 🏛️ Roman numerals to numbers
- 📮 UK postcode parser
- 🎙️ NATO phonetic spelling
- 🏦 IBAN validator
- 🏥 NHS number checksum
- ⏱️ Unix timestamp decoder
- 🌐 Subnet calculator
- 🧬 Base64 by hand