Encoding, Hash & Security
Free online encoding and security tools: password generator, random number generator, Base32 and Base58 encoding and the Caesar cipher.
Generate strong passwords and random numbers, and encode or decode text with Base32, Base58 and classic ciphers such as the Caesar cipher and ROT13.
Passwords and numbers are generated in your browser with its secure random source, and nothing is sent to us. Remember that encodings and simple ciphers are not encryption.
Base32/Base58 Encode/Decode
Encoding, Hash & Security
Encode text to Base32 or Base58 and decode it back, with correct UTF-8 handling…
Caesar Cipher / ROT13
Encoding, Hash & Security
Encode or decode text with a Caesar cipher (including the classic ROT13 shift), with…
Password Generator
Encoding, Hash & Security
Generate strong, random passwords with your choice of character types and length, using a…
Random Number Generator
Encoding, Hash & Security
Generate random whole numbers in a range you choose, one at a time or…
No tools match your filter.
Frequently asked questions
Is Base64 or a Caesar cipher secure?
No. They are reversible without a key and only hide text from a casual glance.
How long should a password be?
At least 14 to 16 characters for important accounts, ideally stored in a password manager.
More categories
Text Tools
Developer Tools
Converters & Units
Calculators — Math & Everyday
Finance Calculators
Health & Fitness Calculators
Date & Time Tools
Color & CSS Design Tools
Image Tools
PDF & Document Tools
SEO & Marketing Tools
Networking Tools
Education & Student Tools
Business & Productivity
AI-Adjacent Utilities