Cryptography Tools
Encrypt and decrypt securely with browser-based tools. Work with AES/RSA, ciphers and keys while keeping your data private.
Blockchain Tools 9
ENS Resolver
Free ENS resolver to lookup Ethereum Name Service domains and wallet addresses. Convert ENS names to addresses and reverse lookup addresses to ENS names instantly.
Keccak SHA3 Hasher
Generate Keccak-256, Keccak-512, SHA3-256, SHA3-512 hashes online. Free Ethereum-compatible hash tool for smart contracts and blockchain development.
ABI Encoder / Decoder
Encode and decode Ethereum smart contract function call data. Convert ABI signatures to calldata and decode transaction input data.
Checksum Address Converter
Convert Ethereum addresses to EIP-55 checksum format. Validate and format ETH, BSC, Polygon addresses with mixed-case checksums for error detection.
EVM Vanity Address Generator
Generate custom EVM vanity addresses with personalized prefix/suffix. Create unique Ethereum, BSC, Polygon addresses. Fast, secure, browser-based tool.
Bitcoin Unit Converter
Convert Bitcoin units instantly: BTC, satoshi, mBTC, bits and more. Free online converter with fiat currency support and precise calculations.
EVM Transaction Decoder
Decode EVM raw transaction hex for Ethereum, BSC, Polygon, Arbitrum, Optimism, Avalanche. View transaction details, gas, value, data, and signatures.
BIP39 Mnemonic
Generate and validate BIP39 mnemonic seed phrases. Create secure 12-24 word recovery phrases for crypto wallets. Convert mnemonic to seed hex instantly.
Crypto Address Validator
Validate cryptocurrency addresses for Bitcoin, Ethereum, Solana, Cardano, and 10+ blockchains. Auto-detect address format and verify validity instantly.
Developer Tools 11
Encoding 11
Base32 Encoder/Decoder
Free online Base32 encoder and decoder tool. Encode text to Base32 or decode Base32 to text instantly. Supports RFC 4648 standard Base32 encoding with optional padding. Perfect for developers working with data encoding, QR codes, and case-insensitive encoding systems.
Base58 Encoder/Decoder
Free online Base58 encoder and decoder tool. Encode text to Base58 or decode Base58 to text instantly. Uses Bitcoin alphabet without confusing characters (0, O, I, l). Perfect for developers working with cryptocurrencies, blockchain, Bitcoin addresses, and human-readable encoding.
Base64 Encoder/Decoder
Free online Base64 encoder and decoder tool. Encode text to Base64 or decode Base64 to text instantly. Supports UTF-8, ASCII, URL-safe encoding and multiple character sets. Perfect for developers working with APIs, data encoding, and web development.
Base85 Encoder/Decoder
Free online Base85 (Ascii85) encoder and decoder tool. Encode text to Base85 or decode Base85 to text instantly. More efficient than Base64 with 25% better compression. Perfect for developers working with PDF encoding, binary data compression, email attachments, and space-efficient encoding.
Bcrypt Hash Generator
Free online Bcrypt hash generator and password encryption tool. Generate secure bcrypt hashes for password storage or verify passwords against existing hashes. Supports customizable salt rounds (cost factor) for optimal security. Perfect for developers implementing secure authentication systems.
Hex Encoder/Decoder
Free online Hexadecimal (Hex) encoder and decoder tool. Convert text to hex or decode hex to text instantly. Supports multiple hex formats: plain, 0x prefix, space-separated. Perfect for developers working with binary data, debugging, color codes, and low-level programming.
JWT Encoder/Decoder
Free online JWT (JSON Web Token) encoder and decoder tool. Create JWT tokens or decode and analyze existing tokens instantly. View header, payload, signature, and claims information. Supports HMAC algorithms (HS256, HS384, HS512). Perfect for developers working with authentication, OAuth, and API security.
MD5 Hash Generator
Free online MD5 hash generator and MD5 encrypt tool. Generate MD5 hash from text instantly. Create 128-bit MD5 checksums for data integrity verification, file comparison, and development testing. Perfect for developers needing quick MD5 hash generation.
SHA-1 Hash Generator
Free online SHA-1 hash generator and SHA-1 encrypt tool. Generate SHA-1 hash from text instantly. Create 160-bit SHA-1 checksums for data integrity verification and development. Fast, client-side SHA-1 hashing.
SHA-256 Hash Generator
Free online SHA-256 hash generator and SHA-256 encrypt tool. Generate SHA-256 hash from text instantly. Create 256-bit SHA-256 checksums for blockchain, Bitcoin, SSL certificates, and secure data integrity. Industry-standard cryptographic hash function.
SHA-512 Hash Generator
Free online SHA-512 hash generator and SHA-512 encrypt tool. Generate SHA-512 hash from text instantly. Create 512-bit SHA-512 checksums for maximum security, data integrity, and cryptographic applications. Most secure SHA-2 family algorithm.
