Cryptography Tools

Encrypt and decrypt securely with browser-based tools. Work with AES/RSA, ciphers and keys while keeping your data private.

29 tools available

Blockchain Tools 18

DCA Calculator

Simulate Dollar Cost Averaging for crypto investments. Compare DCA vs lump sum strategy with charts, average cost, ROI, and detailed schedule.

Crypto Profit/Loss Calculator

Calculate crypto trading profit, loss, and ROI instantly. Include buy/sell fees, break-even price, and net returns for any cryptocurrency trade.

Impermanent Loss Calculator

Calculate impermanent loss for DeFi liquidity pools. Compare HODL vs LP returns with weighted pool support for Uniswap, Balancer, and more.

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.

Lido Rewards Tracker

Track your Lido stETH staking rewards in real-time. Monitor multiple wallets, view reward history, and export data in USD, EUR, or GBP.

APR to APY Converter

Convert between APR and APY with different compounding frequencies. Compare daily, monthly, quarterly compounding effects on your interest rates.

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.

Staking Rewards Calculator

Calculate staking rewards with live APY rates from Lido, Rocket Pool, Ether.fi, Aave. Estimate daily, weekly, monthly and yearly returns.

Tokenomics Chart Builder

Create professional tokenomics pie charts for crypto projects. Visualize token allocation with customizable categories, colors, and export to PNG.

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.

Crypto Logo Library

Browse 500+ cryptocurrency logos in high quality. Search Bitcoin, Ethereum, and all major crypto coin icons. Free download for developers.

Mnemonic to Address

Derive wallet addresses from BIP39 mnemonic for Bitcoin, Ethereum, Solana, XRP, TRON, Dogecoin, Cardano and more. 100% client-side, secure.

Developer Tools 11

Encoding 11

Base32 Encoder/Decoder

Encode text to Base32 or decode it back instantly. Supports RFC 4648 standard with optional padding. Ideal for QR codes and case-insensitive systems.

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

Encode text to Base85 (Ascii85) or decode it back instantly. 25% more compact than Base64. Ideal for PDF encoding, binary data and email attachments.

Bcrypt Hash Generator

Generate secure bcrypt hashes for password storage or verify passwords against existing hashes. Customizable salt rounds (cost factor). Free, no signup.

Hex Encoder/Decoder

Convert text to hexadecimal or decode hex to text instantly. Supports plain, 0x prefix and space-separated formats. Ideal for debugging and binary data.

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.