Crypto & Web3 Tools
Free tools for Ethereum, Web3, and security: unit conversions, gas estimation, token math, wallet validation, hashing, and certificate inspection. All run locally in your browser.
ETH Unit Converter
Convert between Wei, Gwei & Ether
Gas Fee Calculator
Calculate Ethereum gas costs in USD
Token Decimal Calculator
Convert raw token amounts to readable values
Wallet Checksum Generator
Validate & checksum Ethereum addresses
Solidity ABI Encoder
Encode function selectors & parameters
Keccak256 Generator
Multi-hash generator with SHA & Keccak
Hash Generator
Generate MD5, SHA-1 & SHA-256 hashes
Bcrypt Generator
SHA-256, SHA-512, SHA-1 with salt support
Password Generator
Generate strong random passwords
Password Breach Checker
Check if passwords appear in known breaches
Hash Identifier
Identify hash types from sample strings
Public Key Fingerprint
Generate SSH key fingerprints
TLS Certificate Decoder
Decode and inspect TLS/SSL certificates
Hash Examples
Password Strength Analysis
Related Discovery Pages
Related Hubs
About Crypto & Web3 Tools
DuskTools brings together a curated set of free, browser-based utilities for blockchain developers, smart-contract auditors, and anyone working in the Web3 ecosystem. Convert between Wei, Gwei, and Ether instantly, estimate real-time gas costs in USD, and translate raw token amounts into human-readable decimals for any ERC-20 contract. The wallet checksum generator validates Ethereum addresses according to EIP-55, catching typos before they lead to lost funds. For Solidity developers, the ABI encoder lets you construct function selectors and encoded call data without spinning up a local node. Cryptographic tooling includes Keccak-256, MD5, SHA-1, SHA-256, SHA-512, and bcrypt hashing, plus a hash identifier that detects the algorithm from a sample digest. Password security features let you generate high-entropy credentials, check them against known breach databases, and visualize estimated crack times. All computations execute client-side using JavaScript and WebAssembly, ensuring private keys, wallet addresses, and passwords never leave your machine. Whether you are deploying a DeFi protocol or simply verifying a transaction hash, these tools provide a fast, private, zero-install workflow.