Blockchain reference, address validation, unit conversion, gas fees, and more.
6 tools
Encode text or hex to Base58, or decode Base58 strings back to hex and UTF-8. Used by Bitcoin addresses, IPFS CIDs, and Solana.
Validate BIP39 seed phrase words against the official 2048-word wordlist. Check for typos — your phrase never leaves your browser.
Compare block times, finality, TPS, consensus mechanisms, and EVM compatibility across Bitcoin, Ethereum, Solana, and more.
Paste a wallet address to instantly validate its format and identify the chain — Ethereum, Bitcoin, Solana, Litecoin, and more.
Convert between Wei, Gwei, and ETH — Satoshi, Bits, mBTC, and BTC — Lamports and SOL. Type in any field and all others update instantly.
Calculate Ethereum transaction fees in Gwei, ETH, and USD. Enter gas limit and gas price — includes presets and an educational reference.