Web3

Web3 utilities for builders

Wallet address checker (ENS, format, checksum), ETH ↔ Wei converter. Lightweight, no wallet connection required.

2 tools

Wallet Address Checker
Validate Ethereum (EIP-55), Bitcoin (legacy/segwit/bech32), and Solana addresses. Browser-only, no blockchain queries.
ETH ↔ Wei ↔ Gwei Converter
Convert between Ethereum units (wei, gwei, ether, etc.). BigInt math, no precision loss.