All Tools
34 free, browser-based tools — no sign-up, no tracking, nothing ever leaves your device unless a tool says otherwise.
Token Approval Checker & Revoker
Find every token approval an address has ever granted, spot the risky ones, and revoke them — no wallet connection required just to check.
ETH Unit Converter
Convert between Wei, Gwei, and ETH live as you type — no rounding surprises when you're reading a contract or a receipt.
ABI Encoder / Decoder
Encode function calls into calldata, or decode raw calldata back into readable arguments against any ABI.
Multi-Chain Gas Tracker
Live gas prices across five chains, auto-refreshed, with real cost estimates for transfers, swaps, and NFT mints.
Address Tools
Validate any EVM address, convert it to checksummed form, and generate a scannable QR code — all client-side.
Hex Converter
Convert between hex, decimal, and UTF-8 text live as you type — for reading raw calldata, token IDs, or any on-chain byte string.
Keccak-256 Hash & Selector Generator
Hash any text or hex bytes with Keccak-256, and get the 4-byte function selector for free when you hash a function signature.
Private Key → Address
Derive the public address for a private key, entirely offline in your browser — for verifying test wallets, never anything holding real funds.
Vanity Address Generator
Generate an Ethereum address starting or ending with characters you choose, brute-forced locally in your browser — nothing is ever sent anywhere.
Mnemonic Generator
Generate a fresh BIP-39 seed phrase (12–24 words) using your browser's secure randomness — fully offline, nothing stored or transmitted.
Calldata Decoder
Paste raw transaction calldata and get a readable breakdown — recognizes common ERC-20/721/1155 and DEX functions automatically, no ABI needed.
Signature Verifier
Recover the address that signed a message or EIP-712 typed data, and check it against the address you expected — no RPC call needed.
Gas Cost Calculator
Multiply gas units by gas price to get the real cost of a transaction in ETH — with presets for transfers, swaps, and mints.
Token Decimals Converter
Convert between a token's raw base-unit amount and its human-readable amount for any decimals — not just ETH's fixed 18.
Position Size Calculator
Risk a fixed % of your account on every trade — enter your stop-loss, get the right position size.
Profit/Loss Calculator
Entry price, exit price, amount, and fees — your exact net P/L in dollars and percent.
Staking / APY Compound Calculator
See what a staking APR is actually worth once daily, weekly, monthly, or continuous compounding is applied.
Impermanent Loss Calculator
How much a 50/50 liquidity pool underperforms just holding, for any price move between the pair.
DCA Calculator
Backtest dollar-cost averaging on real historical prices — what would regular fixed-dollar buys actually be worth today?
Multi-Chain Wallet Balance Checker
Paste any address and see its native token balance across Ethereum, BNB Chain, Base, Arbitrum, and Polygon at once.
ENS Lookup
Resolve an ENS name to an address, or an address to its primary ENS name.
Transaction Status & Details Viewer
A transaction's status, block, value, gas used, and total fee — from its hash alone.
Block Countdown Timer
Estimated time until a target block number is reached — for unlocks, forks, or scheduled events.
Contract Verification Checker
Is this contract's source code actually verified? See through proxies to their real implementation.
Honeypot / Scam Token Checker
Simulate a real buy-then-sell before you risk anything — spot tokens that let you buy but not sell.
NFT Portfolio Viewer
Paste any wallet address and see every NFT it holds — no wallet connection required.
Smart Contract Generator
Spin up ERC-20, ERC-721, and ERC-1155 starter contracts from audited patterns via a simple guided form.
Token Launch Cost Estimator
What would deploying your contract actually cost, on each chain, right now?
Contract Diff Tool
Compare the verified source of two contracts, line by line.
Wallet Activity Analyzer
A fun on-chain activity score out of 100 — fully transparent formula.
Gas Usage Optimizer Hints
Paste a contract, get well-known gas-saving patterns flagged.
Multisig Transaction Builder & Decoder
Build a Safe-compatible batch JSON, or decode a MultiSend blob.
Merkle Tree Generator
Addresses in, a root and per-address proofs out — OpenZeppelin-compatible.
Batch Balance & Allowance Checker
Check hundreds of addresses' balances (and allowances) in one request.