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description=A growing cluster of fast, free crypto calculators, converters and trackers. No fluff, just tools.;

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cryptotools fast crypto calculators converters crypto tools all tools cryptography data studies language english español deutsch français italiano русский українська polski latviešu lietuvių crypto tools that just work fast free single purpose calculators and converters no sign up no clutter calculators crypto profit calculator calculate your crypto profit loss and roi on any trade including buy and sell fees with live prices free instant no sign up runs in your browser bitcoin dca calculator backtest dollar cost averaging into bitcoin or ethereum solana and other major coins and see what regular buys would be worth today staking rewards calculator estimate staking rewards and effective apy from your amount apr duration and compounding frequency crypto compound interest calculator project compound growth of your crypto with periodic contributions and any compounding frequency impermanent loss calculator calculate impermanent loss for a 50 50 liquidity pool from each asset s price change liquidation price calculator find the liquidation price of a leveraged long or short from entry leverage and maintenance margin crypto position size calculator size a trade from your account risk percent entry and stop loss to keep risk under control crypto leverage calculator work out position size and required margin from your collateral and leverage multiplier crypto average cost calculator average down compute your weighted average entry price and cost basis across multiple buys mining profitability calculator estimate daily and monthly mining profit from hashrate network difficulty power cost and coin price crypto tax calculator rough capital gains estimate from your proceeds cost basis and tax rate not tax advice crypto portfolio tax analyzer upload a csv of your trades to compute realized gains cost basis and holdings in your browser nothing uploaded converters hashrate converter convert mining hashrate between h s kh s mh s gh s th s ph s and eh s instantly a fast free hashrate unit converter that runs in your browser gwei to eth converter convert between wei gwei and eth instantly and estimate any ethereum gas fee in usd from the gas units and gas price free no sign up in your browser satoshi to usd converter convert satoshis sats to usd and btc instantly at any bitcoin price you set and back again fast free no sign up runs in your browser cryptography hash generator generate sha 256 sha 512 keccak 256 ripemd 160 md5 and more from text or hex in your browser aes encryption encrypt and decrypt text with aes 256 gcm and a password everything stays in your browser crypto address validator check whether a bitcoin or ethereum address is valid with its type network and checksum base64 hex base58 converter convert text between base64 hex base58 binary and utf 8 encode and decode in your browser bip39 seed phrase generator generate and validate bip39 mnemonic seed phrases 12 24 words and derive the seed in your browser password generator generate strong random passwords with a crypto secure rng length character sets and entropy nothing uploaded jwt decoder decode a json web token jwt inspect its header payload and claims in your browser nothing uploaded hd wallet address generator derive bitcoin legacy segwit and ethereum addresses from a bip39 phrase bip32 44 84 watch only in your browser rsa key generator generate an rsa key pair 2048 3072 4096 bit and export it as pem in your browser nothing uploaded message signer verifier sign and verify a message with an ecdsa secp256k1 key bitcoin ethereum s curve in your browser crypto qr code generator make a qr code for a bitcoin or ethereum address or payment request bip21 eip 681 in your browser merkle tree calculator compute the merkle root and tree of a list of leaves sha 256 or bitcoin double sha 256 in your browser evm bytecode disassembler disassemble ethereum evm bytecode into opcodes and function selectors in your browser vanity address generator generate a custom ethereum vanity address with your chosen prefix in your browser keys never leave your device ethereum function selector compute the 4 byte function selector and event topic keccak256 from a solidity signature in your browser ens namehash calculator compute the ens namehash eip 137 and labelhash of any eth name in your browser proof of work mining simulator mine a block in your browser pick a difficulty and watch sha 256 hash until it beats the target eip 712 typed data hasher compute the eip 712 domain separator struct hash and signing digest from typed data in your browser elliptic curve ecc visualizer see an elliptic curve over a prime field and the point addition group law that secures crypto keys shamir secret sharing split a secret into n shares where any t reconstruct it in your browser nothing uploaded ethereum transaction decoder decode a raw ethereum transaction legacy eip 1559 into its fields and recover the sender 2026 _mr coast_ for informational purposes only not financial advice we use 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