The toolkit
A tool for the detail
that matters.
40 core tools and an EVM wallet workflow. Browse local calculators, wallet generators and public network lookups. Check each tool’s supported behavior before use.
Use tools with care. Calculations and wallet secrets stay local. Public lookups use the Rust backend. Brain wallets remain educational only. Do not use unaudited wallet tools with real funds.
Wallets & keys15 TOOLS
Bitcoin Wallet Generator & Creator
Create a Bitcoin wallet locally: generate a BIP39 seed phrase and legacy, SegWit or Taproot address on your chosen network.
Runs locallyEthereum Wallet Generator & Creator
Create an Ethereum wallet locally with a BIP39 seed phrase and EIP55 address. Keys stay on your device; Ethereum mainnet account derivation.
Runs locallyLitecoin Wallet Generator
Generate a Litecoin mainnet mnemonic and legacy address locally.
Runs locallyDogecoin Wallet Generator
Generate a Dogecoin mainnet mnemonic and legacy address locally.
Runs locallyMulti-Coin Wallet Generator & Creator
Create a Bitcoin, Ethereum, Litecoin or Dogecoin mainnet wallet locally. Generate one wallet for your selected coin, with a private seed backup.
Runs locallyBIP39 Seed Phrase Generator
Generate an English BIP39 mnemonic using cryptographic randomness locally.
Runs locallyBIP39 Seed Phrase Validator
Understand mnemonic word-list and checksum validation.
Runs locallyMnemonic to Seed Converter
Learn the distinction between a mnemonic phrase and its derived seed.
Runs locallyHD Wallet Derivation Explorer
Derive a bounded set of Bitcoin addresses locally from a seed and path.
Runs locallyPrivate Key to Bitcoin Address
Understand the relationship between a private key and Bitcoin addresses.
Runs locallyWIF Converter
An overview of Bitcoin private-key export encoding.
Runs locallyXPUB / XPRV Decoder
Understand extended-key metadata and the risks of sharing it.
Runs locallyBitcoin Paper Wallet Generator
Learn the limitations of printing a Bitcoin key backup.
Runs locallyBrain Wallets: Security & Risks
Why memorable phrases are unsafe for protecting real Bitcoin funds.
Educational onlyEVM Wallet Generator & Creator
Create Ethereum account keys locally and understand EVM network boundaries.
Runs locallyTransactions & fees11 TOOLS
Raw Transaction Decoder
Learn what a Bitcoin transaction decoder can reveal without broadcasting.
Runs locallyRaw Transaction Broadcaster
Understand the explicit review step before broadcasting a signed transaction.
Network lookupTXID Calculator
Understand transaction identifiers and their distinction from witness identifiers.
Runs locallyBitcoin Fee Estimator
Calculate Bitcoin transaction fees from virtual size and a fee rate in sat/vB. Review the resulting fee in satoshis.
Runs locallyTransaction Size & Weight Calculator
Understand serialized bytes, transaction weight and virtual bytes.
Runs locallyRBF Fee Bump Calculator
Learn the review process for increasing a replacement transaction fee.
Runs locallyCPFP Fee Calculator
Learn how a child transaction can affect a transaction package’s fee rate.
Runs locallyPSBT Decoder
Inspect the purpose of a partially signed Bitcoin transaction.
Runs locallyPSBT Combiner & Finalizer
Understand combining signatures and preparing a transaction for extraction.
Runs locallyBitcoin Script Decoder
Read the role of script bytes and opcodes in Bitcoin spending conditions.
Runs locallyBitcoin Message Sign & Verify
Understand the difference between message signing and transaction authorization.
Runs locallyAddresses & payments6 TOOLS
Bitcoin Address Generator
Generate a Bitcoin receiving address from a public key. Choose legacy, SegWit or Taproot and validate the intended network.
Runs locallyUTXO Checker
Check a Bitcoin mainnet transaction outpoint for an unspent output.
Network lookupBitcoin Payment URI Generator
Learn how a Bitcoin payment request can include an address and amount.
Runs locallyBitcoin QR Payment Generator
Understand QR codes for sharing a Bitcoin payment request.
Runs locallyBitcoin Address Validator
Learn what address-format validation can and cannot tell you.
Runs locallyBitcoin Address Balance Checker
Understand a public address balance and its privacy implications.
Network lookupNetwork & mining5 TOOLS
Transaction Confirmation Estimator
Learn why confirmation-time estimates remain uncertain.
Runs locallyBitcoin Mempool Dashboard
Understand pending transactions, fee conditions and snapshot freshness.
Network lookupDifficulty Adjustment Countdown
Learn how a countdown estimates the next Bitcoin difficulty adjustment.
Runs locallyBitcoin Halving Countdown
Understand a block-based estimate for Bitcoin’s next subsidy halving.
Runs locallyBitcoin Block Reward Calculator
Learn the difference between block subsidy and total miner reward.
Runs locallyConverters & encoding4 TOOLS
BTC to Satoshi Converter
Understand Bitcoin units: one BTC equals 100,000,000 satoshis.
Runs locallyBTC to Fiat Calculator
Convert a BTC amount to fiat using a price you supply.
Runs locallyBech32 / Bech32m Encoder Decoder
Understand checksummed encoding and Bitcoin witness address context.
Runs locallyBase58Check Encoder Decoder
Understand Base58Check payloads, version bytes and checksums.
Runs locally