Crypto tools
Calculators that show their working. Everything runs in your browser and nothing you type is sent anywhere.
Calculators
Crypto profit calculatorProfit or loss after fees, percentage return and break-even price.Unit converterBTC ↔ satoshis, ETH ↔ gwei ↔ wei, exactly, with dollar value.True cost of buyingTrading fee + spread + withdrawal fee: what you really get.Recurring purchase simulatorDollar-cost averaging: average cost and value over time.Network fee calculatorGas and gwei, or sat/vB, turned into dollars.Scam checkerA private red-flag checklist for offers and messages.Blockchain demoEdit a block, break the chain, mine it back.