Two small tools for clearer questions. No live market data, wallet connections or automated safety ratings.
01 / HYPOTHETICAL ARITHMETIC
Bitcoin transaction fee model
Multiply a transaction’s virtual size by an assumed fee rate. The default is an example, not a current network quote.
Illustrative fee
Formula: ceil(vbytes × sat/vB). Rounded up to a whole satoshi; 100,000,000 satoshis = 1 BTC. At 140 vB and 5 sat/vB, the fee is 700 sats.
This does not estimate transaction size, predict confirmation time, account for package-policy requirements, or include exchange withdrawal charges. Actual signed size can differ from a wallet estimate. Check the transaction in a trusted wallet before signing.