Bitcoin Transaction Size and Fee Estimator

Bitcoin Transaction Size and Fee Estimator

Transaction Size

Segwit stands for Segregated Witness and was introduced in BIP-0141 (Bitcoin Improvement Proposal 141). The size of a Segwit transaction is lower than the size of a legacy Bitcoin transaction, as Segwit reduces the overall size of the transaction.
Formula (For Segwit Bitcoin Addresses):
bytes = Number of Input * 68,5 + Number of Outputs * 31 + 10

Transaction Fee

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