Transaction Fees: size and fee calculator

Use a dot or comma as the decimal separator; separate thousands with a space.

Enter integer counts: inputs 1–500, outputs 1–50; rate 0–1 000 000 sat/vB. Empty or invalid fields hide results.

Reference rate per 1 BTC: Loading…

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All inputs and outputs use the selected type. Include recipient and change outputs in the output count; the tool adds no extra output automatically. Mixed types and other scripts are outside this model.

Virtual size is the whole transaction weight divided by 4, rounded up. CompactSize counters and the witness marker/flag are included. Each fee is vB size times the applicable rate, rounded up to a whole satoshi.

We assume compressed public keys and 72-byte ECDSA signatures including sighash. P2SH means only P2SH-P2WPKH here. Taproot uses key path, a 64-byte signature with default sighash and no annex; script path and multisig are outside the model.

You supply the rates; they are neither live estimates nor confirmation guarantees. Zero and the upper bound are model limits, not network rules. UTXO values are unknown: funds, dust and wallet acceptance are not checked. Actual signatures and construction can change the size.

Fee value in currency = fee in satoshis / 100 000 000 × reference price per BTC. The market price changes neither your entered sat/vB rate nor the satoshi fee.

Currency conversion is indicative: the rate may be cached and excludes spreads, fees and actual trade execution prices. Results use the currency’s decimal places; rounded display does not replace precise settlement accounting. Use the button to reload the rate. The time means receipt of the response, not the price measurement time.