Economically Unspendable Bitcoin UTXO Calculator

This calculator will give you an idea of how much it costs to spend a UTXO with specific characteristics. When that cost is computed, we can determine what the viable floor value of that type of UTXO is for any given transaction fee rate, which means you should avoid receiving deposits below that value.

If you want to understand how transaction input sizes get calculated, check out the explanation on the Bitcoin Optech Calculator

What are the UTXO's characteristics?

Size in virtual bytes:
What fee rate should you choose? You can see the past 5 years of transaction fee rates here. During periods of high demand, fees can easily exceed 100 satoshis per virtual byte.

This tool is 100% open source code

The Economically Unspendable Bitcoin UTXO Calculator repository can be found at


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