Bitcoin laboratory
Explore monetary rules by block height, convert money to satoshis and measure transaction fees. Transparent calculations run in your browser.
The total adds the maximum scheduled subsidies through the selected block, including the unspendable 50 BTC genesis subsidy. It is not spendable or circulating supply: unclaimed subsidies and lost coins are separate issues. Fees transfer existing BTC and do not create new supply. Rules could change only through changes in network consensus.
Code and methodology · Bitcoin Core / GetBlockSubsidy ↗Money to satoshis
Indicative satoshis— satsConversion at the selected spot pair price, rounded down to whole satoshis. No purchase is executed. Actual price, fees and spreads can differ.
Transaction fee laboratory
Estimated transaction fee140 satsRounded up to a whole satoshi. Actual size depends on inputs, outputs and script types. The chosen rate does not guarantee confirmation time.
Inputs stay in your browser; the simulator does not send or save them.
How to read these data
The total adds the maximum scheduled subsidies through the selected block, including the unspendable 50 BTC genesis subsidy. It is not spendable or circulating supply: unclaimed subsidies and lost coins are separate issues. Fees transfer existing BTC and do not create new supply. Rules could change only through changes in network consensus.
Inputs stay in your browser; the simulator does not send or save them.