Halving: block subsidy and issuance schedule

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

Enter an integer height of 0–6 930 000. Empty or invalid input hides the result.

Loading…

Source of loaded height: —

Network response assembly time (UTC): —

Data retrieved (UTC): —

Bitcoin has a limited supply because network rules gradually reduce the number of new coins. Nobody can add arbitrary coins and force others to accept them. This makes the issuance schedule knowable in advance. Twenty-one million is its rounded result. Limited supply makes issuance predictable, but the price also depends on whether people want bitcoin.

When a miner produces a valid block, its first transaction can claim the permitted new coins and fees from payments in that block. This first transaction is called coinbase; it is unrelated to the exchange with the same name. Fees transfer existing bitcoin, so they do not increase the total supply.

On mainnet the subsidy starts at 50 BTC and halves every 210 000 blocks, truncating to whole satoshis. The last nonzero block is at height 6 929 999; from 6 930 000 the subsidy is zero. Remaining issuance uses the exact theoretical total, not the rounded 21 million.

The sum includes every permitted subsidy from height 0 through the selected block. It is neither circulating nor spendable supply: it includes the genesis block’s unspendable 50 BTC and does not subtract unclaimed subsidies or lost coins. Fees are not new issuance.

We project a date only for the loaded height: response assembly time plus remaining blocks times 10 minutes. It is neither a block’s mining time nor a fixed deadline. Data from mempool.space or fallback Blockchain.com may be cached; actual block intervals vary.