21Relay utility

Block Subsidy and Halving Explorer

Explore Bitcoin's subsidy eras, approximate issuance, daily new supply and distance to the next halving by block height or year.

Temporarily unavailable·mempool.space

Detail level

Guided mode keeps the decision focused. Advanced mode reveals extra assumptions.

Keep in mind: Block-height calculations follow Bitcoin's 210,000-block subsidy schedule and integer satoshi rounding.

Explore a point in time

Input modeBlock height

Enter a valid height in the supported range.

Leave blank to use the live block height or current year.

A valid height estimate is required.

Era	Starting height	Subsidy	Approximate year
0	0	50 BTC	~2009
1	210,000	25 BTC	~2013
2	420,000	12.5 BTC	~2017
3	630,000	6.25 BTC	~2021
4	840,000	3.125 BTC	~2025
5	1,050,000	1.5625 BTC	~2029
6	1,260,000	0.78125 BTC	~2033

Methodology, data and limits

Data source: mempool.space. No successful update is currently stored.

Block-height calculations follow Bitcoin's 210,000-block subsidy schedule and integer satoshi rounding.
Year mode converts calendar years to approximate heights using 52,560 blocks per year; actual halving dates depend on block production.
Issued supply is nominal subsidy issuance and does not estimate lost, burned or inaccessible bitcoin.

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Connected workflow

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21Relay utilities are educational planning tools, not financial, tax or investment advice. Verify important decisions independently.