Bitcoin Halving Calculator
Enter the current block height, which any Bitcoin explorer shows, and this works out the rest.
Runs entirely in your browser. Nothing you type is sent anywhere.
What a halving does
Every 210,000 blocks, roughly four years, the reward paid to miners halves. New supply issuance drops immediately by half. It does not change demand, and the effect on price is argued about endlessly.
Common questions
How often does Bitcoin halve?
Every 210,000 blocks, which is roughly every four years at ten minute average block times.
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Risk warning: crypto is highly volatile and largely unregulated. This is an information tool, not financial advice.