Bitcoin Halving Calculator (Next Halving and Block Reward)
Enter the current block height from a block explorer.
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Bitcoin Halving Calculator (Next Halving and Block Reward) by TheCalcTools
How the Bitcoin Halving Calculator (Next Halving and Block Reward) works
Bitcoin’s block subsidy started at 50 BTC and halves every 210,000 blocks, about every four years. The fourth halving, at block 840,000 in April 2024, cut it to 3.125 BTC.
The date estimate assumes blocks keep arriving at the average interval you enter; difficulty adjustments keep it close to 10 minutes.
The formula
Worked example
Using the default values shown in the calculator:
| Current block height | 970000 |
|---|---|
| Today | 2026-10-17 |
| Average minutes per block | 10 |
- At block 970,000 the subsidy is 3.125000 BTC.
- The next halving is at block 1,050,000, 80,000 blocks away, around 24 April 2028.
Result:
| Current block subsidy (BTC) | 3.125000 |
|---|---|
| Next halving at block | 1,050,000 |
| Blocks remaining | 80,000 |
| Estimated date | 24 April 2028 |
| Subsidy after the next halving (BTC) | 1.562500 |
| Halvings so far | 4 |
Frequently asked questions
When does bitcoin issuance end?
The subsidy keeps halving until it rounds to zero around the year 2140, with total supply just under 21 million BTC.
Sources and further reading
- Nakamoto S (2008). Bitcoin: A Peer-to-Peer Electronic Cash System
- Bitcoin developer documentation: Block chain
- Wikipedia: Bitcoin
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This calculator gives estimates for information only. It is not financial advice, and your lender's or provider's figures will govern. Rates, fees and rules vary. See our disclaimer.