About the Bitcoin Halving Countdown
Every 210,000 blocks, which is roughly every four years, the reward that Bitcoin miners get for each new block is cut in half. This page counts down to the next halving. It shows days, hours, minutes and seconds left, the estimated date, how many blocks remain, how far through the current cycle Bitcoin is, the block reward now and after the halving, and the amount of bitcoin mined so far. By default it estimates the block height from the date of block 840,000, which was mined in April 2024. For a sharper number, press the button to read the real block height from mempool.space. Because blocks do not arrive at exactly ten minutes each, the date is an estimate and can move by days.
Updated October 2026
How to use the Bitcoin Halving Countdown
- 1Open the page. The countdown runs by itself, to the second.
- 2Read the estimated date and the number of blocks left.
- 3Press Use the live block height to replace the estimate with the real current block.
- 4Check the reward now, the reward after the halving, and the amount mined so far.
- 5Press Back to the estimate to return to the offline calculation.
How the halving schedule works
Bitcoin's rules fix the reward in advance. It begins at 50 BTC per block and halves at blocks 210,000, 420,000, 630,000 and so on, giving 25, 12.5, 6.25 and, since 2024, 3.125 BTC. After 33 halvings the reward would drop to less than one satoshi, and the subsidy ends. The sum of all rewards is just under 21 million BTC.
Because the schedule depends on block count and not on dates, the calendar date of the next halving is a forecast. If blocks come a little faster than ten minutes, the date moves closer. If miners leave the network and blocks slow down, it moves back until the next difficulty change.
Why people watch it
- Miners plan equipment and costs around the reward, because their income per block falls in half overnight.
- Investors follow the supply schedule, since fewer new coins arrive per day after a halving.
- Developers and journalists use the block height to mark time in history.
- Teachers use it to explain Bitcoin's fixed supply.
Next steps
To see how the reward cut changes mining income, use the Bitcoin Mining Profitability Calculator with the new reward. To turn dates into counts, the Days Between Dates tool shows how long remains, and the Countdown Timer can run a timer to a date you choose. To check what a block reward is worth in money, try the Bitcoin Price Converter.
Features
- Live countdown in days, hours, minutes and seconds
- Estimated halving date and blocks remaining
- Progress bar through the current four-year cycle
- Block reward now and after the halving
- Bitcoin mined so far, from the reward schedule
- Optional live block height from mempool.space
- Works offline in estimate mode
Frequently asked questions
What is the Bitcoin halving?
It is a built-in event that cuts the reward for mining a block in half. It happens every 210,000 blocks. The reward started at 50 BTC in 2009, and is 3.125 BTC since April 2024. The rule slows the creation of new bitcoin until the 21 million limit is reached.
When is the next halving?
At block 1,050,000. The countdown on this page estimates the date from the current block height, assuming one block every ten minutes. Real mining speed changes with hash power, so the date can shift by days or weeks.
Why is the date only an estimate?
Blocks are found by chance, about every ten minutes on average. The network adjusts difficulty every 2,016 blocks to keep that average, but a few days of drift are normal. Use the live block height for the sharpest result.
Does the halving change the price?
Nobody can promise that. Some people expect the lower supply growth to push the price up, and others say it is already expected by the market. This page shows facts about the schedule, not predictions.
How much bitcoin has been mined?
The page adds up the block rewards of every block so far. That is the subsidy only, and it is close to, but not exactly, the circulating amount, since some early coins are lost.
What happens when all 21 million are mined?
The last bitcoin will be mined around the year 2140. After that miners earn only transaction fees.
Does the page send my data anywhere?
Only if you press the live block height button, which asks mempool.space for the newest block number. Nothing else is sent.