Bitcoin Halving Countdown

Live countdown to the next Bitcoin halving event. Track the current block height, blocks remaining, estimated date, and explore the complete history of all Bitcoin halvings.

The next Bitcoin halving is approaching.
Block rewards will be cut in half — changing mining economics forever.

Bitcoin's halving is a built-in event that reduces the block reward by 50% every 210,000 blocks (roughly every four years). This mechanism controls Bitcoin's supply and is one of the most anticipated events in cryptocurrency. Track the countdown live below.

Next Halving Countdown

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Bitcoin Halving History

Bitcoin has undergone four halvings since its creation. Each event cut the block reward in half, reducing the rate at which new BTC enters circulation. The table below shows every halving — past, present, and upcoming.

Halving Date Block Reward
Genesis Jan 3, 2009 0 50 BTC
1st Nov 28, 2012 210,000 25 BTC
2nd Jul 9, 2016 420,000 12.5 BTC
3rd May 11, 2020 630,000 6.25 BTC
4th Apr 19, 2024 840,000 3.125 BTC
5th Next ~2028 1,050,000 1.5625 BTC

Bitcoin Supply Progress

Total Mined vs. Maximum Supply -- / 21,000,000 BTC
0 BTC 21,000,000 BTC (hard cap)

What Is Bitcoin Halving?

Bitcoin halving (sometimes called "halvening") is a pre-programmed event written into Bitcoin's source code by Satoshi Nakamoto. Every 210,000 blocks — roughly every four years — the reward that miners receive for adding a new block to the blockchain is reduced by exactly 50%.

When Bitcoin launched in 2009, miners earned 50 BTC per block. After the first halving in 2012, the reward dropped to 25 BTC. Today, following the fourth halving in April 2024, miners receive 3.125 BTC per block. After the next halving, this will fall to 1.5625 BTC.

Supply Scarcity

Halving ensures only 21 million BTC will ever exist. By reducing the issuance rate over time, Bitcoin becomes increasingly scarce — similar to precious metals like gold.

Historical Price Impact

Historically, each halving has preceded significant price increases — though past performance doesn't guarantee future results. The reduced supply of new BTC entering the market shifts the supply-demand balance.

Mining Economics

Each halving puts pressure on miners to operate more efficiently. Less efficient operations become unprofitable, while miners with low electricity costs and modern hardware — like NoxHash's fleet in Kazakhstan — maintain an advantage.

Why the Halving Matters for Miners

When the block reward drops from 3.125 to 1.5625 BTC, miners' direct revenue per block is cut in half overnight. This has several important implications:

Revenue Drops 50%

Block rewards are the primary income source for miners. A 50% cut means miners must either find efficiencies or rely on BTC price appreciation to remain profitable.

Efficiency Becomes Critical

Electricity is miners' biggest cost. Operations in regions with cheap power — like Kazakhstan at $0.035/kWh — gain a competitive edge as less efficient miners shut down.

Difficulty May Adjust

If unprofitable miners leave the network, the difficulty adjusts downward, making remaining miners more profitable — a self-balancing mechanism built into Bitcoin.

Transaction Fees Rise

As block rewards decrease, transaction fees become a larger share of miner revenue. Growing Bitcoin adoption and innovations like Ordinals contribute to rising fee income.

Frequently Asked Questions

When is the next Bitcoin halving?
The next Bitcoin halving will occur at block 1,050,000. Based on the average block time of approximately 10 minutes, this is estimated to happen around early 2028. The exact date depends on network conditions, as block times can vary.
How many Bitcoin halvings are left?
There will be a total of 32 halvings. With 4 completed, 28 remain. The final halving is expected around the year 2140, after which no new Bitcoin will be created and miners will rely entirely on transaction fees.
Does the halving affect Bitcoin's price?
Historically, halvings have been followed by significant price increases — the price rose from ~$12 to ~$1,100 after the 2012 halving, from ~$650 to ~$20,000 after 2016, and from ~$8,600 to ~$69,000 after 2020. However, past performance does not guarantee future results. Many factors influence Bitcoin's price beyond the halving.
Is Bitcoin mining still profitable after the halving?
Yes, for efficient operations. Miners with access to cheap electricity and modern, energy-efficient hardware continue to profit after each halving. NoxHash operates in Kazakhstan with electricity at $0.035/kWh and uses the latest ASIC miners (Antminer S21 series, WhatsMiner M60/M66 series) achieving 12–18.5 J/TH efficiency — well positioned for the post-halving environment.
What happens when all 21 million Bitcoin are mined?
When the maximum supply of 21 million BTC is reached (estimated around 2140), no new Bitcoin will be created. Miners will be compensated entirely through transaction fees. By that point, Bitcoin's widespread adoption is expected to generate sufficient transaction volume to sustain mining operations.
Prepare for the halving

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