Bitcoin Halving Countdown
Heads up: official 2028 figures have not been announced yet — this tool uses projections from the latest confirmed rates and current law. We update it as soon as official numbers are published.
Track the countdown to the next Bitcoin halving event. Enter the current block height to see blocks remaining, estimated halving date, reward changes, and Bitcoin supply data — plus a complete history of all previous halvings.
How Bitcoin Halving Countdown Works
Track the countdown to the next Bitcoin halving in 2028. See blocks remaining, estimated date, reward history, and supply impact. Set your parameters in the form above and the tool tracks your progress in real time — all data stays in your browser's local storage.
What Is Bitcoin Halving and Why Does It Matter?
Bitcoin halving is one of the most important events in cryptocurrency. Every 210,000 blocks (approximately every four years), the number of new Bitcoin created per block is cut in half. This mechanism is hardcoded into Bitcoin's protocol and serves as the foundation of its monetary policy — a predictable, transparent, and unchangeable schedule of decreasing inflation.
When Satoshi Nakamoto launched Bitcoin in 2009, miners received 50 BTC for every block they validated. After the first halving in 2012, that dropped to 25 BTC. Then 12.5 in 2016, 6.25 in 2020, and 3.125 BTC after the most recent halving in April 2024. The next halving, expected in 2028, will reduce the reward to just 1.5625 BTC per block.
Halving Schedule
Halving Block = Halving Number × 210,000
Block Reward = 50 BTC ÷ 2^(halving number). Halvings continue until block reward rounds to 0 (~year 2140).
Historical Halving Data
Each halving has historically been followed by a significant bull run in Bitcoin's price, though the magnitude has decreased with each cycle:
- Halving 1 (Nov 2012): Block 210,000 — Reward: 50 → 25 BTC — Price: ~$12 — Peak after: ~$1,100 (91x)
- Halving 2 (Jul 2016): Block 420,000 — Reward: 25 → 12.5 BTC — Price: ~$650 — Peak after: ~$19,700 (30x)
- Halving 3 (May 2020): Block 630,000 — Reward: 12.5 → 6.25 BTC — Price: ~$8,600 — Peak after: ~$69,000 (8x)
- Halving 4 (Apr 2024): Block 840,000 — Reward: 6.25 → 3.125 BTC — Price: ~$64,000
- Halving 5 (est. 2028): Block 1,050,000 — Reward: 3.125 → 1.5625 BTC
The Supply Shock Theory
The economic logic behind halving's price impact is straightforward: if demand stays constant but the rate of new supply is cut in half, price should increase. Before each halving, miners sell a certain amount of BTC daily to cover operating costs. After halving, they have half as much new BTC to sell, reducing selling pressure on the market.
However, it is important to note that this is a simplification. Markets are forward-looking, and halving events are known years in advance. Some argue the halving is already "priced in" before it occurs. The historical price pattern may be influenced by many factors beyond just the supply reduction.
Example
Halving Countdown from Block 890,000
- Current block: 890,000
- Next halving block: 1,050,000
- Blocks remaining: 160,000
- At 10 min/block: ~1,111 days (~3 years)
- Estimated date: ~March 2029
- Current reward: 3.125 BTC
- Post-halving reward: 1.5625 BTC
Bitcoin Supply and Scarcity
Bitcoin has a hard cap of 21 million coins. As of 2026, approximately 19.8 million BTC have already been mined — about 94.3% of the total supply. Only 1.2 million BTC remain to be mined over the next ~114 years. This extreme scarcity, combined with decreasing issuance through halvings, is the foundation of Bitcoin's "digital gold" narrative.
The stock-to-flow (S2F) model, popularized by the pseudonymous analyst PlanB, attempts to quantify this scarcity by comparing existing supply (stock) to annual production (flow). Each halving doubles Bitcoin's stock-to-flow ratio, theoretically making it increasingly scarce relative to commodities like gold and silver. While the model has faced criticism for oversimplification, it illustrates why halvings are considered pivotal events in Bitcoin's economic design.
Impact on Miners
Halvings directly impact mining profitability. When the reward drops 50%, miners' revenue per block is immediately halved. Less efficient miners are forced offline, leading to a temporary drop in network hash rate and difficulty. Over time, the network rebalances as difficulty adjusts downward, making mining profitable again for remaining participants. This cycle has played out consistently after each halving event.
Frequently Asked Questions
What is Bitcoin halving?
Bitcoin halving is a pre-programmed event that cuts the block reward (new BTC given to miners) in half every 210,000 blocks, approximately every 4 years. It reduces the rate at which new Bitcoin enters circulation, making BTC increasingly scarce over time. The halving is hardcoded into Bitcoin's protocol and cannot be changed.
When is the next Bitcoin halving?
The next Bitcoin halving (the 5th) is expected around March-April 2028, at block height 1,050,000. The exact date depends on how quickly blocks are mined. The block reward will drop from 3.125 BTC to 1.5625 BTC.
Why does halving affect Bitcoin's price?
Halving reduces the supply of new Bitcoin entering the market by 50% while demand may stay the same or increase. This supply shock has historically preceded significant price increases. After each of the four halvings, Bitcoin reached new all-time highs within 12-18 months. However, past performance does not guarantee future results.
How many Bitcoin halvings are left?
There will be approximately 28 more halvings after the 2028 event, continuing until around the year 2140 when the block reward becomes so small it rounds to zero. At that point, all 21 million Bitcoin will have been mined, and miners will rely entirely on transaction fees for income.
What happens when all 21 million Bitcoin are mined?
When all 21 million BTC are mined (estimated around 2140), miners will no longer receive block rewards. Instead, they will be compensated entirely through transaction fees paid by users. The network is expected to remain secure as long as transaction fees provide sufficient incentive for miners to continue operating.
Does halving guarantee a price increase?
No. While all four previous halvings have been followed by significant price increases within 12-18 months, this is a small sample size and past performance does not guarantee future results. Market conditions, regulation, adoption rates, and macroeconomic factors all influence Bitcoin's price independently of the halving.