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Bitcoin has a fixed supply of 21 million coins. As of 2025, approximately 19.84 million bitcoins have been mined, accounting for about 94% of the total supply.
Bitcoin halving
is the process of reducing the block reward given to miners by half, which slows the creation of new BTC and introduces controlled deflation.
This mechanism ensures
predictability and transparency
in Bitcoin’s issuance schedule, making it more reliable as a financial asset — investors know exactly when supply growth will decrease.
Halving also boosts Bitcoin’s scarcity, reinforcing its intrinsic value. This feature, inspired by the limited supply of commodities like gold, was built into the protocol by
Satoshi Nakamoto
to mimic natural resource economics and support long-term value preservation.

968,255
Current block height

81,745
Blocks until halving

$85,832.00
BTC day price
Satoshi Nakamoto designed Bitcoin’s issuance, capping total supply at 21 million coins, unlike fiat currencies which can be printed indefinitely.
When Bitcoin launched in 2009, miners earned
50 BTC per block
. However, the protocol was designed to
halve the block reward every 210,000 blocks
—roughly every four years—to control supply.
As a result:
In 2012, the reward dropped to
25 BTC
In 2016, to
12.5 BTC
In 2020, to
6.25 BTC
And in 2024, to
3.125 BTC
This halving cycle will continue until around 2140, when the reward will fall below one satoshi (0.00000001 BTC), Bitcoin’s smallest unit. By then, all 21 million BTC will have been mined, and miners will earn income solely from
transaction fees.
Halving | Est. Date | Block Height | Block Reward (BTC) |
|---|---|---|---|
0 | – | 0 | 50 |
1 | 11/28/2012 | 210,000 | 25 |
2 | 07/09/2016 | 420,000 | 12.5 |
3 | 05/11/2020 | 630,000 | 6.25 |
4 | 2024 | 840,000 | 3.125 |
5 | 2028 | 1,050,000 | 1.5625 |
To date, there have been four Bitcoin halving events: in 2012, 2016, and 2020, and most recently, on April 20, 2024. All these events have had a significant impact on the price of Bitcoin. Let us take a closer look at each event.
Nov 2012 50 → 25 BTC ~$12 ~$1,000 (+8,200%)
At that time, Bitcoin was a little-known asset valued at approximately $12. However, a year after the event, the value rose to $1000, an increase of more than 80 times. This was the first evidence that halving could affect the market.
July 2016 25 → 12.5 BTC ~$650 ~$19,800 (+2950%)
After this halving, a new bull cycle began, with BTC reaching $19,800 by December 2017. This surge has attracted millions of new users and investors.
May 2020 12.5 → 6.25 BTC ~$8,500 ~$69,000 (+690%)
After its third halving within a year and a half, Bitcoin rose to an all-time high of $69,000 (November 2021). This cycle confirms that halving is an important catalyst for growth.
April 2024 6.25 BTC→ 3.125 BTC ~$28,500 – not counted yet
The last halving happened on April 19-20, 2024, when the reward for miners fell to 3.125 BTC. Bitcoin price changes after halving historically do not happen immediately, the value of the asset changes within 12-18 months and this period has not yet expired, so we continue to monitor the changes.
Historical data suggest that past halving events have often led to significant price spikes, but
Arthur Hayes
, CEO of BitMex,
warns
that while medium-term price increases may occur, the immediate price action before and after the halving could be negative due to entrenched market expectations.
The reason for excitement around the halving event is its potential economic impact, historical patterns of price changes following previous halving events, and the way it influences miners and the cryptocurrency market:
Bitcoin economic model:
Halving is an integral part of the BTC economic model. The lower the supply of BTCs, – the higher they are priced.
History of impact on BTC price:
Past BTC halving events have been accompanied by increased coin volatility over the next 1-1.5 years: the asset’s price can rise by 2000% plus, – as it was in 2016. However, the value of Bitcoin is influenced by many other factors, and its past performance does not guarantee future results.
Impact on miners' income:
Most miners' income comes from rewards distribution for a found block of Bitcoin. Each halving cuts this reward in half, reducing profits unless offset by rising BTC prices or fees.
The fourth halving of Bitcoin took place in April 2024 and now we are waiting for the next Bitcoin halving in 2028.
Predicting the exact date of the next halving is difficult because it depends on block size, but you can rely on
SwapSpace Halving Countdown.
Why is our timer different from the others? It is based not on the average block mining time, which is commonly cited as 10 minutes, but on live blockchain statistics. This timer may alternate, but still, it is the most precise halving countdown.
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This material is provided for informational purposes only and does not constitute financial, investment, or legal advice. Cryptocurrency markets are highly volatile. Cryptocurrency trading involves significant risk and can result in the loss of your invested capital. Always conduct your own research before making any financial decisions.
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