Halving countdown
Halving cycle comparison
What is the Bitcoin halving
The halving is an event written directly into the Bitcoin protocol: every 210,000 blocks (roughly once every four years), the reward miners receive for a mined block is cut in half. This slows the rate at which new bitcoins are created, and supply inflation gradually approaches zero — the total number of coins will never exceed 21 million.
The countdown is based on the current block height and the average time between blocks (~10 minutes), so the estimated date keeps getting more precise. Previous halvings took place in 2012, 2016, 2020, and 2024, and bull markets have historically followed them with a lag — though past performance is no guarantee of the future.
Comparing halving cycles
The chart below the countdown overlays all past cycles on top of each other: the price is set to 100 on each halving day and the X axis shows the months elapsed since. Thanks to the logarithmic axis, the cycles are comparable even though 2012 was about single dollars and today it's tens of thousands. The ongoing cycle is highlighted in orange. The sample is four events, so treat it as a historical curiosity, not a forecast.