How much Bitcoin is left to mine?
Bitcoin’s total supply is hardcoded at 21 million BTC, a fixed upper limit that cannot be altered without a consensus-breaking change to the protocol. This finite cap is enforced at the protocol level and is central to Bitcoin’s value proposition as a deflationary asset.
As of May 2025, approximately 19.6 million Bitcoin (BTC) have been mined, or about 93.3% of the total supply. That leaves roughly 1.4 million BTC yet to be created, and those remaining coins will be mined very slowly.
The reason for this uneven distribution is Bitcoin’s exponential issuance schedule, governed by an event called the halving. When Bitcoin launched in 2009, the block reward was 50 BTC. Every 210,000 blocks — or approximately every four years — that reward is cut in half.
Because the early rewards were so large, over 87% of the