# How many bitcoins are left to be mined in total?

Jessica Washington · August 4, 2026

> The total supply of Bitcoin is capped at 21 million coins, a limit hardcoded into its protocol to create scarcity and value. As of March 2025...

The total supply of Bitcoin is capped at 21 million coins, a limit hardcoded into its protocol to create scarcity and value.

As of March 2025, approximately 19.7 million Bitcoins have already been mined, meaning there are about 1.3 million left to mine.

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Bitcoin mining is based on a proof-of-work consensus mechanism, where miners compete to solve complex mathematical puzzles to validate transactions on the blockchain.

The mining process is inherently energy-intensive, with estimates suggesting that the Bitcoin network consumes as much energy as some small countries.

Bitcoin undergoes a process called "halving" approximately every four years, which reduces the reward miners receive for solving blocks by half; this mechanism slows down the rate at which new Bitcoins are generated.

The first halving occurred in 2012, reducing the reward from 50 to 25 Bitcoins, and subsequent halvings in 2016 and 2020 further reduced it to 12.5 and then to 6.25 Bitcoins.

The next halving is projected to occur in 2024, which will lower the mining reward to 3.125 Bitcoins, further extending the timeline for when the last Bitcoin will be mined.

It is estimated that the last Bitcoin will be mined around the year 2140, making Bitcoin a deflationary asset over time.

The rate of Bitcoin mining is expected to slow significantly as the number of remaining coins decreases; currently, about 450 new Bitcoins are mined each day.

The Bitcoin network processes about 144 blocks each day, with each block containing a limited number of transactions.

Once all 21 million Bitcoins are mined, miners will no longer receive rewards in the form of new Bitcoins but will instead earn transaction fees for validating transactions.

The scarcity of Bitcoin is designed to prevent inflation, distinguishing it from traditional fiat currencies, which can be printed in unlimited quantities by central banks.

Despite the limited supply, the number of Bitcoin wallets continues to grow, indicating increasing interest and adoption among users.

The Bitcoin network is decentralized, meaning no single entity controls it, which enhances its security and resilience against censorship.

Approximately 95% of all Bitcoins that will ever exist have already been mined, underscoring the accelerated approach to scarcity.

The design of Bitcoin's issuance rate follows an exponential decay function, meaning that while new Bitcoins are still being created, the rate at which they are produced is constantly decreasing.

Bitcoin mining difficulty adjusts approximately every two weeks based on the total computational power of the network, ensuring that blocks are mined at a consistent rate.

The first Bitcoin was mined in January 2009 by its pseudonymous creator Satoshi Nakamoto, and the reward for mining that block was 50 Bitcoins.

The security of the Bitcoin network is maintained by miners who invest in high-powered computing equipment, and the total computational power is referred to as the network's hash rate.

As Bitcoin nears its supply cap, it may lead to increased competition among miners and potentially higher transaction fees, impacting how transactions are processed on the network.

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