This FAQ provides clear, beginner-friendly answers to "wie viele bitcoins gibt es" (how many bitcoins exist), covering Bitcoin's fixed supply of 21 million coins, the mining schedule, and what happens when all bitcoins are mined. Whether you're new to cryptocurrency or researching Bitcoin's economic model, these answers will help you understand the fundamentals of Bitcoin's supply cap.

How many bitcoins will ever exist in total?

The maximum number of bitcoins that will ever exist is exactly 21 million. This hard cap is built directly into Bitcoin's source code through its protocol, making it mathematically impossible to exceed this limit. No matter how much computing power is devoted to mining, the total supply can never reach 21,000,000 BTC.

This fixed supply model distinguishes Bitcoin from traditional fiat currencies, which central banks can print in unlimited quantities. The 21 million cap was chosen by Bitcoin's creator, Satoshi Nakamoto, to create digital scarcity similar to precious metals like gold.

How many bitcoins are currently in circulation?

Approximately 19.6 million bitcoins are currently in circulation as of 2026, meaning about 93% of the total supply has already been mined. New bitcoins are created with each block mined on the Bitcoin blockchain through the mining process, gradually approaching the 21 million ceiling.

The remaining bitcoins take longer to generate because of the halving mechanism built into Bitcoin's protocol. Every four years, the reward for mining a new block is cut in half, slowing the rate at which new coins enter circulation.

Why is Bitcoin's supply capped at exactly 21 million?

Bitcoin's 21 million supply cap was designed to create digital scarcity and serve as a store of value, similar to gold. Satoshi Nakamoto implemented this limit to prevent inflation that plague traditional currencies controlled by central banks.

The mathematical precision of 21 million allows for easy divisibility, with each bitcoin divisible into 100 million smaller units called satoshis (sats). This ensures the currency remains functional even as the total supply approaches its ceiling and individual coin values increase.

What happens when all 21 million bitcoins are mined?

Once all 21 million bitcoins are mined, miners will no longer receive block rewards for validating transactions. Instead, they will earn income solely from transaction fees paid by users sending Bitcoin across the network.

This transition is expected to create a self-sustaining economic model where miners continue to secure the network through transaction fee incentives. Users may experience higher fees during peak times, but the Bitcoin network will remain operational indefinitely without requiring new coin issuance.

When will the last bitcoin be mined?

The final bitcoin is projected to be mined around the year 2140, based on current mining schedules and the halving cycle that occurs approximately every four years. At that point, all 21 million bitcoins will exist in circulation, with no new coins entering the system.

This timeline depends on the continued functioning of Bitcoin's difficulty adjustment mechanism and mining participation. The halving events progressively reduce block rewards from 50 BTC to 25 BTC, then 12.5 BTC, 6.25 BTC, and so on, extending the timeline to reach the final coin.

How many bitcoins have been permanently lost?

Estimates suggest that 3-4 million bitcoins are permanently lost due to forgotten private keys, destroyed hardware wallets, and early mining losses. These coins are technically still part of the circulating supply but are inaccessible.

Common causes of permanent loss include:

  • Early miners who disposed of hard drives containing Bitcoin keys
  • Lost passwords to hardware or software wallets
  • Wallet owners who passed away without sharing access information
  • Accidental transfers to invalid addresses

This loss effectively reduces Bitcoin's available supply, potentially increasing the value of recoverable coins over time.

How does Bitcoin's fixed supply compare to traditional currencies?

Unlike Bitcoin's fixed 21 million cap, traditional fiat currencies like the US dollar or euro have no predetermined supply limit. Central banks can increase the money supply through quantitative easing, printing money, or adjusting interest rates, potentially leading to inflation.

Bitcoin's predetermined supply schedule makes it deflationary by design, as the currency becomes increasingly scarce over time while demand may grow. This contrasts sharply with fiat currencies, which governments can expand whenever economic circumstances warrant.

Can Bitcoin's 21 million supply cap be changed?

Changing Bitcoin's 21 million supply cap would require a hard fork that majority of the network would need to adopt. Given Bitcoin's decentralized nature and strong community consensus around the existing monetary policy, such a change is considered extremely unlikely.

Bitcoin's resistance to modification of its core protocol has become a fundamental feature that investors rely upon. Any attempt to alter the supply cap would likely result in a fractured community and potentially create competing cryptocurrencies, as demonstrated by past Bitcoin Cash forks.

Final Thoughts

Understanding Bitcoin's supply mechanics is essential for anyone interested in cryptocurrency investing or blockchain technology. The answer to "wie viele bitcoins gibt es" remains straightforward: exactly 21 million, with approximately 19.6 million currently in circulation. This fixed supply model represents a revolutionary approach to monetary policy in the digital age.

Bitcoin's scarcity is enforced mathematically rather than by trusted institutions, making it uniquely valuable as both a digital currency and a potential store of value. As we approach 2140 and the final coins are mined, Bitcoin's economic model will transition to a fee-based system that continues rewarding network participants.

Whether you're evaluating Bitcoin as an investment or studying its technical foundations, the supply cap remains the defining characteristic that sets it apart from all traditional forms of money. The limited supply, combined with growing adoption and institutional interest, continues to shape Bitcoin's role in the global financial landscape.