How Many Bitcoin Are There (and How Many Are Left)?
The real numbers behind Bitcoin’s 21 million cap: how many coins exist, how many are left to mine, and how many are lost for good.
Key takeaways
- About 20.1 million bitcoin have been mined as of November 2026, out of a hard cap of just under 21 million.
- Fewer than 900,000 coins are left, released more slowly after every halving until around 2140.
- An estimated 2.3 to 4 million BTC are lost forever, so the supply in real circulation is smaller.
- You never need a whole coin: one bitcoin splits into 100 million satoshis.
How many bitcoin are there? As of November 2026, a little over 20.1 million bitcoin have been mined, out of a fixed maximum of 21 million. That leaves fewer than 900,000 coins still to be created, and they will trickle out slowly over more than a century, with the last fraction of a bitcoin expected around the year 2140.
But the full answer to how many bitcoin are there is more interesting than one number. Millions of coins are believed to be lost forever, a large block sits untouched in wallets linked to Bitcoin’s creator, and the rate of new supply halves roughly every four years. This guide explains the total supply, how many bitcoin are left to mine, how many are realistically available, and why the cap matters for anyone thinking about buying.
Bitcoin Supply at a Glance
Before going into detail, here are the key supply numbers in one place. Figures for mined supply change every ten minutes or so, so treat the current totals as close estimates rather than exact counts.
| Measure | Figure | Notes |
|---|---|---|
| Maximum supply | 21,000,000 BTC | Set in Bitcoin’s code; in practice slightly less (see below) |
| Mined so far | About 20.1 million BTC | Estimate for November 2026 |
| Share already mined | About 95.7% | Based on the estimate above |
| Left to mine | Under 900,000 BTC | Released gradually until around 2140 |
| Current block reward | 3.125 BTC | Since the April 20, 2024 halving |
| New bitcoin per day | About 450 BTC | Roughly 144 blocks a day |
| Next halving | Block 1,050,000, expected around 2028 | Reward falls to 1.5625 BTC |
| Estimated lost coins | About 2.3 to 4 million BTC | Range from several analyses |
| Smallest unit | 1 satoshi = 0.00000001 BTC | 100 million satoshis in one bitcoin |
The 20 millionth bitcoin was a notable milestone. It arrived in March 2026 at block height 939,999, mined by the Foundry USA pool, leaving fewer than one million coins still to be created. Since then, roughly 450 new coins have been mined each day.
Plainly put
There will never be more than 21 million bitcoin, and about 95% of them already exist.
How Many Bitcoin Are There in Total?
The total number of bitcoin that will ever exist is capped at 21 million. This limit is not a company policy or a promise from any organization. It is a result of rules written into Bitcoin’s software, which every node on the network checks independently.
When Satoshi Nakamoto launched Bitcoin in January 2009, the software rewarded miners with 50 new bitcoin for each block they added to the blockchain. The code also said that this reward would be cut in half every 210,000 blocks. Because each reward is half the size of the last, the total adds up to a limit that can never be passed, much like adding 1 + 1/2 + 1/4 + 1/8 and so on approaches 2 but never exceeds it.
Why the real maximum is slightly below 21 million
The 21 million figure is a convenient round number. In practice, the true maximum is a little lower. Block rewards are counted in satoshis, and when the reward is halved, any fraction of a satoshi is rounded down. Over all the halvings, this rounding removes a small amount, so the final total is just under 21 million, commonly calculated at about 20,999,999.98 BTC.
A few other coins can never be spent at all. The 50 BTC reward from the very first block, known as the genesis block, cannot be spent because of how the original code handled it. A small number of other coins are also permanently unspendable for technical reasons, for example where early miners claimed less than the full block reward.
What a satoshi is
Each bitcoin can be split into 100 million smaller units called satoshis, named after Bitcoin’s creator. This means you never need to buy a whole bitcoin. Someone buying $50 of bitcoin simply receives a fraction of one coin, measured in satoshis. Even with a limited supply, there are 2.1 quadrillion satoshis available in total, which is plenty for everyday use.
How Many Bitcoin Are Left to Mine?
With about 20.1 million bitcoin already created, fewer than 900,000 remain to be mined. That might sound like a lot, but the remaining coins will be released very slowly because the block reward keeps shrinking.
At today’s reward of 3.125 BTC per block, and with about 144 blocks found each day, miners create around 450 new bitcoin daily, or roughly 164,000 a year. After the next halving, that drops to about 225 a day. Each later halving cuts the flow again.
When will the last bitcoin be mined?
The last fraction of a bitcoin is expected to be mined around the year 2140. That is not a fixed calendar date. It depends on how quickly blocks are found, which the network keeps close to one every ten minutes on average through an automatic difficulty adjustment.
It is worth knowing how lopsided the timeline is. More than 95% of all bitcoin will have been mined within about 17 years of launch, while the final few percent will take more than 110 years. By the early 2030s, the yearly amount of new bitcoin will already be tiny compared with the total supply.
What happens after all bitcoin are mined?
Once the block reward reaches zero, miners will no longer receive newly created bitcoin. They will instead be paid only through transaction fees, which users already attach to their transactions today. Whether fees alone will be enough to keep the network secure is a long-running debate, but it is a question for the next century, not this one.
The Bitcoin Halving Schedule
The halving is the event that cuts the block reward in half every 210,000 blocks, which works out to roughly every four years. It is the main reason the supply of new bitcoin keeps shrinking.
| Halving | Approximate date | Block height | Reward after halving | New BTC per day (approx.) |
|---|---|---|---|---|
| Launch | January 2009 | 0 | 50 BTC | 7,200 |
| First | November 2012 | 210,000 | 25 BTC | 3,600 |
| Second | July 2016 | 420,000 | 12.5 BTC | 1,800 |
| Third | May 2020 | 630,000 | 6.25 BTC | 900 |
| Fourth | April 20, 2024 | 840,000 | 3.125 BTC | 450 |
| Fifth (expected) | Around 2028 | 1,050,000 | 1.5625 BTC | 225 |
Dates for future halvings are estimates, because blocks are not found on an exact timetable. Around 33 halvings in total will happen before the reward finally rounds down to zero.
Bitcoin’s inflation rate
Because so few new coins are created compared with the existing supply, Bitcoin’s annual supply growth is already low. With about 164,000 new coins a year added to roughly 20.1 million, supply grows by about 0.8% a year. After the 2028 halving, that falls to roughly 0.4%. For comparison, new mining adds roughly 1.5% to 2% a year to the world’s above-ground gold supply.
Bitcoin Supply Milestones Over Time
Looking at the round-number milestones shows how quickly early supply was created and how much the pace has slowed since. Each additional million coins now takes years rather than months.
| Milestone | Approximate timing | What it showed |
|---|---|---|
| First 50 BTC | January 2009 | Bitcoin launches with the genesis block |
| 10.5 million BTC (half of all supply) | Late 2012 | Half of every bitcoin that will exist was mined in under four years |
| 18 million BTC | October 2019 | Reported by FXStreet as leaving 3 million to mine |
| 19 million BTC | April 2022 | Reported by CryptoSlate as leaving 2 million to mine |
| 20 million BTC | March 2026 | Block 939,999, leaving under 1 million to mine |
| About 20.34 million BTC | Around 2028 | Expected supply at the fifth halving |
| 21 million BTC (just under) | Around 2140 | Final fraction of a bitcoin mined |
The gap between the 19 million and 20 million milestones was about four years. The next million coins, if you could count them all, would take more than a century, because the reward will keep halving long before they are all released.
Why early miners got so many coins
In Bitcoin’s first four years, each block paid 50 BTC and very few people were mining. A home computer could find blocks, and coins had little or no market value. That is why early adopters, including Satoshi Nakamoto, accumulated large balances, and why so many early coins were later lost when people did not think them worth protecting.
Today, mining is an industrial business. Large mining companies run specialized machines in data centers, and an individual with a laptop has almost no chance of finding a block. The reward is also much smaller, so the share of supply going to any one miner is tiny compared with the early years.
How Many Bitcoin Are Actually Available?
Not every mined bitcoin is in active circulation. A large share has been lost, and another large share is held for the long term and rarely moves. This is why the number of coins that could realistically be bought or sold is well below 20.1 million.
Lost bitcoin
Bitcoin can be lost forever if the private keys or recovery phrase that control it are lost. Early users often treated bitcoin as an experiment worth very little, so many coins were left on old laptops, discarded hard drives, or forgotten wallets. Our guide on how to set up a Bitcoin wallet explains how to back up yours properly.
There is no exact count of lost coins, but several studies give similar ranges, as summarized in a BitGo review of the research:
- Chainalysis (November 2017): about 2.8 million to 3.8 million BTC lost.
- River Financial (September 2023): about 3 million to 4 million BTC.
- Ledger (November 2025): about 2.3 million to 3.7 million BTC.
- Unchained (April 2026): about 3 million to 3.8 million BTC.
Taken together, a reasonable estimate is that 2.3 million to 4 million bitcoin will never move again. That is roughly 11% to 20% of all coins mined so far.
Satoshi Nakamoto’s coins
Bitcoin’s anonymous creator, Satoshi Nakamoto, is widely estimated to have mined around 1 million to 1.1 million BTC in 2009 and 2010. Those coins have never moved. Nobody knows whether the keys still exist, so they are often counted separately from lost coins. If they ever moved, it would be one of the biggest events in Bitcoin’s history.
Coins held for the long term
Beyond lost coins, a large amount of bitcoin is held by investors who rarely sell, as well as by funds, public companies and governments. Since US spot Bitcoin exchange-traded funds were approved in January 2024, these funds have also become large holders. Coins in long-term storage are still part of the supply, but they are not regularly offered for sale.
Effective circulating supply
Putting these together gives a rough picture of how much bitcoin is genuinely in play.
| Category | Approximate amount |
|---|---|
| Mined to date | About 20.1 million BTC |
| Minus estimated lost coins | 2.3 to 4 million BTC |
| Minus coins linked to Satoshi | About 1 to 1.1 million BTC |
| Rough effective supply | About 15 to 16.8 million BTC |
These are estimates, and some analyses overlap Satoshi’s coins with lost coins. Still, they show that the supply available to buyers is noticeably smaller than the headline number.
Can the 21 Million Limit Ever Change?
In theory, the cap could be changed, because it is software. In practice, it is one of the most firmly protected rules in Bitcoin.
To change the supply limit, a new version of the software would need to be adopted by the large majority of people who run Bitcoin nodes, including exchanges, businesses and individual users. Each node checks the rules for itself, so any miner who tried to create extra coins would simply have their blocks rejected. Because the fixed supply is a core reason people value Bitcoin, there is very little support for changing it, and any attempt would most likely produce a separate coin rather than change Bitcoin itself.
How other cryptocurrencies compare
Bitcoin’s capped supply is not shared by every cryptocurrency. Some have a fixed cap, some have no cap, and some adjust their supply over time.
| Cryptocurrency | Supply model |
|---|---|
| Bitcoin (BTC) | Fixed cap of 21 million, issued on a halving schedule |
| Litecoin (LTC) | Fixed cap of 84 million, with a similar halving design |
| Ether (ETH) | No fixed cap; some fees are burned, so supply can rise or fall |
| Dogecoin (DOGE) | No cap; a fixed number of new coins each year |
| Stablecoins such as USDT and USDC | Supply grows and shrinks with demand, backed by reserves |
Why Bitcoin’s Limited Supply Matters
The fixed supply is one of the main reasons people describe Bitcoin as “digital gold.” Like gold, it cannot be printed at will, and new supply arrives at a slow, predictable rate. Unlike gold, the total amount is known in advance, and the schedule is public.
Scarcity and price
A limited supply does not guarantee that bitcoin will rise in value. Price depends on demand, and demand can fall sharply, as Bitcoin’s history of large drops shows. What the cap does mean is that higher demand cannot be met by creating more coins. Some investors see this as a strength; others see it as a reason for large price swings.
What it means if you are buying
For someone thinking of buying, the supply story has a few practical points:
- You can buy a small fraction of a bitcoin, so the high price of one whole coin is not a barrier.
- The pace of new supply is predictable, but price is not. Never buy more than you can afford to lose.
- Keep your recovery phrase safe. Lost coins are a major part of Bitcoin’s story, and you do not want yours to be among them.
- Be careful of products that promise to “multiply” your bitcoin. Scams often borrow the language of scarcity to create urgency.
Common Myths About Bitcoin Supply
Several misunderstandings come up often when people first learn how the supply works. Clearing them up makes the rest of the picture easier to follow.
“Once all bitcoin are mined, the network will stop”
The network does not need new coins to keep running. Miners will continue to process transactions in exchange for fees. The block reward is a way to distribute new coins and pay miners in the early decades, not a requirement for Bitcoin to work.
“Lost bitcoin can be recovered by someone eventually”
Without the private key, coins cannot be moved. The cryptography securing bitcoin is designed so that guessing a key is practically impossible. This is also why “recovery services” that promise to unlock lost coins without your recovery phrase are almost always scams.
“Bitcoin can be split forever”
Bitcoin can be divided down to one satoshi, which is 0.00000001 BTC. That is very small, but it is a real limit in the current system. Payment layers such as the Lightning Network can track even smaller amounts internally, but on the main blockchain a satoshi is the smallest unit.
“Exchanges and ETFs can create extra bitcoin”
They cannot. An exchange may show balances in its own accounts, but every real bitcoin must exist on the blockchain. Regulated funds are expected to hold actual bitcoin with a custodian. This is why proof of reserves and trustworthy custody matter when you choose where to buy.
How to Check Bitcoin’s Supply Yourself
You do not need to trust any single website for supply figures. Because the blockchain is public, the number of coins in existence can be checked directly.
- Use a block explorer. Public explorers show the current block height and the total coins issued. Compare two or three for consistency.
- Run a node. Anyone can run Bitcoin Core, the most widely used Bitcoin software, and check the supply against the rules independently.
- Do the math. Multiply the number of blocks in each halving period by that period’s reward, and you will arrive at the same figure.
Remember that data sites sometimes describe “circulating supply” differently. Some report all mined coins, while others try to subtract coins believed to be lost.
Frequently Asked Questions
These are the questions people ask most often about Bitcoin’s supply.
As of November 2026, about 20.1 million bitcoin have been mined. The number rises by about 450 coins a day until the next halving.
Fewer than 900,000 bitcoin are left to mine. They will be released slowly, with the final fraction expected around 2140.
Bitcoin’s creator set a starting reward of 50 BTC and a halving every 210,000 blocks. Those two rules together produce a total of just under 21 million.
Estimates range from about 2.3 million to 4 million BTC, based on studies by Chainalysis, River, Ledger and Unchained.
Analysts estimate Satoshi mined about 1 million to 1.1 million BTC in the early years. Those coins have never moved, and nobody knows whether they ever will.
The next halving is expected around 2028, at block 1,050,000, when the reward will fall from 3.125 BTC to 1.5625 BTC.
Only if the vast majority of the network agreed to change the rules, which is extremely unlikely. Any miner who tries to create extra coins would have their blocks rejected.
No. Bitcoin can be split into 100 million satoshis, so you can buy any amount, for example $20 worth.
No. Miners will be paid through transaction fees instead of new coins, and the network will continue to process payments.
Final Thoughts
So, how many bitcoin are there? About 20.1 million have been mined, the hard maximum is just under 21 million, and fewer than 900,000 remain, to be released slowly until around 2140. Once lost coins and Satoshi’s untouched holdings are taken into account, the supply that is realistically available is closer to 15 to 17 million.
That fixed, predictable supply is a big part of why Bitcoin attracts attention. It does not make the price predictable, so treat Bitcoin as a high-risk asset, buy only what you can afford to lose, and keep your recovery phrase safe so your coins never join the millions already lost.
Sources
Disclaimer: This article is for general information only and is not financial advice. Supply figures are estimates based on public data and research available in November 2026.
