TOTAL BITCOIN CIRCULATING SUPPLY
What is the Total Bitcoin Circulating Supply Chart?
The Total Bitcoins in Circulation chart tracks the cumulative number of bitcoins that have been mined and are actively part of the network. This metric reflects Bitcoin's programmed supply issuance, following its fixed cap of 21 million coins. Analyzing the growth in circulation helps traders and investors understand Bitcoin's scarcity dynamics, halvings, and long-term inflation rate.
How Bitcoin's supply schedule works
Bitcoin's circulating supply is one of the most fundamental and predictable quantities in all of finance. It is hard-capped at 21 million BTC and grows on a precisely defined schedule — new coins are issued with every block mined, but the issuance rate is halved every 210,000 blocks (approximately every 4 years). This halving mechanism, written into Bitcoin's protocol, is what makes its supply curve unique among monetary assets.
How much has been mined so far
As of 2024, approximately 19.7 million of the 21 million BTC have been mined. The remaining supply will be issued over the next 120+ years, with each halving cutting the per-block reward in half. The final satoshi will not be mined until approximately 2140. This fixed, transparent, and front-loaded supply schedule is what supporters point to as Bitcoin's core monetary property — unlike fiat currencies, no central authority can inflate the supply.
The problem of lost coins
Lost coins complicate the circulating supply picture. A meaningful portion of early Bitcoin — conservatively estimated at 1–2 million BTC — is presumed lost forever, locked in wallets whose private keys no longer exist. These coins count toward circulating supply in the official figures but are functionally removed from the market. The true liquid supply is likely lower than the headline number.
Supply and the halving cycle
The supply curve and halving history are critical context for understanding price history. Each of the three previous halvings — in 2012, 2016, and 2020 — preceded a major bull market within 12–18 months. The mechanism is straightforward: new issuance is cut in half, reducing sell pressure from miners at the same time that the narrative of scarcity often attracts new demand. The fourth halving occurred in April 2024.
Frequently Asked Questions
How many bitcoin will ever exist?
The protocol caps supply at 21 million. New coins enter circulation only as block rewards, and that reward halves roughly every four years, so issuance approaches the cap asymptotically. The final fraction of a coin is not expected to be mined until around 2140.
How many bitcoin are in circulation now?
Over 19.7 million have been mined, which is more than 94 percent of the total that will ever exist. The remaining supply will be issued slowly across the next century, with each halving cutting the rate again.
What happens when all bitcoin are mined?
Block rewards end and miners are compensated entirely by transaction fees. That transition is gradual rather than sudden, since the reward is already a small fraction of its original size and continues shrinking with each halving.
How many bitcoin are lost?
Estimates commonly put it between one and four million coins, lost to discarded drives, forgotten keys and early experimentation. The figure cannot be known precisely because a lost coin is indistinguishable on-chain from one held patiently, so all estimates rest on assumptions about dormancy.
Why does the supply schedule matter?
Because it is fixed and publicly verifiable, which is unusual in finance. Everyone knows exactly how many coins will exist and when they will arrive, so supply cannot respond to demand. Any adjustment has to come through price.