How much bitcoin is left to buy
The Bitcoin Float
Most of the 21M can no longer be bought. The falling number below is the · what's actually still up for grabs.
Every square · 10,000 BTC
All 21 million bitcoin that will ever exist, as 2,100 squares. The orange ones are still realistically buyable · 609 squares. Everything else is already spoken for.
11.4M BTC on the dark squares is lost, held, or in an institutional slice still syncing.
Governments, ETFs and public companies are syncing. Those squares are not counted as empty.
The orange squares are the entire liquid market: 6.1M BTC still realistically buyable. This is what every buyer on Earth is competing for.
Count the orange ones. That scarcity is the whole page in one picture · and it shrinks a little most days.
Where it all lives
21 million bitcoin, accounted for · tap a row for detail.
The Float Over Time
Bitcoin still up for grabs, yet to be mined or bought · halving events marked
The Halving Runway
Demand is already 6.0× the new supply. And it doubles on a known schedule.
Next halving in 565 days. Daily new supply drops from 450 BTC → 225 BTC. If today's absorption pace holds, the ratio doubles overnight.
*Holding demand constant is a thought experiment, not a forecast · see Methodology.
The clock above is counting down the 6.1M BTC still realistically in play. Where does your stack sit inside it?
Your 0.21 BTC is about 0.0000034% of the Bitcoin still in active play. Scarce company.
Conceptual only · your coins are not held in the "in play" bucket in any custodial sense, and this never leaves your browser.
Methodology & Sources
Hero number = mined − lost − governments − ETFs − public-company treasuries − long-term-holder remainder. The LTH cohort (Glassnode · coins not moved 155+ days) is overlap-adjusted before subtraction: we back out the lost / gov / ETF / treasury portions (which are themselves LTH-classified by definition) so MSTR's coins aren't double-counted. Public-company BTC counts named holders we independently know. The feed's public-company type still carries copied and impossible rows, so summing the survivors is not a cohort. Governments and ETFs withhold the whole type when an unfamiliar row is impossible. Rows already judged impossible are left out, and the rest of that cohort still publishes. The strictest "buyable on an exchange right now" framing (~exchange reserves) appears above the breakdown for context, not as the headline.
| Metric | Source | Last reviewed |
|---|---|---|
| Mined / circulating supply | mempool.space (block height) | live |
| Government holdings | bitcointreasuries.net | daily snapshot |
| Spot Bitcoin ETF AUM | bitcointreasuries.net (aggregate) | daily snapshot |
| Public-company treasuries | bitcointreasuries.net (named holders we independently know, not every public-company row in the feed) | daily snapshot |
| Provably lost (>7y dormant) | Glassnode (lth-supply-7y derived) | 2026-05-11 |
| Long-term holder baseline | Glassnode lth-supply | 2026-05-11 |
| Exchange reserves | CoinGlass /Balance | 2026-05-11 |
Last data refresh: Sat, 26 Sep 2026 00:15:12 GMT. Slow-moving cohorts (lost, LTH baseline, exchange reserves) are reviewed quarterly and updated in src/lib/float-snapshot.ts.
Data freshness · cite this page
Last updatedGalaxy Mind, "The Bitcoin Float," https://galaxymind.space/float, accessed September 26, 2026.
Tell someone how much bitcoin is actually left
Opens your share sheet (or X compose) with a pre-filled message. Recipients see a live preview card with today's float number. The snapshot auto-updates when the data moves.
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"It's going up forever, Laura."