Bitcoin Market Cap Calculator
Calculate Bitcoin (BTC) market cap from the live BTC price and circulating supply — plus FDV, and the price BTC would need to reach any target valuation.
Result
Enter values to see the result.
Using the Bitcoin Market Cap Calculator
Market cap is simply the live BTC price multiplied by the number of coins in circulation, and this page does that with the current price loaded for you. The supply field starts at roughly 20.06 million BTC, which is where it stood on 31 July 2026 — supply moves, so check it against a market data source if you need an exact figure, and edit the field.
Bitcoin's supply is bounded at 21 million BTC, so the fully diluted valuation is a real ceiling rather than an open-ended one. The MC/FDV row shows how much of that supply is already trading: the closer it is to 100%, the less future dilution is waiting for you, and for BTC that gap is currently 96%.
The comparison field answers the question people actually come here for: what would BTC be worth at some other valuation? Enter a target market cap and the calculator returns the implied BTC price and the multiple from here. It is arithmetic, not a forecast — reaching a larger cap means absorbing every holder willing to sell on the way, and bTC is the least volatile of the majors but still routinely moves 5–10% in a day and has drawn down more than 70% in past bear markets.
The BTC price behind each market cap
- Circulating supply
- 20M BTC
- Share issued
- 96%
- $10B cap →
- $498.5
- $100B cap →
- $4,985
BTC's circulating supply is about 20M (as of 31 Jul 2026), 96% of a 21M total. Market cap is only price × supply, so a target valuation pins one exact price — no guesswork.
A $1 billion cap would put BTC at $49.85, a $10 billion cap at $498.5, and a $100 billion cap at $4,985. On the fully diluted 21M supply those prices are lower, because 940K BTC is still to be issued — the FDV block above works that denominator in.
Figures are derived from BTC's own daily closes over the window shown and are bounded by it — not all-time values. Prices move; treat them as context, not a forecast.
Bitcoin at a glance
- Launched
- January 2009
- Consensus
- Proof-of-work (SHA-256)
- Max supply
- 21,000,000 BTC
- Block time
- ~10 minutes
- Issuance
- Halves every 210,000 blocks (~4 years)
- Native staking
- None — Bitcoin is mined, not staked
Frequently asked questions
- What is Bitcoin's market cap?
- Multiply the live BTC price by the circulating supply — around 20.06 million BTC as of 31 July 2026. The calculator above loads the current price and does this for you; the result updates the moment you change either field.
- How do I calculate the BTC price at a given market cap?
- Divide the target market cap by the circulating supply. The comparison field above does it directly and also shows the multiple against today's BTC price, which is usually the more sobering number.
- What is Bitcoin's fully diluted valuation?
- FDV prices all 21 million BTC at the current price, including coins not yet circulating. The difference between FDV and market cap is the supply still to enter the market — worth knowing before you treat market cap as the whole picture.
- How do you calculate crypto market cap?
- Market cap = current price × circulating supply. A coin at $2 with 500 million coins in circulation has a $1 billion market cap. Note that it is circulating supply, not total supply — tokens still locked in vesting contracts or a treasury are excluded.
- What is the difference between market cap and FDV?
- Market cap uses only the coins in circulation today. Fully diluted valuation (FDV) prices every coin that will ever exist, including locked and unminted supply. A project with a $200M market cap but a $2B FDV has 90% of its supply still to hit the market.
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For educational purposes only. Rates, fees and protocol parameters change — verify current figures with your exchange or validator before acting. Not financial advice.