Market cap calculator

Token price is meaningless in isolation — only market cap matters. This calculator answers the question crypto Twitter loves: 'what if DOGE hit BTC's market cap?' It's also the sanity check that kills most absurd price predictions in 10 seconds.

Enter circulating supply and a target market cap. Get the implied price. Use it to stress-test bullish narratives and separate realistic targets from moonboy fantasy.

The math is simple: implied price = target market cap ÷ circulating supply. What's hard is picking the right inputs. A token claiming to be 'the next Ethereum' needs to reach ETH's $300B cap to justify that label. At 500M circulating tokens, that's $600/token — does the project's product, user base, and fee revenue warrant a $600 price? Almost never. Running the numbers takes 30 seconds; the narrative always sounds better before you do.

Market cap comparisons also reveal sector concentration. DeFi's top 10 protocols have a combined market cap of roughly $15B — less than 1% of Bitcoin's cap. If DeFi 'goes mainstream' and captures 10% of crypto's total value, every major DeFi token quadruples from today's prices. That's how sector rotation math works: total addressable cap estimate divided by number of winners gives you rough price targets grounded in something other than hope.

Circulating supply vs fully diluted — pick one and be consistent

Circulating supply: tokens actually in the market now. Fully diluted valuation (FDV): total supply × price, including tokens not yet unlocked. High-FDV/low-circulating tokens (many 2021-2023 launches) look cheap on circulating cap but get crushed as unlocks dump. When comparing, use FDV for apples-to-apples on young tokens. For established tokens (BTC, ETH), the gap is small and either metric works.

Sector market cap ceilings as a reality check

Before asking 'what if this token 100x', ask 'what sector cap would that require?' Chainlink at $100 implies a $50B cap — roughly equal to every other oracle protocol combined times five. Possible during a bull market mania, but you'd need to articulate why LINK deserves all oracle value. Arbitrum at $20 implies a $25B cap for a single L2 — reasonable if Ethereum L2 TVL consolidates into one winner and that winner is Arbitrum.

Historical sector ceilings provide benchmarks. Gaming/GameFi peaked at roughly $25B combined in 2021. NFT infrastructure tokens peaked near $10B. DeFi blue chips (AAVE, UNI, MKR) collectively reached $30B. These numbers aren't limits — they're reference points. A sector doubling its all-time cap requires genuinely new users or capital entering, not just musical chairs between existing holders.

The 'flippening' question — when does ETH's market cap exceed BTC's — becomes concrete with this calculator. ETH would need to reach Bitcoin's cap at whatever BTC price that implies. At BTC = $1T market cap, ETH needs to go from $400B to $1T, meaning ETH price goes from ~$3,300 to ~$8,300. That's a 2.5x from a $3,300 base — not absurd on a cycle view, but the flippening would require ETH to gain relative ground while BTC also holds its value. Historically ETH underperforms BTC in bear markets and outperforms in bull peaks.

Token supply changes that break the calculation

Three supply mechanics throw off simple market cap math. First, inflation: Solana emits ~5% annually to validators, so 465M tokens today become 489M in 12 months. At the same market cap, SOL price is 5% lower than today's implied number. Second, burns: ETH's EIP-1559 has destroyed over 4M ETH since August 2021, reducing supply at ~0.5-1% annually depending on gas usage. That burn rate makes ETH's implied cap calculations more bullish than static supply math suggests.

Third, token unlocks from vesting schedules. Many L1/L2 competitors launched with 15-30% of supply in circulation and the rest locked to team, investors, and ecosystem funds. Aptos (APT) launched with 13% circulating in October 2022 — market cap at launch was based on 13% of supply but FDV was 7x higher. Investors who bought at launch circulating-cap parity with established chains paid FDV premiums they often didn't model. Always check the unlock schedule before using market cap as a comparable.

Comparing market caps across different asset types

Comparing a DeFi protocol to Bitcoin is like comparing a mid-cap software stock to gold. Bitcoin's cap reflects store-of-value demand, scarcity, and institutional adoption. A lending protocol's cap reflects revenue multiples, TVL, and governance rights. These don't compress to the same multiple. Aave at $2B cap generating $80M annually in protocol fees trades at 25x revenue. Bitcoin at $1.3T 'generates' zero revenue in the traditional sense — its value is monetary premium. Don't use BTC market cap as a target for DeFi tokens; they're priced by different markets.

NFT collections add another layer of confusion. A 10,000-piece collection with a 1 ETH floor has a '10,000 ETH market cap' — but that's floor price times supply, not realized cap. The realized cap of an NFT collection is the sum of what each piece actually sold for last. Bored Apes have a realized cap roughly 40% below their floor-implied cap because most pieces haven't traded since floor was lower. For fungible tokens, circulating market cap is a reasonable approximation; for NFTs, it overstates liquid value significantly.