Convert 21M to B
Swap 21Million (21M) to BUILDon (B) at the best cross-chain rate. SwitchFi routes your 21M → B exchange across the top DEXs and bridges and settles straight from your wallet — non-custodial, no account, no sign-up.
21M to B market data
| Metric | 21M | B |
|---|---|---|
| Price | $0.02949 | $0.1288 |
| Market cap | $493,892 | $128.90M |
| 24h volume | $1,565 | $4.02M |
| 24h change | +0.60% | -2.12% |
| 7d change | +3.10% | -5.60% |
| 24h high / low | $0.02996 / $0.02919 | $0.1325 / $0.1263 |
| All-time high | $0.08529 | $0.7626 |
| Market cap rank | #3578 | #227 |
What is the 21M to B exchange rate?
At the current market price, 1 21M ≈ 0.22892453 B, and 1 B ≈ 4.3683 21M. The rate moves with the market; the exact amount you receive is quoted from live liquidity in your wallet before you sign.
In size terms 21Million is the junior asset: it is valued at $493,892 against BUILDon's $128.90M, a gap of about 261×. They currently rank #3578 and #227 among all cryptocurrencies. Over the past 24 hours 21M is +0.60% while B is -2.12%, so the 21M/B rate has moved in 21M's favour. On a 7-day view the tape shows 21M +3.10% and B -5.60%. With $1,565 and $4.02M in respective daily volume, neither side of a 21M→B swap struggles for depth. 21M currently trades 65.4% below its all-time high, while B sits 83.1% under its own peak.
21M to B converter & price calculator
Indicative, based on current market prices. Get a live quote in the swap.
21M / B conversion tables
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Live quote, net of DEX/bridge/gas fees. The final amount is confirmed in your wallet at execution.
Indicative estimate — the exact amount is confirmed in your wallet at execution.
About 21Million and BUILDon
21Million (21M) ranks #3578 by market capitalisation at $493,892. Compared with its $0.08529 all-time peak, it currently trades 65.4% lower. Supply-wise, 80% of the 21.00M 21M maximum (16.78M 21M) is on the market today. Recent performance reads +3.10% over 7 days and +12.90% over the past month for 21M. Its 24-hour trading volume is $1,565.
BUILDon (B) ranks #227 by market capitalisation at $128.90M. Compared with its $0.7626 all-time peak, it currently trades 83.1% lower. Of a maximum supply of 1.00B B, 1.00B B (100%) is already in circulation. Recent performance reads -5.60% over 7 days and -27.30% over the past month for B. Around $4.02M of B changes hands every 24 hours.
How to convert 21M to B
- 1 Enter the amount of 21M you want to convert — the swap widget on this page is prefilled with the 21M → B pair.
- 2 Connect a compatible wallet: MetaMask, OKX, Trust Wallet, TokenPocket, TronLink, UniSat, Phantom and others.
- 3 Review the quoted route — the estimated and minimum amount of B you will receive, plus network, DEX and bridge fees, are all shown before you sign.
- 4 Confirm the transaction in your wallet and track the swap on the My transactions page until the funds arrive.
Other options to exchange B
Convert any other cryptocurrency from 21M
21M to B FAQ
What is the 21M to B exchange rate?
1 21M is worth roughly 0.22892453 B at the moment (inverted: 1 B ≈ 4.3683 21M). This moves with the market; your wallet shows the exact executable amount before signing.
How to swap, exchange or convert 21M to B on SwitchFi?
Type in how much 21M you're converting, connect a wallet, check the quoted 21M→B route and confirm in the wallet. The router compares DEX and bridge paths and settles without ever taking custody.
Is the 21M to B swap instant?
Speed depends on the route: same-chain trades are near-instant, while bridged cross-chain paths usually complete in a few minutes. Progress is trackable the whole way.
Are there fees to convert 21M to B?
All costs — gas, DEX fees and any bridge fee — are included in the quote before you sign, along with the guaranteed minimum you'll receive. There are no account or custody charges.
Do I need an account to exchange 21M for B?
No account is needed. You connect a wallet, approve the swap and receive the funds directly — there is no registration or KYC step for on-chain swaps.
Market data by CoinGecko, cached server-side. Prices are informational — the exact swap rate is quoted at execution time.