Convert K21 to B
Swap K21 (K21) to BUILDon (B) at the best cross-chain rate. SwitchFi routes your K21 → B exchange across the top DEXs and bridges and settles straight from your wallet — non-custodial, no account, no sign-up.
K21 to B market data
| Metric | K21 | B |
|---|---|---|
| Price | $0.01465 | $0.1304 |
| Market cap | $270,345 | $130.42M |
| 24h volume | $2 | $4.57M |
| 24h change | — | +0.14% |
| 7d change | -0.20% | -2.30% |
| 24h high / low | $0.01477 / $0.01419 | $0.1321 / $0.1246 |
| All-time high | $11.59 | $0.7626 |
| Market cap rank | #4229 | #227 |
What is the K21 to B exchange rate?
At the current market price, 1 K21 ≈ 0.11237516 B, and 1 B ≈ 8.8988 K21. 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 K21 is the junior asset: it is valued at $270,345 against BUILDon's $130.42M, a gap of about 482×. On the overall leaderboard they sit at #4229 and #227 respectively. Zooming out to a week, K21 has moved -0.20% while B has moved -2.30%. With $2 and $4.57M in respective daily volume, neither side of a K21→B swap struggles for depth. Measured from record highs, K21 is down 99.9% and B is down 82.9%.
K21 to B converter & price calculator
Indicative, based on current market prices. Get a live quote in the swap.
K21 / B conversion tables
Your payment wallet can't receive on — its address format differs.
Amounts include provider fees; ★ marks the best-value payment method. Checkout opens securely on the provider's site and is pre-filled with your connected wallet.
() on is not verified and may be a scam or an impostor of a well-known token. You could end up with a token you can't sell.
This browser has no crypto wallet. Pick your wallet app — SwitchFi will open inside its built-in browser, where you can connect.
The app didn't open — it may not be installed. You can still use SwitchFi from any wallet app:
- 1Open your wallet app (MetaMask, OKX, TokenPocket, TronLink…).
- 2Find the Browser / Discover / DApp tab.
- 3Paste this address and open it:
You have more than one wallet installed. Pick the one to connect.
Fetching live quote…
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 K21 and BUILDon
K21 (K21) is the #4229 cryptocurrency by market cap, worth $270,345 in aggregate. The price sits 99.9% under the record high of $11.59. Of a maximum supply of 21.00M K21, 18.45M K21 (88%) is already in circulation. K21 has moved -0.20% week-on-week and -2.90% over 30 days. Its 24-hour trading volume is $2.
BUILDon (B) ranks #227 by market capitalisation at $130.42M. Compared with its $0.7626 all-time peak, it currently trades 82.9% lower. Of a maximum supply of 1.00B B, 1.00B B (100%) is already in circulation. Recent performance reads -2.30% over 7 days and -23.50% over the past month for B. Around $4.57M of B changes hands every 24 hours.
How to convert K21 to B
- 1 Enter the amount of K21 you want to convert — the swap widget on this page is prefilled with the K21 → 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 K21
K21 to B FAQ
What is the K21 to B exchange rate?
1 K21 is worth roughly 0.11237516 B at the moment (inverted: 1 B ≈ 8.8988 K21). This moves with the market; your wallet shows the exact executable amount before signing.
How to swap, exchange or convert K21 to B on SwitchFi?
Enter the amount of K21 you want to pay, connect your wallet, review the quote and confirm. SwitchFi routes the swap across DEXs and bridges to the best K21→B path — non-custodial, straight from your wallet.
Is the K21 to B swap instant?
If both assets live on the same chain the swap confirms within seconds. Cross-chain conversions add a few minutes of bridge confirmation time, with live status tracking throughout.
Are there fees to convert K21 to B?
The usual on-chain costs apply (network gas plus DEX/bridge fees), but they're disclosed inside the quote together with the minimum received. Nothing is charged for accounts or custody.
Do I need an account to exchange K21 for B?
No. SwitchFi is a non-custodial router — connect a compatible wallet and swap. No sign-up, no KYC to use the on-chain swap.
Market data by CoinGecko, cached server-side. Prices are informational — the exact swap rate is quoted at execution time.