Convert B to OP
Swap BUILDon (B) to Optimism (OP) at the best cross-chain rate. SwitchFi routes your B → OP exchange across the top DEXs and bridges and settles straight from your wallet — non-custodial, no account, no sign-up.
B to OP market data
| Metric | B | OP |
|---|---|---|
| Price | $0.126 | $0.09742 |
| Market cap | $125.95M | $222.88M |
| 24h volume | $3.29M | $75.92M |
| 24h change | -5.53% | +1.31% |
| 7d change | -5.30% | +1.90% |
| 24h high / low | $0.1326 / $0.1269 | $0.1005 / $0.09353 |
| All-time high | $0.7626 | $4.84 |
| Market cap rank | #230 | #164 |
What is the B to OP exchange rate?
At the current market price, 1 B ≈ 1.2929 OP, and 1 OP ≈ 0.77348334 B. The rate moves with the market; the exact amount you receive is quoted from live liquidity in your wallet before you sign.
BUILDon is the smaller side of this pair — Optimism's market capitalisation of $222.88M is roughly 1.8× larger than BUILDon's $125.95M. On the overall leaderboard they sit at #230 and #164 respectively. The last 24 hours put B at -5.53% against +1.31% for OP — the B/OP rate has moved in OP's favour. Zooming out to a week, B has moved -5.30% while OP has moved +1.90%. Daily turnover runs at $3.29M for B and $75.92M for OP, so routed swaps between the two settle at market rates without moving the price. Measured from record highs, B is down 83.5% and OP is down 98.0%.
B to OP converter & price calculator
Indicative, based on current market prices. Get a live quote in the swap.
B / OP 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 BUILDon and Optimism
BUILDon (B) ranks #230 by market capitalisation at $125.95M. Compared with its $0.7626 all-time peak, it currently trades 83.5% lower. Of a maximum supply of 1.00B B, 1.00B B (100%) is already in circulation. Recent performance reads -5.30% over 7 days and -23.60% over the past month for B. Around $3.29M of B changes hands every 24 hours.
Optimism (OP) is the #164 cryptocurrency by market cap, worth $222.88M in aggregate. The price sits 98.0% under the record high of $4.84. Of a maximum supply of 4.29B OP, 2.29B OP (53%) is already in circulation. OP has moved +1.90% week-on-week and +9.80% over 30 days. Its 24-hour trading volume is $75.92M.
How to convert B to OP
- 1 Enter the amount of B you want to convert — the swap widget on this page is prefilled with the B → OP 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 OP 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 OP
Convert any other cryptocurrency from B
B to OP FAQ
What is the B to OP exchange rate?
Right now 1 B ≈ 1.2929 OP (and 1 OP ≈ 0.77348334 B). Rates update continuously from live market data; the exact amount you receive is quoted in your wallet before you sign.
How to swap, exchange or convert B to OP on SwitchFi?
Enter the amount of B you want to pay, connect your wallet, review the quote and confirm. SwitchFi routes the swap across DEXs and bridges to the best B→OP path — non-custodial, straight from your wallet.
Is the B to OP 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 B to OP?
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 B for OP?
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.