Convert ACXon Optimism to B
Swap Across Protocol (ACX) on Optimism to BUILDon (B) at the best cross-chain rate. SwitchFi routes your ACX → B exchange across the top DEXs and bridges and settles straight from your wallet — non-custodial, no account, no sign-up.
ACX to B market data
| Metric | ACX · Optimism | B |
|---|---|---|
| Price | $0.04013 | $0.1287 |
| Market cap | $28.25M | $128.61M |
| 24h volume | $1.13M | $3.78M |
| 24h change | -0.01% | -0.87% |
| 7d change | -0.40% | -6.40% |
| 24h high / low | $0.04196 / $0.03913 | $0.1309 / $0.1246 |
| All-time high | $1.69 | $0.7626 |
| Market cap rank | #661 | #227 |
What is the ACX to B exchange rate?
At the current market price, 1 ACX ≈ 0.31189519 B, and 1 B ≈ 3.2062 ACX. The rate moves with the market; the exact amount you receive is quoted from live liquidity in your wallet before you sign.
Across Protocol is the smaller side of this pair — BUILDon's market capitalisation of $128.61M is roughly 4.6× larger than Across Protocol's $28.25M. On the overall leaderboard they sit at #661 and #227 respectively. Over the past 24 hours ACX is -0.01% while B is -0.87%, so the ACX/B rate has moved in ACX's favour. Zooming out to a week, ACX has moved -0.40% while B has moved -6.40%. Liquidity is ample on both legs — ACX trades $1.13M a day and B trades $3.78M — so conversions execute at market rates. Measured from record highs, ACX is down 97.6% and B is down 83.1%.
ACX to B converter & price calculator
Indicative, based on current market prices. Get a live quote in the swap.
ACX / B conversion tables
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Indicative estimate — the exact amount is confirmed in your wallet at execution.
About Across Protocol and BUILDon
With a total market value of $28.25M, Across Protocol (ACX) sits at #661 among all cryptocurrencies. Compared with its $1.69 all-time peak, it currently trades 97.6% lower. 704.66M ACX is circulating out of a hard cap of 1.00B ACX — about 70% of the eventual supply. Recent performance reads -0.40% over 7 days and +5.90% over the past month for ACX. Around $1.13M of ACX changes hands every 24 hours.
BUILDon (B) ranks #227 by market capitalisation at $128.61M. 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 -6.40% over 7 days and -26.40% over the past month for B. Around $3.78M of B changes hands every 24 hours.
How to convert ACX to B
- 1 Enter the amount of ACX on Optimism you want to convert — the swap widget on this page is prefilled with the ACX → 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
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ACX to B FAQ
What is the ACX to B exchange rate?
Right now 1 ACX ≈ 0.31189519 B (and 1 B ≈ 3.2062 ACX). 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 ACX to B on SwitchFi?
Type in how much ACX you're converting, connect a wallet, check the quoted ACX→B route and confirm in the wallet. The router compares DEX and bridge paths and settles without ever taking custody.
Is the ACX to B swap instant?
Same-chain swaps settle in seconds; cross-chain routes typically take a few minutes while the bridge confirms on both sides. You can track live status until the funds land.
Are there fees to convert ACX to B?
SwitchFi shows the network, DEX and bridge fees up front in the quote. You always see the minimum you'll receive before confirming — there are no hidden custody fees because you never give up control of your funds.
Do I need an account to exchange ACX 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.