Convert OP to ARBon Ethereum
Swap Optimism (OP) to Arbitrum (ARB) on Ethereum at the best cross-chain rate. SwitchFi routes your OP → ARB exchange across the top DEXs and bridges and settles straight from your wallet — non-custodial, no account, no sign-up.
OP to ARB market data
| Metric | OP | ARB · Ethereum |
|---|---|---|
| Price | $0.09744 | $0.1134 |
| Market cap | $223.24M | $758.75M |
| 24h volume | $88.79M | $268.65M |
| 24h change | -3.60% | +3.20% |
| 7d change | -4.90% | +20.60% |
| 24h high / low | $0.1011 / $0.09318 | $0.1193 / $0.1048 |
| All-time high | $4.84 | $2.39 |
| Market cap rank | #162 | #85 |
What is the OP to ARB exchange rate?
At the current market price, 1 OP ≈ 0.85888316 ARB, and 1 ARB ≈ 1.1643 OP. The rate moves with the market; the exact amount you receive is quoted from live liquidity in your wallet before you sign.
Arbitrum carries the larger market value of the two — $758.75M versus $223.24M for Optimism. They currently rank #162 and #85 among all cryptocurrencies. Over the past 24 hours OP is -3.60% while ARB is +3.20%, so the OP/ARB rate has moved in ARB's favour. Across the last 7 days the comparison reads -4.90% for OP versus +20.60% for ARB. Daily turnover runs at $88.79M for OP and $268.65M for ARB, so routed swaps between the two settle at market rates without moving the price. Measured from record highs, OP is down 98.0% and ARB is down 95.3%.
OP to ARB converter & price calculator
Indicative, based on current market prices. Get a live quote in the swap.
OP / ARB 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 Optimism and Arbitrum
Optimism (OP) is the #162 cryptocurrency by market cap, worth $223.24M 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 -4.90% week-on-week and +12.20% over 30 days. Its 24-hour trading volume is $88.79M.
With a total market value of $758.75M, Arbitrum (ARB) sits at #85 among all cryptocurrencies. The price sits 95.3% under the record high of $2.39. Of a maximum supply of 10.00B ARB, 6.68B ARB (67%) is already in circulation. Recent performance reads +20.60% over 7 days and +36.70% over the past month for ARB. Daily turnover comes to $268.65M.
How to convert OP to ARB
- 1 Enter the amount of OP you want to convert — the swap widget on this page is prefilled with the OP → ARB 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 ARB on Ethereum 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.
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Convert any other cryptocurrency from OP
OP to ARB FAQ
What is the OP to ARB exchange rate?
At current prices one OP converts to about 0.85888316 ARB, and one ARB to about 1.1643 OP. The figure tracks the market in real time — the binding rate is the one quoted at execution.
How to swap, exchange or convert OP to ARB on SwitchFi?
Three steps: set the OP amount, connect your wallet, then approve the best quoted OP→ARB route. Funds move wallet-to-wallet — SwitchFi never holds them.
Is the OP to ARB 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 OP to ARB?
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 OP for ARB?
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.