Exchange in 3 steps
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Choose how much OP to send and enter your Arbitrum address on Arbitrum One.
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Hit Exchange to open your order page with the live rate and deposit details.
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Transfer OP to the address on your order — after confirmations, ARB is sent to your wallet automatically.
What do you need to know?
- Optimism confirmations are usually fast — often within a minute.
- Send OP on Optimism mainnet only — not Ethereum, Base, or Arbitrum unless your order says otherwise.
- Use an Optimism-compatible wallet and address (0x…). Leave enough ETH on Optimism for gas if sending ERC-20 tokens.
- ARB not visible yet? Wait a few minutes, resync your wallet, then contact support with your order ID if the payout tx is already listed.
Optimism — Ethereum L2 with low fees
OP is the governance token of Optimism — an Ethereum rollup with fast, low-cost transfers and deep Superchain liquidity.
OP on Optimism mainnet
Use an Optimism wallet for deposits. L1 Ethereum or other L2 sends may not be credited.
Leave enough ETH on Optimism for gas when moving OP or other tokens.
Arbitrum — leading Ethereum rollup
ARB is the governance token of Arbitrum One — an optimistic rollup with EVM compatibility and wide DeFi adoption.
ARB not received?
Confirm your wallet is on Arbitrum One and fully synced.
ARB payout tips
- Payouts go to Arbitrum One — use a 0x-style address on the correct chain.
- Check Arbiscan with the payout tx hash if your balance has not updated.
- Do not expect ARB on Ethereum mainnet unless your order explicitly lists it.
Before you swap
Avoid wrong-network deposits and address format mistakes — read these guides first.
Coin swap hubs
More no-KYC swap pairs and guides for each asset.
Frequently asked questions
Do I need KYC to swap OP to ARB?
No. SendSwap is a non-custodial instant exchange — no account, no ID checks, and no KYC for Optimism to Arbitrum swaps.
How long does OP to ARB take?
Most swaps finish in 1–5 minutes. Timing depends on Optimism mainnet and Arbitrum One confirmations and current network load.
Is OP to ARB non-custodial?
Yes. You send OP from your wallet and receive ARB directly to the address you provide — SendSwap never holds your keys.
What if I send OP on the wrong network?
Always match the network on your order page (Optimism mainnet for deposits). Wrong-network sends may not be credited — read our swap safety guides before you send.