base → Mainnet

Swap ETH to OP

Exchange ETH from Base into OP on OP Mainnet. The provider waits for the ETH deposit before arranging the OP payout on the destination network. Track those as separate transactions rather than using a sending-chain confirmation as proof of receipt.

Ethereum (Base) to Optimism (Mainnet)

You send: Ethereum (Base)ETH · base
You receive: Optimism (Mainnet)OP · Mainnet

Enter your amount to check live availability for ETH on base → OP on Mainnet. A provider quote is required before you can create a swap.

Address and network checks

Both Base and OP Mainnet use EVM-style addresses. An identical address string cannot confirm the network. Check Base in the sending wallet and OP Mainnet in the receiving wallet separately.

Sending ETH

Switch the wallet to Base. ETH on Ethereum mainnet cannot pay the normal gas fee for a separate token transfer on Base. Native ETH and wrapped Ether (WETH) are different assets. Use the ETH balance on the selected network; do not substitute WETH for an ETH deposit.

For a standard self-custody transfer on Base, allow for network fees in ETH in addition to the amount you send. Wallet sponsorship and exchange withdrawal charges can differ; check the sending wallet’s final fee.

Receiving OP

Choose OP Mainnet using the Mainnet option shown in this directory. Follow the selected provider’s exact deposit instructions before sending. Send the OP token on the network specified by the order. If sending from a normal self-custody wallet on OP Mainnet, allow for gas paid in ETH, not OP. This listed OP/Mainnet option has no separate memo field. If your destination requires additional instructions that this form cannot supply, choose another compatible destination before creating an order.

Refund address for this pair

Enter a refund address that accepts ETH on base. The refund is sent in ETH on base; verify that your refund wallet supports this exact asset and network.

Swap the other direction: OP to ETH

CROSS-CHAIN EXCHANGE

Make your move

Wallet to wallet

Provider privacy rating

ⓘ

You sendbase

Min. 0.002131 · Max. 665.93446948Ethereum (Base)

You receiveMainnet

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Connecting to providers…Optimism (Mainnet)

Recipient address OP

Timing depends on the pair and provider ↗

INDEPENDENT EXCHANGE PROVIDERSConnecting…

SENDING ASSET

Ethereum on Base

Ether is used for transaction fees and staking on Ethereum. ETH is also available on several separate networks in this directory, so the network is part of the asset you select.

Read the ETH network guide →

RECEIVING ASSET

Optimism on OP Mainnet

OP is the governance token of the Optimism Collective. On OP Mainnet, the OP token balance is distinct from the ETH balance used for transaction fees.

Read the OP network guide →

About this ETH / OP route

Can I swap ETH on base to OP on Mainnet?

Both assets are listed in our coin directory. Enter your amount to request a live quote for this exact direction and network combination. A swap can proceed only when a provider returns a usable quote; liquidity, limits and rate types can change.

Which network fee applies when sending ETH?

What should I check before receiving OP on OP Mainnet?

Send the OP token on the network specified by the order. If sending from a normal self-custody wallet on OP Mainnet, allow for gas paid in ETH, not OP. This listed OP/Mainnet option has no separate memo field. If your destination requires additional instructions that this form cannot supply, choose another compatible destination before creating an order.

How much OP will I get for ETH?

Enter your ETH amount to see an approximate receive amount. Click Find the best route to compare providers. Floating rates can change before conversion; fixed quotes follow the selected provider’s terms.

Does a confirmed ETH deposit mean my OP has arrived?

No. Deposit confirmation on Base, provider processing and payout on OP Mainnet are separate steps. Use Track swap to see the order status, then check the OP balance on the receiving network. A live quote or historical route check does not guarantee completion time.