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Swap SUI on Sui to WETH on Ethereum

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What you need to know

Sui to Ethereum: object and account boundary

A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution. An Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract. Sui and Ethereum use different network identities, gas assets, wallet support, confirmation behavior, and destination conventions. Validate each side independently in the current route.

Sui coin-object and SUI gas requirements

SUI is the native gas asset for Sui. Sui hexadecimal account address with an object-based asset model Coin objects and Move types are not EVM token contracts.

SUI input versus WETH output representation

Native SUI is selected from Sui coin objects and can fund gas; tokenized SUI outside Sui does not use the object model. WETH arrives as a token contract balance. It may need an explicit unwrap before becoming native ETH and cannot itself pay transaction gas.

WETH wrapped-token output check

WETH is a contract wrapper for ETH. It can be transferred as a token but cannot replace the native gas balance required by the network. On this route WETH is the destination token on Ethereum. Its token balance, approvals, and contract transfer behavior are separate from the native coin used for network gas.

Mistakes specific to SUI Sui to WETH Ethereum

Route-specific mistakes include sending on a network other than Sui; using a destination that is not valid for Ethereum; running out of SUI before the source transaction is submitted; assuming other and evm addresses are interchangeable; treating a wrapped token as the native gas asset. A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution. Native SUI is selected from Sui coin objects and can fund gas; tokenized SUI outside Sui does not use the object model. An Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract. WETH arrives as a token contract balance. It may need an explicit unwrap before becoming native ETH and cannot itself pay transaction gas.

SUI input identity and handling

Sui is classified as a native asset for this route. SUI uses a native asset on Sui. The Sui side is contract-tracked rather than a native gas balance. Native SUI is selected from Sui coin objects and can fund gas; tokenized SUI outside Sui does not use the object model.

WETH output identity and receiving

WETH is classified as a wrapped asset for this route. WETH uses a wrapped contract asset on Ethereum. The recorded Ethereum representation uses 18 decimal places. WETH arrives as a token contract balance. It may need an explicit unwrap before becoming native ETH and cannot itself pay transaction gas.

Private Route for SUI → WETH

Sui account, object, transaction-effect, and fee activity remain public, and Ethereum wallet, token-transfer, contract, log, and gas activity remain public. For this SUI on Sui to WETH on Ethereum path, Private Route is intended to reduce the direct visible relationship between activity around the source-side Sui hexadecimal account address with an object-based asset model and destination-side EVM 0x account address; it does not hide either chain's public records.

  • ✓Reduces the obvious link between the SUI deposit and WETH receipt
  • ✓Compare standard and Private Route options for Sui → Ethereum
  • ✓Shows what remains public on Sui and Ethereum before you deposit
Check Private Route availability →

Related routes

No-KYC and verification rulesPrivate SUI to WETH route explainerPrivacy limits and live availabilitySwap WETH to SUIReverse routeSui (SUI)WETH (WETH)Sui networkEthereum networkBrowse supported swap routes

Swap SUI on Sui to WETH on Ethereum FAQs

How does the Sui coin-object side differ from the other network?

Sui uses Move coin types and objects with SUI gas. The other side follows EVM execution, so addresses and token identifiers are not interchangeable.

What exactly leaves Sui as SUI?

SUI is listed as the native representation on Sui; SUI is used for network gas. A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution. Native SUI is selected from Sui coin objects and can fund gas; tokenized SUI outside Sui does not use the object model.

What exactly arrives on Ethereum as WETH?

WETH is a contract representation on Ethereum with 18 decimals at 0xb1A7F8b3AdA1Cbd7752c1306725b07D2F8B4e726. ETH, not WETH, pays gas unless both symbols are the same. An Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract. WETH arrives as a token contract balance. It may need an explicit unwrap before becoming native ETH and cannot itself pay transaction gas.

Why does the SUI to WETH direction matter?

Native SUI is selected from Sui coin objects and can fund gas; tokenized SUI outside Sui does not use the object model. On receipt, WETH arrives as a token contract balance. It may need an explicit unwrap before becoming native ETH and cannot itself pay transaction gas.

What changes between the source and destination asset roles?

SUI is the deposited native-asset input; WETH is the quoted token output. Source allowance or native-spend rules and destination wallet/representation checks are evaluated separately.

What should be matched before sending SUI?

Native SUI is selected from Sui coin objects and can fund gas; tokenized SUI outside Sui does not use the object model. A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution. An Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract. WETH arrives as a token contract balance. It may need an explicit unwrap before becoming native ETH and cannot itself pay transaction gas.

Can the wrapped asset pay native network gas?

No. WETH arrives as a token contract balance. It may need an explicit unwrap before becoming native ETH and cannot itself pay transaction gas. A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution. An Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract.

Can I swap SUI on Sui to WETH on Ethereum without KYC?

Requirements are checked for the live SUI Sui to WETH Ethereum quote. Verification requirements can depend on the provider, amount, jurisdiction, and current route. Sasquatch does not verify this route as universally no-KYC; check the live flow before continuing.

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