Swap WETH on Sui to SUI on Sui

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What you need to know

WETH input identity and handling

WETH is classified as a wrapped asset for this route. WETH uses a wrapped contract asset on Sui. The recorded Sui representation uses 8 decimal places. WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer.

SUI output identity and receiving

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 receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

WETH unwrap or exchange input 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 source token on Sui. Its token balance, approvals, and contract transfer behavior are separate from the native coin used for network gas.

Sui source execution

Sui is a L1 Move VM network in the Sui ecosystem. SUI pays source-side network gas on Sui. Sui hexadecimal account address with an object-based asset model A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution.

Mistakes specific to WETH Sui to SUI Sui

Route-specific mistakes include sending on a network other than Sui; using a destination that is not valid for Sui; running out of SUI before the source transaction is submitted; 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. WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance. Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

Private Route for WETH → SUI

Sui account, object, transaction-effect, and fee activity remain public. For this WETH on Sui to SUI on Sui 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 Sui hexadecimal account address with an object-based asset model; it does not hide either chain's public records.

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

Related routes

Swap WETH on Sui to SUI on Sui 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 Move VM execution, so addresses and token identifiers are not interchangeable.

What exactly leaves Sui as WETH?

WETH is a contract representation on Sui with 8 decimals at 0xaf8cd5edc19c4512f4259f0bee101a40d41ebed738ade5874359610ef8eeced5::coin::COIN. SUI, not WETH, pays gas unless both symbols are the same. A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution. WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer.

What exactly arrives on Sui as SUI?

SUI is listed as the native representation on Sui; SUI is used for network gas. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance. Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

Why does the WETH to SUI direction matter?

WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer. On receipt, Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

What changes between the source and destination asset roles?

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

What should be matched before sending WETH?

WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer. A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance. Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

Can the wrapped asset pay native network gas?

No. WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer. A Sui source consumes or mutates Move coin objects, uses a Sui address, and spends SUI for gas and storage-related execution. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance.

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

Requirements are checked for the live WETH Sui to SUI Sui 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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