Swap Sui (SUI)

The numbers below were checked on 14 October 2026 against docs.sui.io.

Objects, not accounts

Sui's basic unit of storage is an object. Your SUI is not a number in an account; it is one or more Coin objects owned by your address, and a transfer either moves a coin object to the receiver or splits one and moves the piece. Wallets do the splitting and merging for you, and a receiver sees a balance like anywhere else. The reason it matters to a sender: two transactions that touch unrelated objects do not have to wait for each other, which is why a plain SUI transfer is settled quickly even when the network is busy with something else.

Smart contracts are written in Move. For a transfer that is background; for anyone receiving a token other than SUI on Sui it is the reason coin types are written as long Move type names.

Checkpoints and what the site waits for

Sui does not have blocks in the Bitcoin sense. Validators run delegated proof of stake — SUI holders delegate to validators, who lock stake for an epoch of 24 hours — and after execution the network produces checkpoints: a certified record of chain history, each linked to the previous one by hash, listing the transactions it covers with their effects. Checkpoints are signed by the aggregated BLS signatures of a quorum of the committee, and full nodes consume them to stay in sync. A transaction in a checkpoint is final.

The route data this site is built from waits for 10 checkpoints on a SUI deposit. Checkpoints come continually — the site's timing data counts half a second per checkpoint — so the 2–5 minutes the status page shows is mostly processing and the payout on the other network.

Gas, in four sentences

The gas-in-Sui page gives the formula: total gas fees are computation units times the reference gas price plus storage units times the storage price, and the net fee subtracts the storage rebate. The reference gas price is set once per epoch from validators' reservation prices, so a fee is stable in SUI terms for a day at a time. Computation is bucketed — the smallest bucket is 1,000 units, and similar transactions cost the same — and storage is charged per byte written, with a rebate when an object is deleted that is initially 99 % of the storage fee paid. The sender sets a gas budget; the minimum is 2,000 MIST, and the transaction succeeds only if the budget covers the larger of the computation fee and the total fee.

What that means for a deposit

Keep a little SUI in the wallet beyond the amount you send. The deposit transaction pays its own gas from a coin object you own, and a wallet that is asked to send its entire balance has nothing left to pay with. The amount is small — a transfer is in the lowest computation bucket — but it cannot be zero.

Sending everything is the one Sui-specific way to fail. Nothing lands on the wrong chain and nothing is slow; the transaction simply does not execute because no coin was left to pay gas. Leave some SUI behind, and the deposit goes through on the first try.

A Sui address is a 32-byte identifier written as 0x followed by 64 hexadecimal characters — 66 characters in all. It is derived by hashing a one-byte scheme flag followed by the public key, and the three signature schemes Sui supports for ordinary wallets (Ed25519, ECDSA secp256k1, ECDSA secp256r1) all produce the same 66-character form. Checked against the keys-and-addresses page of docs.sui.io on 14 October 2026.

Why the length is the check

Sui and the EVM chains share the 0x prefix and the hexadecimal alphabet, so the length is the only visible difference, and the form uses it: a 42-character 0x string is refused for a SUI payout, a 66-character one is accepted. There is no checksum in a Sui address — the hexadecimal digits are the hash itself — so a single mistyped character produces another valid-looking address that nobody controls. Paste, never retype, and compare the first and last six characters with the source.

Case does not matter: the hexadecimal digits a–f may be written in either case, and wallets show lowercase. Some tools strip leading zeros from an address, which produces a string shorter than 66 characters; the form expects the full length, so take the address from the wallet's receive screen rather than from a shortened display.

What the form accepts

For a SUI payout, a 66-character 0x address on the Sui main network. A payout to a fresh address works: Sui needs no account to exist in advance, and the receiver pays nothing to receive. There is no memo or tag anywhere in the protocol, and the form shows no field for one.

Which address to give

1. Your own wallet: the address from its receive screen. Every Sui wallet shows the full 66-character form there.
2. An exchange: the address from its SUI deposit page, exactly as shown, after checking the network named is Sui — not a token called SUI on another chain.
3. Another person: ask for the address and read the first and last six characters back; with no checksum, that check is the only one there is.

The sending side is the mirror: the deposit address the form shows is a 66-character Sui address, and a withdrawal from an exchange must be on the Sui network to reach it.

A Sui transaction is identified by its digest — a Base58 string, not a 0x hash — and the status page links the SUI side of a swap to Suiscan, which was read on 14 October 2026. Anyone with the digest can look the transaction up.

Suiscan opens a transaction with its status (success or failure), the checkpoint it was included in, the time, the sender, the gas fee with its computation, storage and rebate parts, and the balance changes: which address lost how much SUI and which gained. For a plain transfer the balance-changes section is the one to read — it shows the receiving address with the amount that arrived, separately from the gas the sender paid. The object-changes section lists the coin objects that were created, mutated or deleted, which is more detail than a swap needs. An address page shows the SUI balance, the coins and objects held, and every transaction sent or received.

A deposit you sent

1. Copy the digest from your wallet's activity list.
2. Open it on Suiscan. Not found means the wallet did not execute it; the usual cause is a gas budget the balance could not cover.
3. Check the balance changes: the deposit address from the form, with the exact amount.
4. Watch the checkpoint count. The status page updates on its own up to 10.

A transaction that shows as failed moved no SUI except the gas. The status page keeps waiting in that case, because nothing arrived; send again with gas left in the wallet.

A payout you received

1. Open the digest from the status page on Suiscan.
2. Find your address in the balance changes. The amount is "You get" from the form; the payout network fee was already taken out.
3. Open your address page and read the balance. A wallet shows it as soon as the transaction executes; an exchange credits after its own count of checkpoints.
4. Keep the digest. It is the one thing support on either side will ask for.

If an exchange says the deposit is missing

Open the payout digest, confirm that the receiving address in the balance changes is the one from the exchange's deposit page and that the status is success. Then the SUI is at the exchange, and crediting it is the exchange's task; give its support the digest. If the address differs, the address in the form was wrong, and the explorer shows where the coins went.

What a block explorer shows about a swap does the same for other networks; Reading a swap status page explains each stage.

Sui's address length keeps EVM addresses out, and its speed keeps waiting short. What goes wrong is gas, the wrong network at an exchange, and the absence of a checksum.

No checksum

Bitcoin, Litecoin, Dogecoin and Dash addresses carry a checksum, and a typo is caught before anything is sent. A Sui address does not: it is the raw hash, and every 64-character hexadecimal string is a syntactically valid address. The form can check the length and the alphabet, nothing more. This puts the whole weight on copying correctly — paste from the source, never from a chat message that may have been retyped, and compare the ends. A test with a small amount is cheap on Sui and worth it for a destination you have not paid before.

Gas and the empty wallet

The sender's wallet pays gas from a coin object it owns. If every MIST is in the amount being sent, there is nothing to pay with, and the wallet either refuses to build the transaction or builds one that fails. The fix is to keep a small reserve. The reverse case is harmless: a payout to a wallet with zero SUI works, because receiving is free, and the SUI that arrives is what pays for the next transaction out.

Less arrives than the form expects

Most exchanges deduct their withdrawal fee from the amount you type; the swap runs on what arrived, and if the shortfall takes the deposit under the route's minimum, it cannot be processed as a swap at all. The withdrawal screen shows the amount the exchange will actually send. Minimums, maximums and fees on small swaps explains the minimum; on the SUI to SOL route it is small, because both payout networks are cheap.

Nothing here is reversible. A transaction in a signed checkpoint is final, and a transfer to a mistyped address can only be returned by whoever controls that address — which for a random hexadecimal string is nobody.

Sui is young and its protocol is upgraded on a schedule, mostly in ways a sender never sees. Three things with dates matter to someone sending or receiving SUI; sources are docs.sui.io and blog.sui.io, read on 14 October 2026.

Mainnet, May 2023. Sui's 2023 recap places the public launch on 3 May 2023, with more than 100 validators and over 400 nodes behind it. The address format, the MIST unit and the object model were in place at launch, which is why a wallet created that month works unchanged today.

Supply. The tokenomics page caps total supply at 10 billion SUI and says plainly that there is a finite supply, with availability following designed unlocking schedules. It notes a one-year cliff after the initial mainnet mint that ended in May 2024. These are facts about who can sell when, not about how a transfer works; they are here because the question comes up.

The gas model. The documented model has been stable in shape: a reference gas price that validators set at each epoch boundary, computation units snapped to buckets so that similar transactions cost the same, storage charged per byte with a rebate — initially 99 % of the storage fee — when data is deleted, and a gas budget the sender sets with a floor of 2,000 MIST. The storage fund, which the tokenomics page calls a cache of SUI that never fully depletes, pays validators for keeping data; the rebate is where a user gets most of the storage fee back. For a plain transfer the practical content is one line: the wallet's proposed budget is enough, and the fee is stable in SUI for a day at a time.

What has not changed. The 66-character address, 9 decimals, no memo, free receiving, gas paid by the sender in SUI. The 10 checkpoints this site waits for were seconds in 2023 and are seconds now.

Sui and Solana are the two fast, cheap, proof-of-stake chains on this site that are not EVMs, and the one route page SUI has runs between them. For a transfer they feel alike — seconds to finality, small fees, no memo — and differ in the address, the unit of storage and what an empty wallet needs. Sources: docs.sui.io, the fees page of the Solana documentation at solana.com and the Solana page on this site, 14 October 2026.

Addresses. The two formats cannot be confused with each other: a Sui address starts with 0x and is hexadecimal, a Solana address is Base58 with no prefix and never contains 0, O, I or l. Each can be confused with something else — Sui with an EVM address (the length separates them), Solana with any other Base58 string. Neither carries a checksum, so on both chains the rule is paste and compare the ends.

Time. Both are in the fastest group here. Sui waits for 10 checkpoints and Solana for 1 confirmation, and in both cases the 2–5 minutes is processing and the payout rather than the chain.

Fees. Both are small. Sui's is predictable for a day because the reference gas price is set per epoch; Solana's base fee is 5,000 lamports per signature (solana.com documentation, 14 October 2026), with a priority fee the sender may add. On both, the sender needs a little of the native coin left to pay, and the receiver needs nothing.

Routes. SUI to SOL is the one route page on either side that pairs them: a balance on one fast chain into a balance on the other, often chosen by people who hold assets on both. SOL to USDT: choosing the network is the next read for someone who wants dollars rather than SOL.