Moving stablecoins between chains usually means picking a bridge, hoping it’s safe, or going through a centralized exchange. There’s a cleaner option for $USDT from $TON to $Base.

STON.fi lets you do a cross-chain swap in one flow. You stay in control of your wallets the whole time, and you receive native USDT on Base instead of a wrapped version.

Here’s an instructional guide of how it works:

1.  Connect a TON wallet (Tonkeeper or similar) and an EVM wallet (MetaMask, Coinbase Wallet, etc.).

2.  Switch to the Cross-chain tab on STON.fi.

3.  Select USDT on TON as the asset you’re sending and USDT (or USDC) on Base as the asset you want to receive.

4.  Enter the amount, review the rate, fees, and minimum received.

5.  Confirm the transaction in your TON wallet.

6.  Wait for the swap to settle.

The funds arrive in your Base wallet.

The process uses Omniston under the hood. Both sides of the swap are locked in linked contracts, so either the full swap completes or your funds return. No separate bridge step and no wrapped token in the middle.

A few practical notes before you start:

•  Keep a small amount of TON in your wallet for fees.

•  Double-check the destination network and receiving address before confirming.

•  Start with a small test amount if it’s your first time.

You can see the full step-by-step on the official page:

https://ston.fi/how-to-send-usdt-from-ton-to-base

For a broader look at how cross-chain swaps from TON to Base work, this page covers the flow:

https://ston.fi/cross-chain-swap-from-ton-to-base

If you want a simple explanation of what a decentralized exchange is before trying any of this, the What is DEX resource is a clear starting point:

https://whatisdex.com/

That’s the easiest practical route.

One interface, native USDT on the other side, and no extra accounts required.