Swap USDT on Optimism
Tether USD·
Optimism
Pay ETH on Optimism and receive Tether USD (USDT) on Optimism.
Keep ETH on Optimism for gas. Enter an amount to compare quotes, then connect your wallet to review and sign.
Price source: DefiLlama · retrieved Sep 29, 2026, 10:57 UTC. Cached reference price; request a quote for your amount.
Swap
Selected tokens and networks
ETH on Optimism to USDT on Optimism
Both tokens in this selection are on Optimism (chain ID 10). It does not require a transfer to another network. Changing a token or network in the swap box changes the route.
You pay
Ether (ETH)
Optimism · 18 decimals
Native ETH; no token contract.
You receive
Tether USD (USDT)
Optimism · 6 decimals
Token contract on Optimism0x94b008aa00579c1307b0ef2c499ad98a8ce58e58- Gas and approvals
- Keep ETH on Optimism for network fees. ETH is the native asset here, so spending it does not need an ERC-20 approval. Leave some behind for gas.
- Compare an executable quote
- Disconnected previews request current provider quotes but cannot be signed. Reference-price tables are separate from those quotes. Connect your wallet to get transaction details for your address. Review the provider, fees, recipient and minimum received for your amount before signing.
How to review a swap · Swap and bridge risks · How routes and fees are compared
How to swap USDT on Optimism
This preset buys Tether USD (USDT) with ETH on Optimism. Enter the amount you want to spend and compare returned quotes from 0x and Relay. Routes are ranked by expected token output after route fees; network gas is shown separately.
USDT is selected by its contract address on Optimism. Changing the input token or network requests a different route, subject to provider liquidity. Selling an ERC-20 token may require an approval; keep ETH for that transaction and the swap.
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USDCFAQ
Swapping USDT — FAQ
How do I swap USDT on Optimism?
Connect a wallet, keep USDT as the token you want, enter an amount, and review the best route. SwapRoute compares live quotes from 0x and Relay and shows route details and the minimum received before you sign — no account needed.
What's the best rate to swap USDT?
SwapRoute doesn't rely on a single venue. It queries every capable provider at once and ranks routes by the net amount you'd actually receive, so the best available USDT rate is shown first. Rates move with the market, so the quote refreshes as you type.
Which tokens can I swap for USDT?
The widget opens with ETH as the other asset on Optimism. Choose another supported token or network to compare available routes. Availability depends on the token, amount and provider; keeping ETH for gas is still necessary.
Is USDT available on other chains?
The catalog contains tokens using the USDT symbol on 10 networks. Matching symbols do not establish equivalent assets: check the contract and issuer on each network. This page selects USDT on Optimism. Quote availability depends on the provider and amount.
Does SwapRoute hold my USDT?
No. SwapRoute is a non-custodial routing interface. You connect your own wallet, review the transaction, and sign directly — your USDT never touches our servers and we never hold your keys.