Swap
Swap any token with every route priced side by side. Pay the network fee in USDC on supported chains.
You sign, we never can
About swap
Routed across every DEX aggregator LI.FI can reach, which means the quote you get is the best of roughly a dozen rather than whatever one protocol's own liquidity offers. Two things here are deliberately different from most swap interfaces. The transaction is simulated against the live chain before the sign button does anything, so you see which tokens actually leave your wallet. And the approval is for exactly the amount of this trade rather than unlimited, so nothing is left standing behind you once it settles. Our fee is zero, on every route, venue, chain and token. On Base, Arbitrum, Optimism, Ethereum, Polygon, Avalanche and Unichain you can pay the network fee in USDC via Circle's on-chain Paymaster — a toggle, not a claim that gas is free; Circle adds a 10% surcharge on Base and Arbitrum and 0% on the other five.
Common questions
What is a crypto swap?
A swap trades one token directly for another without selling to cash first, and without an exchange taking custody in between. The trade is executed by a contract your wallet calls, so the tokens move from your address to the new ones in a single transaction.
How do I find the best swap rate?
By comparing routes, which is what this page does — it prices the trade across every aggregator and bridge LI.FI can reach and shows the losing quotes next to the winning one. A single-protocol interface structurally cannot do that, because it can only ever show you its own row.
Can I pay the network fee in USDC on a swap?
On same-chain swaps on Base, Arbitrum, Optimism, Ethereum, Polygon, Avalanche and Unichain, yes — turn on 'Pay network fee in USDC' and Circle's Paymaster covers the origin network fee in USDC. On other networks you still need the native coin for gas. The site fee is always 0; the network fee is never free. Base and Arbitrum include Circle's 10% surcharge on that fee; the other five supported chains are 0%.
What is slippage and what should I set it to?
Slippage is how far the price may move against you between signing and settling before the trade reverts instead of filling. A tighter setting protects the price and fails more often; a looser one fills more often and can fill worse. This page shows the minimum you would receive at whichever setting you pick, so the trade-off is a number rather than a guess.