Polygon Bridge moves supported assets between Ethereum and Polygon's main network. Choose Polygon Bridge when a direct transfer fits your token and timing; compare other routes by the amount received, total fees, and arrival time. Allow around 20–30 minutes into Polygon; a return often takes one to three hours before you can claim on Ethereum.
What is Polygon Bridge, and can I bridge ETH to Polygon?
It is a two-way bridge, and yes, you can move ETH from Ethereum to Polygon PoS. Polygon PoS is Polygon's main network. On deposit, Ethereum locks your asset and Polygon issues a matching token. On return, Polygon destroys that token and Ethereum releases the original.
ETH arrives on Polygon as WETH, a token representing ETH. WETH cannot pay Polygon's gas, or network fees. You need POL for later transactions. Polygon Portal may offer Refuel, which turns part of a transfer into POL.
The bridge also carries supported ERC-20 tokens, a common type of Ethereum token. Each needs a mapped counterpart, meaning a matching version on Polygon. Check the token selector and verify the token's contract address, its unique identifier on that network. For example, bridged Ethereum USDC becomes USDC.e, which differs from USDC issued directly on Polygon.
How do I bridge tokens to Polygon?
Connect your wallet to Polygon Portal. Select Ethereum as the source, Polygon PoS as the destination, then choose the token and amount. Before signing, check the receiving address, token, network, estimated arrival, and fees shown. Use a wallet you control on both networks.
Say you want to move 0.1 ETH. Keep extra ETH for the Ethereum network fee, then confirm the transfer. For an ERC-20 token, your wallet may request an approval first. That separate transaction permits the bridge to handle your tokens and also costs a fee.
Watch the transfer in the Portal's Transactions view. Once complete, check your Polygon wallet. If the balance is hidden, add the verified Polygon token contract to your wallet. Check the transfer status before trying again; an empty wallet display does not prove the deposit failed.
Fees change with network demand and the transactions required. Your wallet shows each live fee before you sign. For a $20 transfer with, say, $12 in total fees, I would wait or compare another quote. Those fees consume 60% of the amount moved.
What happens when I withdraw tokens from Polygon to Ethereum?
The bridge destroys the Polygon token first, then waits for a checkpoint. A checkpoint is a batch of Polygon transactions recorded on Ethereum. When the Portal shows Claim Tokens, switch your wallet to Ethereum and pay to claim. The original asset appears after that transaction confirms.
Keep POL for the Polygon withdrawal and ETH for the Ethereum claim, even when withdrawing your full token balance. Check the claim fee before starting. You cannot cancel a withdrawal once it begins, but you can make the claim later after its checkpoint arrives.
Allow roughly one to three hours for the checkpoint, with longer waits possible. Before withdrawing, confirm which token version the recipient accepts. USDC.e and native USDC on Polygon are different tokens, despite their similar names.
Check the token version, keep gas money on both networks, and count the Ethereum claim as part of the return trip.