Tunnel in 3 steps
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Choose how much ETH to send and paste the USD Coin address that should receive funds on ERC-20 on Ethereum.
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Open the order to freeze the quote and reveal a one-time deposit destination.
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Broadcast ETH to that destination. Once confirmations clear, USDC is pushed to your payout wallet.
Before you broadcast
- Base confirmations are usually fast — often within a minute.
- Send ETH on Base mainnet only — not Ethereum L1, Optimism, or Arbitrum unless your order says otherwise.
- Use a Base-compatible wallet and address (0x…). Leave enough ETH on Base for gas on top of the swap amount.
- Still waiting on USDC? Give the wallet a few minutes to sync, then share your Exchange ID with support if the order already lists a payout hash.
ETH on Base — Coinbase L2
Native ETH on Base — Ethereum's value on Coinbase's L2 with low fees, fast finality, and growing on-chain activity.
ETH on Base mainnet
Use a Base wallet for deposits. Ethereum mainnet ETH is a different network — wrong-chain sends may not be credited.
Leave enough ETH on Base for gas in addition to the amount you swap.
USD Coin — regulated dollar stablecoin
USDC on Ethereum mainnet is a widely trusted stablecoin for DeFi and transfers — always use ERC-20 on Ethereum unless stated otherwise.
USDC not credited?
Verify your wallet is on Ethereum mainnet and the token contract matches official USDC on Ethereum.
When will USDC arrive?
ERC-20 USDC payouts follow Ethereum block times — usually minutes after your deposit confirms.
- Confirm your wallet is set to Ethereum mainnet, not Polygon, Base, or another L2.
- Add the official USDC token contract in your wallet if the balance does not appear automatically.
- Check the payout tx hash on Etherscan if your wallet shows no incoming transfer.
Why traders swap into USDC
USDC is widely used in DeFi and on exchanges that prefer a regulated dollar stablecoin.
On Ethereum mainnet it pairs naturally with ETH gas and most ERC-20 trading pairs.
Before you swap
Avoid wrong-network deposits and address format mistakes — read these guides first.
Coin swap hubs
More no-KYC swap pairs and guides for each asset.
Frequently asked questions
Do I need KYC to swap ETH for USDC on TunnelSwap?
No. TunnelSwap is an anonymous no-KYC, privacy-first exchange. There is no account, no ID upload, and no standing balance for Ethereum (Base) → USD Coin swaps.
How fast is a ETH → USDC swap?
Most routes settle within minutes. Final timing follows Base mainnet deposit confirmations and ERC-20 on Ethereum payout speed.
Does TunnelSwap hold my ETH or USDC?
No. You fund the deposit from your wallet and USDC is sent straight to the address you paste — non-custodial, wallet to wallet.
What if I use the wrong network for ETH?
Only send on the network shown for the order (Base mainnet). Wrong-chain deposits can be unrecoverable — review the safety guides before you broadcast.