To withdraw USDC to an external wallet on the mobile app, tap the three dots next to your Cash balance, select Withdraw, then Crypto wallet. On the web app, Withdraw in your cash balance menu opens it directly. Enter the amount and tap Continue.
Select the network the receiving wallet supports. The picker starts on Solana; the network button on the mobile app or the dropdown on the web app lists the networks available to you, out of Solana, Base, BNB Chain, Monad, Ethereum, Robinhood Chain and Arc. On every network except Robinhood Chain you withdraw USDC.
On Robinhood Chain you withdraw USDG. If you choose Arc, check first that the receiving wallet accepts USDC on Arc.
Paste the deposit address from your receiving wallet for that same network and asset. Never paste an address from a finance app such as Robinhood, PayPal, Venmo or Wealthsimple; those funds are lost.
Tap Review, then slide to confirm on the mobile app, or tick the warning and tap Confirm withdraw on the web app. The review screen shows the fee, which can be Free.
Every network has a minimum amount. If yours is under it, the app shows Amount too low with the minimum for that network, or Withdrawal failed on a very small Solana amount, and you can raise the amount and try again.
Make sure the network you select in fomo matches the network the receiving wallet expects. Sending to the wrong network or to an address you do not control can result in permanent loss of funds.