Get ETH onto Arbitrum.
Coins here are priced in ETH, ARB or USDC, and ETH on Arbitrum is what you bring whichever one you trade. It pays for gas, which is cents rather than dollars here. Each coin settles in the token it bonds against, and the app wraps or swaps your ETH into it as part of the trade, so ETH alone covers every coin on the board.
Move funds in.
These routes all deliver to Arbitrum. Bring ETH: it pays the gas on every trade here, whatever the coin is priced in. Always read the quote before confirming.
Arbitrum Bridge
The official route from Ethereum. Deposits land in about ten minutes, withdrawals back to Ethereum take about a week. Slow on the way out, and the one that always works.
Coinbase
Supports withdrawing ETH directly to Arbitrum. The shortest path if your money is on an exchange or a card.
Across
Fast, competitive fees.
Relay
Bridge to Arbitrum with low fees.
Bridges and exchanges are third party services. arb.family does not operate them and cannot recover funds sent through them.
Point your wallet at Arbitrum.
MetaMask ships Arbitrum One as a built-in network, so there it is just a network switch. In another browser wallet, add it with one click below, or enter it by hand.