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Arbitrum Sepolia

RPC Endpoints

Chain ID: 0x66eee · ETH

Other Arbitrum networks:Blueberry TestnetNovaMainnet
How to add Arbitrum to MetaMask or other wallets

Arbitrum Sepolia uses ETH as its native currency. Chain ID: 421614 (0x66eee). Below are 3 public RPC endpoints you can use to connect wallets, dApps, and developer tools to Arbitrum Sepolia.

StatusRPC EndpointChain IDCurrencyExplorerWallet
Checking
https://arbitrum-sepolia.drpc.org
0x66eeeETHExplorer
Checking
https://sepolia-rollup.arbitrum.io/rpc
0x66eeeETHExplorer
Checking
https://arbitrum-one-sepolia.gateway.tatum.io
0x66eeeETHExplorer

Connect to Arbitrum Sepolia with ethers.js

import { ethers } from "ethers";

const provider = new ethers.JsonRpcProvider("https://arbitrum-sepolia.drpc.org");

const network = await provider.getNetwork();
console.log(network.chainId); // 421614n

Arbitrum Sepolia — common questions

What is the RPC URL for Arbitrum Sepolia?
There are 3 public RPC endpoints for Arbitrum Sepolia, including https://arbitrum-sepolia.drpc.org. See the full list in the table above.
What is the Chain ID for Arbitrum Sepolia?
The Chain ID for Arbitrum Sepolia is 421614 (0x66eee in hexadecimal).
What is the native currency of Arbitrum Sepolia?
The native currency of Arbitrum Sepolia is ETH.
How do I add Arbitrum Sepolia to MetaMask?
Use the "Add to Wallet" button on this page to add Arbitrum Sepolia to MetaMask automatically, or follow our step-by-step guide for Arbitrum.