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Flow EVM Previewnet

Add Flow EVM Previewnet to Your Wallet — MetaMask, OKX, Rabby, Trust Wallet

Chain ID: 646·Symbol: FLOW

Flow EVM Previewnet is an EVM-compatible blockchain with Chain ID 646 and native token FLOW. This page lets you add Flow EVM Previewnet to MetaMask, Rabby Wallet, OKX Wallet or Trust Wallet in one click — no manual Chain ID or RPC entry required.

What is Flow EVM Previewnet?

Flow EVM Previewnet is an EVM (Ethereum Virtual Machine) compatible blockchain network. Any EVM wallet — MetaMask, Rabby, OKX Wallet, Trust Wallet, Coinbase Wallet — can connect and transact on Flow EVM Previewnet once you add the network configuration.

Why do you need to add Flow EVM Previewnet to your wallet?

MetaMask and most wallets only come pre-configured with Ethereum Mainnet. To transact, swap tokens, or use dApps on Flow EVM Previewnet, you need to add the network first. Entering an incorrect Chain ID or RPC can put your assets at risk. Use the "Add to wallet" button above — data sourced directly from chainid.network, the canonical Ethereum chain registry.

How to add Flow EVM Previewnet to your wallet

  1. 1

    Click Add to wallet

    Press the "Add to wallet" button above. MetaMask, OKX Wallet, Rabby Wallet or Trust Wallet will show a popup asking you to confirm adding the Flow EVM Previewnet network.

  2. 2

    Confirm in your wallet

    Your wallet shows the Flow EVM Previewnet network details: Chain ID 646, native token FLOW. Verify the Chain ID is correct, then click "Approve" or "Add Network".

  3. 3

    Switch to the new network

    After confirming, your wallet automatically switches to Flow EVM Previewnet. You can start transacting right away — you will need FLOW to pay gas fees.

Flow EVM Previewnet network technical details

To add manually, go to Settings → Networks → Add Network in MetaMask (or your wallet's equivalent) and enter the details below:

NameFlow EVM Previewnet
Chain ID646
Native tokenFLOW
Decimals18

Important notice

  • •Always verify Chain ID 646 before confirming — attackers sometimes create fake networks with similar names but different Chain IDs
  • •You need FLOW tokens in your wallet to pay gas fees for transactions on Flow EVM Previewnet
  • •Data on this page is sourced from chainid.network — the community-verified Ethereum chain registry
  • •If the "Add to wallet" button doesn't work, your wallet may not support wallet_addEthereumChain — add the network manually using the details below

Frequently asked questions

Is it safe to add Flow EVM Previewnet to MetaMask?▾
Yes, if you use the "Add to wallet" button on this page. Data is sourced from chainid.network — the community-audited Ethereum registry. Adding a network does not expose your private key or grant any permissions to the dApp.
What is Flow EVM Previewnet Chain ID?▾
The Chain ID of Flow EVM Previewnet is 646. This unique number identifies the network and prevents MetaMask and other EVM wallets from mixing up transactions across different chains.
Do I need FLOW tokens to use Flow EVM Previewnet?▾
Yes. Every transaction on Flow EVM Previewnet requires FLOW to pay gas fees. You can purchase FLOW on exchanges and bridge it to Flow EVM Previewnet, or use a faucet if this is a testnet.
What is the Flow EVM Previewnet RPC endpoint?▾
An RPC endpoint is the server address your wallet uses to communicate with the Flow EVM Previewnet blockchain — sending transactions, reading balances, and checking state. This page shows live latency for each RPC so you can pick the fastest one.
My wallet says Flow EVM Previewnet already exists when I click Add — what do I do?▾
That's completely normal. If Flow EVM Previewnet is already in your wallet, it will simply switch to that network instead of adding a duplicate — no error or conflict.
I added Flow EVM Previewnet but the network won't load — what's wrong?▾
The most common cause is a broken or overloaded RPC endpoint. Your wallet uses RPC to connect to the blockchain — if the RPC is down, the network won't load even if it was added correctly. Fix: copy a different RPC from the list above (prefer green low-latency ones), then go to Settings → Networks in your wallet and replace the old RPC with the new one. Watch the tutorial video above for step-by-step instructions on updating your RPC.