MetaMask is a no-cost, non-custodial cryptocurrency wallet for desktop browsers and smartphones. It runs as a browser extension on Chrome, Firefox, Edge, and Brave, and as a mobile application for Android and iOS. Popular with Ethereum users, it supports ERC-20 tokens and other EVM chains. Being non-custodial, it grants full control of private keys without identity checks.
Beyond basic storage and transfers, MetaMask functions as a complete Web3 wallet. You can explore DeFi protocols, trade tokens, buy and sell NFTs, and interact with blockchain games from a browser or phone. Its open-source codebase and frequent updates strengthen security, helping it remain a trusted decentralized option. As a hot wallet connected to the internet, it carries inherent risks and users should remain vigilant against phishing and browser-based threats.
MetaMask supports Ethereum and many EVM-compatible networks, including Polygon, Arbitrum, Optimism, and more. Non-EVM chains like Bitcoin and Solana are not supported natively; access is typically via wrapped assets on EVM networks. The wallet is free to install and use; standard network gas fees apply, and in-wallet swaps include a 0.875% service charge; on-ramp fees from third-party providers vary by region.
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