MetaMask is a non-custodial cryptocurrency wallet developed by Consensys that serves as the primary gateway to Ethereum and EVM-compatible blockchains. With over 30 million monthly active users and 143 million cumulative installs, it holds the largest market share among browser-based crypto wallets. Available as a browser extension for Chrome, Firefox, Brave, and Edge, as well as a mobile app for iOS and Android, MetaMask allows users to store, send, and receive tokens, interact with decentralized applications, and swap assets across multiple networks.
The wallet is open-source, with its code publicly available on GitHub, and functions as a self-custodial solution where users retain full control over their private keys. MetaMask does not store, transmit, or have access to user funds at any point. Since its launch in 2016, it has become the default wallet for DeFi protocols, NFT marketplaces, and Web3 applications across the broader Ethereum ecosystem.
For users earning cryptocurrency from microtask platforms, MetaMask provides a direct on-ramp to DeFi, token swaps, and staking. Platforms like FaucetWorld, which has operated for over seven years, can be connected to MetaMask for withdrawals, allowing earned tokens to be immediately deployed across decentralized finance protocols or swapped for other assets.
Key Features
EVM Chain Support and dApp Browser
MetaMask connects to over 850 networks, including all major EVM-compatible chains such as Ethereum, Polygon, BNB Chain (BSC), Arbitrum, Optimism, Avalanche, and Base. The built-in dApp browser enables direct interaction with decentralized applications without leaving the wallet interface. When a user visits a Web3-enabled site, MetaMask injects a window.ethereum object into the browser, allowing the site to request wallet connections, signatures, and transactions subject to user approval.
Token Swaps
MetaMask includes a native token swap aggregator that routes trades through multiple decentralized exchanges (DEXs) to find optimal pricing. Uniswap remains the largest swap venue, accounting for roughly half of all routed volume with over $17 billion in cumulative transactions. MetaMask charges a service fee of 0.875% on top of gas fees and DEX fees. The aggregator also factors in slippage, MEV protection, and price impact to reduce the total cost of each trade compared to executing directly on a single DEX.
Staking
MetaMask offers native Ethereum staking through its institutional-grade staking infrastructure, which received SEC regulatory clearance in 2026. Users can stake ETH directly from the wallet interface without managing validator hardware or meeting the 32 ETH minimum requirement. Staking rewards compound automatically, and Consensys operates the underlying validator infrastructure with institutional-grade uptime and slashing protection. This makes MetaMask one of the few self-custodial wallets offering fully integrated, regulated staking services.
Additional Features
- Fiat on-ramp integration with multiple payment providers for buying crypto directly within the wallet
- Perpetual futures trading on over 150 assets with up to 50x leverage through Hyperliquid integration
- Transaction simulation to preview outcomes before signing
- Security alerts for suspicious contract interactions and known phishing addresses
- Batch transactions and spending cap approvals for gas optimization
Setup Process
Browser Extension Installation
Installing MetaMask as a browser extension takes approximately two minutes. Navigate to the official MetaMask website or the Chrome Web Store, Firefox Add-ons, or Edge Add-ons marketplace. After installation, the setup wizard guides users through creating a new wallet or importing an existing one. During wallet creation, MetaMask generates a 12-word Secret Recovery Phrase (also called a seed phrase) that must be written down and stored offline. MetaMask explicitly warns users never to store this phrase digitally or share it with anyone.
Mobile App Setup
The MetaMask mobile app, available on both iOS and Android, includes an integrated dApp browser not available in the desktop extension. The setup process mirrors the browser extension: download from the App Store or Google Play, create or import a wallet, and secure the Secret Recovery Phrase. The mobile app also supports biometric authentication (fingerprint or Face ID) as an additional layer of device-level security. Users can sync their browser extension wallet with the mobile app using the same Secret Recovery Phrase.
Security Model
MetaMask operates on a self-custody model where private keys are generated locally on the user’s device and encrypted using the wallet password. These keys never leave the device and are never transmitted to Consensys servers. The Secret Recovery Phrase is the master key to the wallet; MetaMask cannot recover lost phrases, reverse transactions, or retrieve stolen funds.
What MetaMask Does Not Provide
MetaMask does not offer traditional two-factor authentication (2FA). There is no SMS verification, authenticator app integration, or account-level recovery mechanism. If a device is lost or stolen, the Secret Recovery Phrase is the only way to restore access to funds. This design is intentional: self-custody means the user alone bears responsibility for key management. Anyone seeking additional security layers should consider pairing MetaMask with a hardware wallet. Our Ledger wallet review and Trezor wallet review cover two of the most established hardware wallet options for this purpose.
Built-in Security Features
In 2026, MetaMask expanded its security stack with several protective features: transaction simulation previews outcomes before signing, security alerts flag known malicious contracts and phishing addresses, and contract checks evaluate the risk profile of interacting with unfamiliar smart contracts. MetaMask also offers an optional Transaction Shield program that provides coverage up to $10,000 per month for transactions deemed safe by the platform’s risk engine. Despite these measures, the primary attack vectors remain phishing attacks, malicious contract approvals, and social engineering. In January 2026 alone, signature phishing attacks surged 207%, draining $6.27 million from approximately 4,700 wallets.
Understanding these risks is critical. Our crypto scams checklist covers the most common attack vectors and how to avoid them when using any self-custodial wallet, including MetaMask.
Supported Networks
MetaMask supports over 850 networks, with new chains added regularly. The following table lists the most commonly used networks and their purposes:
| Network | Chain Type | Primary Use Case |
|---|---|---|
| Ethereum | Layer 1 | DeFi, NFTs, staking, ETH transactions |
| Polygon | Sidechain / L2 | Low-fee DeFi, payments, gaming |
| BNB Chain (BSC) | Layer 1 | DeFi, token launches, high-throughput apps |
| Arbitrum | Layer 2 | Scalable DeFi, perpetuals, gaming |
| Optimism | Layer 2 | DeFi, governance, public goods funding |
| Avalanche | Layer 1 | DeFi, subnet architecture, enterprise apps |
| Base | Layer 2 | Consumer apps, low-cost transactions |
| Linea | Layer 2 | ZK-rollup DeFi, Consensys-built |
By chain-level usage data, BNB Chain currently accounts for the largest share of MetaMask monthly active users, followed by Ethereum and Polygon. Users can add custom networks manually by entering the RPC URL, chain ID, and currency symbol, making MetaMask compatible with any EVM-compatible blockchain not included in the default list.
Fees and Token Swaps
MetaMask does not charge a fee for receiving tokens or storing assets. The costs users encounter fall into three categories:
- Gas fees: Network transaction fees paid to validators on the respective blockchain. Ethereum gas fees vary based on network congestion, typically ranging from $1 to $50 for standard transactions. Layer 2 networks like Polygon and Arbitrum offer gas fees under $0.01.
- Swap fees: MetaMask charges a 0.875% service fee on token swaps in addition to the DEX’s own fees and network gas costs. This fee covers aggregator routing, MEV protection, and slippage optimization.
- Fiat purchase fees: Third-party payment providers charge varying fees for buying crypto with fiat currency. These range from 1.5% to 5% depending on the provider, payment method, and region.
For users comparing swap costs across wallets, MetaMask’s 0.875% fee is competitive with other aggregated swap services. However, users who want to avoid the service fee entirely can connect MetaMask to a DEX like Uniswap or 1inch directly, paying only gas and DEX-level fees.
Limitations
While MetaMask is the dominant browser wallet for the EVM ecosystem, it has several limitations worth understanding before committing to it as a primary wallet:
Phishing Exposure
Because MetaMask is widely used, it is a high-value target for scammers. Fake browser extensions, phishing websites mimicking the MetaMask interface, and malicious token approvals are common attack vectors. MetaMask’s security alerts and transaction simulations mitigate some risk, but users must exercise caution when connecting to unfamiliar dApps or approving token spending. In January 2026, signature phishing attacks drained $6.27 million from MetaMask users, underscoring that no software feature replaces vigilance.
No Built-in Hardware Wallet
MetaMask operates as a hot wallet, meaning private keys are stored on an internet-connected device. While MetaMask can be connected to hardware wallets like Ledger and Trezor for cold storage security, it does not include native hardware wallet functionality. Users holding significant value should consider pairing MetaMask with a hardware wallet for an additional layer of protection.
Recovery Dependency
There is no account recovery mechanism beyond the Secret Recovery Phrase. If the phrase is lost, funds are permanently inaccessible. If the phrase is exposed, funds can be stolen immediately with no recourse. This is a fundamental trade-off of self-custody that applies to all non-custodial wallets, not just MetaMask.
Mobile App Limitations
The mobile dApp browser, while convenient, can be a vector for connecting to malicious sites. Unlike desktop browsers, which benefit from extensions like wallet address checkers and phishing detectors, the MetaMask mobile browser operates with fewer third-party security layers. Users should verify URLs carefully before connecting their wallet on mobile.
Frequently Asked Questions
Is MetaMask safe to use?
MetaMask is safe when used correctly. Private keys are encrypted and stored locally on your device, never transmitted to external servers. The wallet includes transaction simulation, security alerts, and contract risk checks. However, MetaMask does not offer traditional 2FA, so the security of your funds depends entirely on how well you protect your Secret Recovery Phrase and what dApps you choose to interact with.
Does MetaMask support Bitcoin?
MetaMask was originally designed for Ethereum and EVM-compatible chains. As of 2026, native Bitcoin support has been introduced alongside Solana. However, for users primarily holding Bitcoin, dedicated Bitcoin wallets still offer more feature-complete experiences for BTC-specific operations like UTXO management and Lightning Network transactions.
What are MetaMask swap fees?
MetaMask charges a 0.875% service fee on token swaps executed through its built-in aggregator. This is in addition to network gas fees and the underlying DEX fees. The aggregator routes trades through multiple venues including Uniswap, 1inch, and others to find the best available price. Users who want to avoid the 0.875% fee can interact with DEXs directly through their connected MetaMask wallet.
Can I use MetaMask with a hardware wallet?
Yes. MetaMask can be connected to Ledger and Trezor hardware wallets. When paired, transactions are signed on the hardware device’s secure element rather than on the computer or phone. This means even if MetaMask or the browser is compromised, the private keys remain protected on the hardware wallet. This setup combines MetaMask’s dApp connectivity with cold storage security and is recommended for users holding significant value.
MetaMask remains the most widely adopted self-custodial wallet for Ethereum and EVM-compatible networks. Its combination of open-source code, native dApp integration, token swap aggregation, and regulated staking services makes it a practical choice for both new and experienced crypto users. The key trade-off is the same as any self-custodial wallet: full control over funds comes with full responsibility for key management. Used with proper security practices—and ideally paired with a hardware wallet for larger holdings—MetaMask provides a reliable and feature-rich entry point into the Web3 ecosystem.