Uniswap is the most well-known decentralized exchange (DEX) on Ethereum, with cumulative trading volume exceeding one trillion dollars. Unlike centralized exchanges, Uniswap requires no account registration — just connect your wallet to trade. If you don't have a centralized exchange account for on-ramping, you can first buy ETH for gas on Binance, then transfer it to your wallet to use Uniswap.
How Does Uniswap Work?
Uniswap uses an Automated Market Maker (AMM) mechanism rather than an order book. Liquidity providers deposit token pairs into pools, and users trade directly with these pools. Prices are calculated automatically using the constant product formula (x * y = k).
Currently at V4, Uniswap supports Ethereum mainnet, Polygon, Arbitrum, Optimism, Base, and more. V3 introduced concentrated liquidity, dramatically improving capital efficiency.
What Do You Need Before Using Uniswap?
- A crypto wallet: MetaMask, Rabby, or Coinbase Wallet recommended
- ETH or native tokens: For gas fees (at least 0.01 ETH on mainnet)
- Tokens to trade: Source tokens already in your wallet
- Stable internet connection
You can also use the Binance App (iOS users refer to iOS guide) for convenient access.
Step-by-Step Token Swap on Uniswap
Step 1: Visit app.uniswap.org
Verify the domain to avoid phishing sites. Click "Connect Wallet" in the top right.
Step 2: Connect wallet
Select your wallet type. Confirm the connection in MetaMask.
Step 3: Select trading pair
Choose the token to sell (From) and the token to buy (To). Enter the amount.
Step 4: Review parameters
- Exchange rate
- Slippage tolerance (default 0.5%)
- Estimated gas fee
- Minimum received amount
Step 5: Execute
Click "Swap". For first-time tokens, complete an Approve transaction first. Confirm in your wallet.
How to Add Liquidity
- Click "Pool" in the navigation
- Click "New Position"
- Select your token pair (e.g., ETH/USDC)
- Choose fee tier (0.01%, 0.05%, 0.3%, or 1%)
- Set price range (V3 concentrated liquidity)
- Enter amounts
- Confirm and sign
Note: Providing liquidity carries impermanent loss risk.
Fees on Uniswap
- Trading fee: 0.01%-1% per swap, depending on the pool
- Gas fee: Paid to network validators, varies with congestion
- Approval fee: One-time per token
On Ethereum mainnet, a swap may cost $5-$50 in gas. Layer 2 networks like Arbitrum or Base are much cheaper.
Security Tips
- Verify contract addresses: Check on Etherscan or CoinGecko before trading new tokens
- Manage approvals: Use Revoke.cash to check and revoke token approvals
- Beware of phishing: Only access Uniswap via bookmarks
- Start small: Test with small amounts for new tokens
- Watch slippage: High slippage settings attract sandwich attacks; use Uniswap's MEV protection
- Protect your keys: Anyone asking for your seed phrase is a scammer
What networks does Uniswap support?
Ethereum, Polygon, Arbitrum, Optimism, Base, BNB Chain, Avalanche, Celo, Blast, and more.
What if my transaction fails?
Usually due to low slippage, insufficient gas, or token contract issues. Try increasing slippage (2-5%), raising gas limit, or checking for transfer taxes. Failed transactions still consume gas.
Uniswap vs PancakeSwap?
Uniswap runs mainly on Ethereum and L2s; PancakeSwap runs on BNB Chain. Both use AMM. PancakeSwap has lower gas. Choose based on which chain your tokens are on.
Is trading on Uniswap safe?
The Uniswap protocol has been audited multiple times. However, anyone can list tokens on a DEX, so scam tokens exist. Always verify contract addresses.
Does Uniswap require KYC?
No. Uniswap is a decentralized protocol requiring no registration or KYC. Just connect your wallet. This also means there's no customer support to recover stolen assets.