Gas Estimator

Estimate Ethereum transaction cost in USD from gas limit, gas price, and current ETH price.

Transaction Parameters

Gas Limit

Units of gas allocated for the transaction

Gas Price (Gwei)

Price per unit of gas in gwei

ETH Price (USD)

Current market price of 1 ETH in US dollars

Estimated Cost

Cost in ETH

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Cost in Gwei

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Cost in USD

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Gas Used (wei)	—
Formula	—

Quick Presets

How It Works

Every Ethereum transaction requires gas to execute. The total transaction fee is calculated as:

Transaction Fee = Gas Limit × Gas Price

The gas limit defines how many units of gas the transaction is allowed to consume. The gas price (in gwei) is how much you pay per unit of gas. One gwei equals 10^-9 ETH.

To convert the fee to USD, multiply the ETH cost by the current market price of ETH:

USD Cost = (Gas Limit × Gas Price × 10^-9) × ETH Price

Common Gas Limits

Transaction Type	Typical Gas Limit	Description
ETH Transfer	21,000	Simple ether send between wallets
ERC-20 Transfer	65,000	Sending tokens like USDT, USDC, DAI
ERC-20 Approve	45,000	Approving a spender for token transfers
DEX Swap	150,000 – 300,000	Uniswap, SushiSwap, and similar DEXs
NFT Mint	250,000 – 500,000	Minting an NFT on ERC-721 / ERC-1155
Contract Deployment	1,000,000+	Deploying a new smart contract

Tips for Saving on Gas

Time your transactions — Gas prices are lower during off-peak hours (weekends, late nights UTC).
Use Layer 2 solutions — Arbitrum, Optimism, and Base offer significantly lower fees.
Batch transactions — Some protocols let you batch multiple operations into one transaction.
Set a max fee — Use EIP-1559 max fee to avoid overpaying during gas spikes.

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