Gas Fee Estimatorv1.0.0

Blockchain transactions require gas fees paid to validators for processing. The fee depends on the network, transaction complexity, and current gas prices. Seven EVM-compatible networks and six transaction types are supported, with optional EIP-1559 fee modeling for networks that use it.

• Select a Network from the dropdown. Each network uses a different native token for gas payments (ETH for Ethereum, MATIC for Polygon, BNB for BNB Smart Chain, AVAX for Avalanche).
• Choose a Transaction Type to auto-fill the Gas Limit field. Basic transfers use 21,000 gas units, ERC-20 token transfers use approximately 65,000, token swaps use around 150,000, NFT mints use about 200,000, and contract deployments use roughly 500,000. Select "Custom Gas Limit" to enter any value manually.
• Set the Gas Price (Gwei) to the current network gas price. Check a block explorer or gas tracker for real-time values. One Gwei equals 0.000000001 of the native token.
• Pick a Priority Speed to adjust the gas price by a multiplier: Low applies 0.8x, Standard applies 1x, and Fast applies 1.5x. Higher priority increases the chance of faster confirmation.
• Click Calculate or wait for the automatic 500-millisecond debounce to see results. The output shows the total fee in the native token and its USD equivalent.
• Open Settings to adjust the Native Token Price (USD) for accurate dollar conversion. Enable Use EIP-1559 Fee Model to split the fee into a base fee and a priority fee. Enter the current Base Fee (Gwei) and Max Priority Fee (Gwei) when using EIP-1559 mode.
• Fractions (1/2), mixed numbers (3 1/4), and decimals all work in numeric fields. Commas and dollar signs are stripped automatically.
• Click Reset to restore all fields to their defaults and clear saved state.

Gas fee estimation helps with budgeting transactions, comparing networks, and timing operations for lower costs.

• DeFi Trading: Before executing a token swap on Ethereum at 45 Gwei, estimate whether the 150,000 gas units at current ETH prices make the trade profitable after fees.
• NFT Minting: Compare the cost of minting on Ethereum versus Polygon or Base. A 200,000 gas limit at 30 Gwei on Ethereum costs significantly more than the same operation on a Layer 2 network at 0.1 Gwei.
• Multi-chain Deployment: Deploying a smart contract across multiple chains requires budgeting 500,000 gas units per network. Estimate total deployment costs across Ethereum, Arbitrum, Optimism, and Base to allocate funds before starting.
• Wallet Budgeting: Determine how many basic transfers a wallet can afford by dividing available native token balance by the estimated per-transaction cost at current gas prices.
• EIP-1559 Analysis: Model how base fee spikes during network congestion affect total transaction costs. Set the base fee to 100 Gwei and priority fee to 3 Gwei to simulate peak conditions, then compare against calm periods at 15 Gwei base fee.
• Cross-chain Bridge Planning: Bridging assets from Ethereum to Arbitrum involves a transaction on each chain. Estimate both sides of the bridge cost to decide whether the fee savings on the destination chain justify the bridging expense.
• Gas Optimization: Compare custom gas limits for optimized contracts against standard estimates. A well-optimized ERC-20 transfer might use 45,000 gas instead of the standard 65,000, saving roughly 30 percent on fees.
• Batch Transaction Planning: Estimate the total cost of sending ERC-20 tokens to 50 recipients by multiplying the per-transfer fee estimate by the number of transactions, then compare against using a batch transfer contract with a single higher gas limit.