eth_estimateGas - Optimism RPC Method
Estimate gas required for transactions on Optimism. Essential for optimizing transaction costs for cross-chain DeFi, Superchain-interoperable dApps, and public goods funding recipients.
Estimates the gas necessary to execute a transaction on Optimism.
Why Optimism? Build on the heart of the Superchain powering 60%+ of Ethereum L2 transactions with $6B+ TVL with OP Stack modularity, Superchain interoperability, 17M+ daily transactions across 33 chains, and 20% of tokens for public goods.
Use Cases
The eth_estimateGas method is essential for:
- Transaction preparation - Set appropriate gas limits
- Cost estimation - Calculate transaction costs before sending
- Error detection - Identify reverts before spending gas
- DeFi operations - Estimate costs for cross-chain DeFi, Superchain-interoperable dApps, and public goods funding recipients
Code Examples
Error Handling
| Error Code | Message | Description |
|---|---|---|
| -32000 | Execution reverted | Transaction would fail |
| -32602 | Invalid params | Invalid transaction parameters |
Tip: If estimation fails, the transaction would likely revert if sent.
Related Methods
eth_gasPrice- Get current gas priceeth_sendRawTransaction- Send transaction
eth_getTransactionReceipt
Get transaction receipt with status and logs on Optimism. Essential for verifying transaction execution for cross-chain DeFi, Superchain-interoperable dApps, and public goods funding recipients.
eth_gasPrice
Get current gas price on Optimism. Essential for transaction cost estimation for cross-chain DeFi, Superchain-interoperable dApps, and public goods funding recipients.