EVM Tools
Optimism Developer Tools
The original Optimistic Rollup and home of the OP Stack. Our EVM tools handle Optimism contracts identically to Ethereum — same addresses, same ABI encoding, same Keccak-256 hashing.
Chain details
Chain ID
10Native token
Ether (ETH)Type
L2Gas
Gas ~20-100x cheaper than Ethereum L1
RPC endpoint
https://mainnet.optimism.ioBlock explorer
https://optimistic.etherscan.ioTools for Optimism
EVM Contract Reader
Call view functions on any contract via your own RPC
Vanity Address Generator
Generate custom addresses — same key works on every EVM chain
Keccak-256 Hasher
Hash with the exact algorithm used by the EVM
ABI Encoder & Decoder
Encode calldata for contract interactions
EVM Unit Converter
Convert between wei, gwei, and the native token
Address Checksum (EIP-55)
Validate and checksum addresses to catch typos
Function Selector Calculator
Compute 4-byte selectors for function signatures
Multi-Chain Wallet Generator
Generate keys and addresses from one mnemonic
ENS Namehash Calculator
Derive EIP-137 namehash values for ENS names
Solidity to Opcodes
Compile Solidity and inspect the EVM assembly
Popular tokens on Optimism
USDC
0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85OP
0x4200000000000000000000000000000000000042WETH
0x4200000000000000000000000000000000000006Other EVM chains
All tools work on every EVM chain — pick yours: