EVM Tools
Katana Developer Tools
Katana is a yield-bearing L2 built on Tetsuo. Powered by Polygon and focused on DeFi liquidity. ETH held on Katana automatically earns yield.
Chain details
Chain ID
747474Native token
Ether (ETH)Type
L2Gas
Gas paid in ETH, yield-bearing L2
RPC endpoint
https://rpc.katana.tetsuo.ioBlock explorer
https://katanaexplorer.comTools for Katana
Every tool below works on Katana and every other EVM chain — read any Katana contract, decode Katana calldata before signing, or convert wei to ETH with exact math. All client-side — keys and payloads never upload.
EVM Contract Reader
Call view functions on any Katana contract via your own RPC
EVM Calldata Decoder
Decode Katana transaction input — function and arguments, before you sign
Transaction Decoder
Break out a signed Katana transaction: sender, gas, fees, calldata
ABI Encoder & Decoder
Encode calldata for Katana contract interactions
Function Selector Calculator
Compute 4-byte selectors for function signatures
EVM Unit Converter
Convert wei, gwei, and ETH with BigInt-exact math
Vanity Address Generator
Generate custom addresses — same key works on Katana and every EVM chain
Address Checksum (EIP-55)
Validate and checksum Katana addresses to catch typos
CREATE2 Address Calculator
Derive deterministic contract addresses before deploying to Katana
EIP-1967 Proxy Slot Checker
Read implementation and admin slots of Katana proxies
Storage Slot Calculator
Compute Solidity storage slots for Katana contract state probes
Uniswap Math Calculator
v2/v3/v4 pool math — amounts out, ticks, sqrtPrice
Uniswap v4 Hook Calculator
Map hook addresses to their permission flags
Keccak-256 Hasher
Hash with the exact algorithm used by the EVM
Multi-Chain Wallet Generator
Generate keys and Katana 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
Other EVM chains
All tools work on every EVM chain — pick yours: