Bytecode Disassembler
EVM Bytecode Analysis Tool
Disassemble EVM bytecode into human-readable opcodes. Analyze deployed contracts, view stack operations, and understand gas costs per instruction.
Bytecode Input
What is Bytecode?
Bytecode is the low-level machine code executed by the Ethereum Virtual Machine (EVM). Every smart contract is compiled to bytecode before deployment. Disassembling bytecode helps you understand what a contract does, even without source code.
Understanding Opcodes
Opcodes are the fundamental instructions of the EVM. Each opcode performs a specific operation like arithmetic, storage access, or control flow. The gas cost varies by operation complexity and resource usage.
Gas Estimation
The estimated gas shown is the sum of base costs for each opcode. Actual execution costs depend on state changes, memory expansion, and storage operations. This tool provides a baseline estimate.