ETH Address Checksum Validator
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What is this tool?
Ethereum address checksum validator verifies EIP-55 checksum compliance for ETH addresses. The EIP-55 checksum uses keccak256 hashing to encode case information in the address, making typos detectable. This tool validates address format and computes the correct checksummed version.
How to use
- 1
Enter address
Paste your Ethereum address starting with 0x.
- 2
Validate format
Check if the address meets the 42-character requirement.
- 3
View checksummed version
See the correctly checksummed address and comparison.
Frequently Asked Questions
Why does Ethereum use checksums?
EIP-55 checksums prevent sending funds to mistyped addresses by encoding validity in the letter case.
What is keccak256?
Keccak256 is the hash function used by Ethereum (slightly different from SHA-3). It's the basis for address checksums.
Does case matter for addresses?
For checksummed addresses, yes. For non-checksummed, noโcase doesn't change the actual address but loses validation.