Ethereum Address Checksum
Validate an Ethereum address and convert it to the EIP-55 checksummed format. Free, private, and entirely browser-based.
Checksummed address
0x52908400098527886E0F7030069857D2E4169EE7
EIP-55 encodes a checksum in letter casing to catch common typing errors. Always verify the destination independently before sending funds.
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Frequently asked questions
What is Ethereum Address Checksum?+
Validate a 20-byte Ethereum address and generate its EIP-55 mixed-case checksum.
How do I use Ethereum Address Checksum?+
Detects malformed addresses and incorrect mixed-case checksums. Converts lowercase or uppercase addresses to the canonical checksummed form. Uses Ethereum Keccak-256 locally in your browser. Always verify a destination independently before sending funds
Is Ethereum Address Checksum free?+
Yes, Ethereum Address Checksum is completely free. No account or sign-up required, and all processing happens in your browser — nothing is sent to a server.
Is my data safe when I use Ethereum Address Checksum?+
Yes. Ethereum Address Checksum runs entirely in your browser using JavaScript and Web APIs — your input is never uploaded, transmitted, or stored on any server.