Crypto Address Validator for EVM & Solana

Check EVM address syntax and EIP-55 checksum state or decode a Solana Base58 public-key value locally.

No RPC and no wallet connection

The address stays in this browser. The tool does not query chain state, balances, ownership, reputation, or scam databases.

EVM address

Solana address

EVM address

Syntax validation, not a reputation check

For EVM values, the tool checks the 20-byte hexadecimal form and distinguishes valid EIP-55 mixed-case checksums from lowercase or uppercase non-checksummed forms. For Solana, it decodes Base58 and checks for the 32-byte public-key length.

Web3 inspection guides

How to Read EIP-712 Typed Data Before You Sign How to Decode EVM Calldata and Spot Token Approvals How Solana Transactions Are Structured: Legacy vs Versioned

How to validate a wallet address

Choose the EVM or Solana tab.
Paste the public address and run the local syntax check.
Review checksum or byte-length details without treating them as proof of ownership or safety.

What a valid address cannot prove

Valid syntax does not prove that an account exists, belongs to the intended person, has a balance, is reputable, or is safe to transact with. This tool makes no network request and cannot inspect current chain state.

Related Web3 tools

Ethereum Unit Converter Base58 Encoder / Decoder

Frequently asked questions

Is a lowercase Ethereum address valid?: A 40-character lowercase hexadecimal address has valid syntax but does not carry an EIP-55 mixed-case checksum.
What does an invalid mixed-case checksum mean?: The capitalization does not match the EIP-55 checksum calculated for those address bytes, so the value should be corrected before use.
Is every 32-byte Base58 value an active Solana account?: No. It has the public-key length, but only chain state can show whether an account currently exists.
Does this tool detect scam addresses?: No. It validates deterministic syntax only and does not query reputation services or transaction history.

Frequently asked questions

Is a lowercase Ethereum address valid?

A 40-character lowercase hexadecimal address has valid syntax but does not carry an EIP-55 mixed-case checksum.

What does an invalid mixed-case checksum mean?

The capitalization does not match the EIP-55 checksum calculated for those address bytes, so the value should be corrected before use.

Is every 32-byte Base58 value an active Solana account?

No. It has the public-key length, but only chain state can show whether an account currently exists.

Does this tool detect scam addresses?

No. It validates deterministic syntax only and does not query reputation services or transaction history.