Ethereum Address ValidatorValidate Ethereum addresses — 0x + 40 hex chars.
Ethereum Address Validator
Validate Ethereum addresses — 0x + 40 hex chars.
Enter
Paste address.
Validate
Check.
Result
Validity.
What Is Ethereum Address Validator?
Validates Ethereum addresses: 0x followed by 40 hex characters. Same format for all EVM chains and ERC-20 tokens. Format validation — full EIP-55 checksum requires Keccak-256.
Why Use Our Ethereum Address Validator?
- 0x + 40 hex
- All EVM chains
- Instant
- 100% client-side
Common Use Cases
Safety
Verify before sending.
Dev
dApp validation.
Contracts
Check params.
Support
Verify addresses.
Technical Guide
Regex: /^0x[0-9a-fA-F]{40}$/. EIP-55: Keccak-256 of lowercase address determines uppercase chars.
Tips & Best Practices
- 1Verify before sending
- 2Same on Polygon/BSC
- 30x required
- 4Format only
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Encoding & CryptoFrequently Asked Questions
QFree?
QBlockchain?
QEIP-55?
QERC-20?
QSafe?
About Ethereum Address Validator
Ethereum Address Validator is a free online tool from FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration required. No ads. Just fast, reliable tools.